Fix image billing size normalization

backend/ent/migrate/schema.go

@@ -1318,6 +1318,10 @@ var (
 		{Name: "ip_address", Type: field.TypeString, Nullable: true, Size: 45},
 		{Name: "image_count", Type: field.TypeInt, Default: 0},
 		{Name: "image_size", Type: field.TypeString, Nullable: true, Size: 10},
+		{Name: "image_input_size", Type: field.TypeString, Nullable: true, Size: 32},
+		{Name: "image_output_size", Type: field.TypeString, Nullable: true, Size: 32},
+		{Name: "image_size_source", Type: field.TypeString, Nullable: true, Size: 16},
+		{Name: "image_size_breakdown", Type: field.TypeJSON, Nullable: true, SchemaType: map[string]string{"postgres": "jsonb"}},
 		{Name: "cache_ttl_overridden", Type: field.TypeBool, Default: false},
 		{Name: "created_at", Type: field.TypeTime, SchemaType: map[string]string{"postgres": "timestamptz"}},
 		{Name: "api_key_id", Type: field.TypeInt64},
@@ -1334,31 +1338,31 @@ var (
 		ForeignKeys: []*schema.ForeignKey{
 			{
 				Symbol:     "usage_logs_api_keys_usage_logs",
-				Columns:    []*schema.Column{UsageLogsColumns[33]},
+				Columns:    []*schema.Column{UsageLogsColumns[37]},
 				RefColumns: []*schema.Column{APIKeysColumns[0]},
 				OnDelete:   schema.NoAction,
 			},
 			{
 				Symbol:     "usage_logs_accounts_usage_logs",
-				Columns:    []*schema.Column{UsageLogsColumns[34]},
+				Columns:    []*schema.Column{UsageLogsColumns[38]},
 				RefColumns: []*schema.Column{AccountsColumns[0]},
 				OnDelete:   schema.NoAction,
 			},
 			{
 				Symbol:     "usage_logs_groups_usage_logs",
-				Columns:    []*schema.Column{UsageLogsColumns[35]},
+				Columns:    []*schema.Column{UsageLogsColumns[39]},
 				RefColumns: []*schema.Column{GroupsColumns[0]},
 				OnDelete:   schema.SetNull,
 			},
 			{
 				Symbol:     "usage_logs_users_usage_logs",
-				Columns:    []*schema.Column{UsageLogsColumns[36]},
+				Columns:    []*schema.Column{UsageLogsColumns[40]},
 				RefColumns: []*schema.Column{UsersColumns[0]},
 				OnDelete:   schema.NoAction,
 			},
 			{
 				Symbol:     "usage_logs_user_subscriptions_usage_logs",
-				Columns:    []*schema.Column{UsageLogsColumns[37]},
+				Columns:    []*schema.Column{UsageLogsColumns[41]},
 				RefColumns: []*schema.Column{UserSubscriptionsColumns[0]},
 				OnDelete:   schema.SetNull,
 			},
@@ -1367,32 +1371,32 @@ var (
 			{
 				Name:    "usagelog_user_id",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[36]},
+				Columns: []*schema.Column{UsageLogsColumns[40]},
 			},
 			{
 				Name:    "usagelog_api_key_id",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[33]},
+				Columns: []*schema.Column{UsageLogsColumns[37]},
 			},
 			{
 				Name:    "usagelog_account_id",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[34]},
+				Columns: []*schema.Column{UsageLogsColumns[38]},
 			},
 			{
 				Name:    "usagelog_group_id",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[35]},
+				Columns: []*schema.Column{UsageLogsColumns[39]},
 			},
 			{
 				Name:    "usagelog_subscription_id",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[37]},
+				Columns: []*schema.Column{UsageLogsColumns[41]},
 			},
 			{
 				Name:    "usagelog_created_at",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[32]},
+				Columns: []*schema.Column{UsageLogsColumns[36]},
 			},
 			{
 				Name:    "usagelog_model",
@@ -1412,17 +1416,17 @@ var (
 			{
 				Name:    "usagelog_user_id_created_at",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[36], UsageLogsColumns[32]},
+				Columns: []*schema.Column{UsageLogsColumns[40], UsageLogsColumns[36]},
 			},
 			{
 				Name:    "usagelog_api_key_id_created_at",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[33], UsageLogsColumns[32]},
+				Columns: []*schema.Column{UsageLogsColumns[37], UsageLogsColumns[36]},
 			},
 			{
 				Name:    "usagelog_group_id_created_at",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[35], UsageLogsColumns[32]},
+				Columns: []*schema.Column{UsageLogsColumns[39], UsageLogsColumns[36]},
 			},
 		},
 	}

backend/ent/mutation.go

@@ -34260,6 +34260,10 @@ type UsageLogMutation struct {
 	image_count                 *int
 	addimage_count              *int
 	image_size                  *string
+	image_input_size            *string
+	image_output_size           *string
+	image_size_source           *string
+	image_size_breakdown        *map[string]int
 	cache_ttl_overridden        *bool
 	created_at                  *time.Time
 	clearedFields               map[string]struct{}
@@ -36202,6 +36206,202 @@ func (m *UsageLogMutation) ResetImageSize() {
 	delete(m.clearedFields, usagelog.FieldImageSize)
 }
 
+// SetImageInputSize sets the "image_input_size" field.
+func (m *UsageLogMutation) SetImageInputSize(s string) {
+	m.image_input_size = &s
+}
+
+// ImageInputSize returns the value of the "image_input_size" field in the mutation.
+func (m *UsageLogMutation) ImageInputSize() (r string, exists bool) {
+	v := m.image_input_size
+	if v == nil {
+		return
+	}
+	return *v, true
+}
+
+// OldImageInputSize returns the old "image_input_size" field's value of the UsageLog entity.
+// If the UsageLog object wasn't provided to the builder, the object is fetched from the database.
+// An error is returned if the mutation operation is not UpdateOne, or the database query fails.
+func (m *UsageLogMutation) OldImageInputSize(ctx context.Context) (v *string, err error) {
+	if !m.op.Is(OpUpdateOne) {
+		return v, errors.New("OldImageInputSize is only allowed on UpdateOne operations")
+	}
+	if m.id == nil || m.oldValue == nil {
+		return v, errors.New("OldImageInputSize requires an ID field in the mutation")
+	}
+	oldValue, err := m.oldValue(ctx)
+	if err != nil {
+		return v, fmt.Errorf("querying old value for OldImageInputSize: %w", err)
+	}
+	return oldValue.ImageInputSize, nil
+}
+
+// ClearImageInputSize clears the value of the "image_input_size" field.
+func (m *UsageLogMutation) ClearImageInputSize() {
+	m.image_input_size = nil
+	m.clearedFields[usagelog.FieldImageInputSize] = struct{}{}
+}
+
+// ImageInputSizeCleared returns if the "image_input_size" field was cleared in this mutation.
+func (m *UsageLogMutation) ImageInputSizeCleared() bool {
+	_, ok := m.clearedFields[usagelog.FieldImageInputSize]
+	return ok
+}
+
+// ResetImageInputSize resets all changes to the "image_input_size" field.
+func (m *UsageLogMutation) ResetImageInputSize() {
+	m.image_input_size = nil
+	delete(m.clearedFields, usagelog.FieldImageInputSize)
+}
+
+// SetImageOutputSize sets the "image_output_size" field.
+func (m *UsageLogMutation) SetImageOutputSize(s string) {
+	m.image_output_size = &s
+}
+
+// ImageOutputSize returns the value of the "image_output_size" field in the mutation.
+func (m *UsageLogMutation) ImageOutputSize() (r string, exists bool) {
+	v := m.image_output_size
+	if v == nil {
+		return
+	}
+	return *v, true
+}
+
+// OldImageOutputSize returns the old "image_output_size" field's value of the UsageLog entity.
+// If the UsageLog object wasn't provided to the builder, the object is fetched from the database.
+// An error is returned if the mutation operation is not UpdateOne, or the database query fails.
+func (m *UsageLogMutation) OldImageOutputSize(ctx context.Context) (v *string, err error) {
+	if !m.op.Is(OpUpdateOne) {
+		return v, errors.New("OldImageOutputSize is only allowed on UpdateOne operations")
+	}
+	if m.id == nil || m.oldValue == nil {
+		return v, errors.New("OldImageOutputSize requires an ID field in the mutation")
+	}
+	oldValue, err := m.oldValue(ctx)
+	if err != nil {
+		return v, fmt.Errorf("querying old value for OldImageOutputSize: %w", err)
+	}
+	return oldValue.ImageOutputSize, nil
+}
+
+// ClearImageOutputSize clears the value of the "image_output_size" field.
+func (m *UsageLogMutation) ClearImageOutputSize() {
+	m.image_output_size = nil
+	m.clearedFields[usagelog.FieldImageOutputSize] = struct{}{}
+}
+
+// ImageOutputSizeCleared returns if the "image_output_size" field was cleared in this mutation.
+func (m *UsageLogMutation) ImageOutputSizeCleared() bool {
+	_, ok := m.clearedFields[usagelog.FieldImageOutputSize]
+	return ok
+}
+
+// ResetImageOutputSize resets all changes to the "image_output_size" field.
+func (m *UsageLogMutation) ResetImageOutputSize() {
+	m.image_output_size = nil
+	delete(m.clearedFields, usagelog.FieldImageOutputSize)
+}
+
+// SetImageSizeSource sets the "image_size_source" field.
+func (m *UsageLogMutation) SetImageSizeSource(s string) {
+	m.image_size_source = &s
+}
+
+// ImageSizeSource returns the value of the "image_size_source" field in the mutation.
+func (m *UsageLogMutation) ImageSizeSource() (r string, exists bool) {
+	v := m.image_size_source
+	if v == nil {
+		return
+	}
+	return *v, true
+}
+
+// OldImageSizeSource returns the old "image_size_source" field's value of the UsageLog entity.
+// If the UsageLog object wasn't provided to the builder, the object is fetched from the database.
+// An error is returned if the mutation operation is not UpdateOne, or the database query fails.
+func (m *UsageLogMutation) OldImageSizeSource(ctx context.Context) (v *string, err error) {
+	if !m.op.Is(OpUpdateOne) {
+		return v, errors.New("OldImageSizeSource is only allowed on UpdateOne operations")
+	}
+	if m.id == nil || m.oldValue == nil {
+		return v, errors.New("OldImageSizeSource requires an ID field in the mutation")
+	}
+	oldValue, err := m.oldValue(ctx)
+	if err != nil {
+		return v, fmt.Errorf("querying old value for OldImageSizeSource: %w", err)
+	}
+	return oldValue.ImageSizeSource, nil
+}
+
+// ClearImageSizeSource clears the value of the "image_size_source" field.
+func (m *UsageLogMutation) ClearImageSizeSource() {
+	m.image_size_source = nil
+	m.clearedFields[usagelog.FieldImageSizeSource] = struct{}{}
+}
+
+// ImageSizeSourceCleared returns if the "image_size_source" field was cleared in this mutation.
+func (m *UsageLogMutation) ImageSizeSourceCleared() bool {
+	_, ok := m.clearedFields[usagelog.FieldImageSizeSource]
+	return ok
+}
+
+// ResetImageSizeSource resets all changes to the "image_size_source" field.
+func (m *UsageLogMutation) ResetImageSizeSource() {
+	m.image_size_source = nil
+	delete(m.clearedFields, usagelog.FieldImageSizeSource)
+}
+
+// SetImageSizeBreakdown sets the "image_size_breakdown" field.
+func (m *UsageLogMutation) SetImageSizeBreakdown(value map[string]int) {
+	m.image_size_breakdown = &value
+}
+
+// ImageSizeBreakdown returns the value of the "image_size_breakdown" field in the mutation.
+func (m *UsageLogMutation) ImageSizeBreakdown() (r map[string]int, exists bool) {
+	v := m.image_size_breakdown
+	if v == nil {
+		return
+	}
+	return *v, true
+}
+
+// OldImageSizeBreakdown returns the old "image_size_breakdown" field's value of the UsageLog entity.
+// If the UsageLog object wasn't provided to the builder, the object is fetched from the database.
+// An error is returned if the mutation operation is not UpdateOne, or the database query fails.
+func (m *UsageLogMutation) OldImageSizeBreakdown(ctx context.Context) (v map[string]int, err error) {
+	if !m.op.Is(OpUpdateOne) {
+		return v, errors.New("OldImageSizeBreakdown is only allowed on UpdateOne operations")
+	}
+	if m.id == nil || m.oldValue == nil {
+		return v, errors.New("OldImageSizeBreakdown requires an ID field in the mutation")
+	}
+	oldValue, err := m.oldValue(ctx)
+	if err != nil {
+		return v, fmt.Errorf("querying old value for OldImageSizeBreakdown: %w", err)
+	}
+	return oldValue.ImageSizeBreakdown, nil
+}
+
+// ClearImageSizeBreakdown clears the value of the "image_size_breakdown" field.
+func (m *UsageLogMutation) ClearImageSizeBreakdown() {
+	m.image_size_breakdown = nil
+	m.clearedFields[usagelog.FieldImageSizeBreakdown] = struct{}{}
+}
+
+// ImageSizeBreakdownCleared returns if the "image_size_breakdown" field was cleared in this mutation.
+func (m *UsageLogMutation) ImageSizeBreakdownCleared() bool {
+	_, ok := m.clearedFields[usagelog.FieldImageSizeBreakdown]
+	return ok
+}
+
+// ResetImageSizeBreakdown resets all changes to the "image_size_breakdown" field.
+func (m *UsageLogMutation) ResetImageSizeBreakdown() {
+	m.image_size_breakdown = nil
+	delete(m.clearedFields, usagelog.FieldImageSizeBreakdown)
+}
+
 // SetCacheTTLOverridden sets the "cache_ttl_overridden" field.
 func (m *UsageLogMutation) SetCacheTTLOverridden(b bool) {
 	m.cache_ttl_overridden = &b
@@ -36443,7 +36643,7 @@ func (m *UsageLogMutation) Type() string {
 // order to get all numeric fields that were incremented/decremented, call
 // AddedFields().
 func (m *UsageLogMutation) Fields() []string {
-	fields := make([]string, 0, 37)
+	fields := make([]string, 0, 41)
 	if m.user != nil {
 		fields = append(fields, usagelog.FieldUserID)
 	}
@@ -36549,6 +36749,18 @@ func (m *UsageLogMutation) Fields() []string {
 	if m.image_size != nil {
 		fields = append(fields, usagelog.FieldImageSize)
 	}
+	if m.image_input_size != nil {
+		fields = append(fields, usagelog.FieldImageInputSize)
+	}
+	if m.image_output_size != nil {
+		fields = append(fields, usagelog.FieldImageOutputSize)
+	}
+	if m.image_size_source != nil {
+		fields = append(fields, usagelog.FieldImageSizeSource)
+	}
+	if m.image_size_breakdown != nil {
+		fields = append(fields, usagelog.FieldImageSizeBreakdown)
+	}
 	if m.cache_ttl_overridden != nil {
 		fields = append(fields, usagelog.FieldCacheTTLOverridden)
 	}
@@ -36633,6 +36845,14 @@ func (m *UsageLogMutation) Field(name string) (ent.Value, bool) {
 		return m.ImageCount()
 	case usagelog.FieldImageSize:
 		return m.ImageSize()
+	case usagelog.FieldImageInputSize:
+		return m.ImageInputSize()
+	case usagelog.FieldImageOutputSize:
+		return m.ImageOutputSize()
+	case usagelog.FieldImageSizeSource:
+		return m.ImageSizeSource()
+	case usagelog.FieldImageSizeBreakdown:
+		return m.ImageSizeBreakdown()
 	case usagelog.FieldCacheTTLOverridden:
 		return m.CacheTTLOverridden()
 	case usagelog.FieldCreatedAt:
@@ -36716,6 +36936,14 @@ func (m *UsageLogMutation) OldField(ctx context.Context, name string) (ent.Value
 		return m.OldImageCount(ctx)
 	case usagelog.FieldImageSize:
 		return m.OldImageSize(ctx)
+	case usagelog.FieldImageInputSize:
+		return m.OldImageInputSize(ctx)
+	case usagelog.FieldImageOutputSize:
+		return m.OldImageOutputSize(ctx)
+	case usagelog.FieldImageSizeSource:
+		return m.OldImageSizeSource(ctx)
+	case usagelog.FieldImageSizeBreakdown:
+		return m.OldImageSizeBreakdown(ctx)
 	case usagelog.FieldCacheTTLOverridden:
 		return m.OldCacheTTLOverridden(ctx)
 	case usagelog.FieldCreatedAt:
@@ -36974,6 +37202,34 @@ func (m *UsageLogMutation) SetField(name string, value ent.Value) error {
 		}
 		m.SetImageSize(v)
 		return nil
+	case usagelog.FieldImageInputSize:
+		v, ok := value.(string)
+		if !ok {
+			return fmt.Errorf("unexpected type %T for field %s", value, name)
+		}
+		m.SetImageInputSize(v)
+		return nil
+	case usagelog.FieldImageOutputSize:
+		v, ok := value.(string)
+		if !ok {
+			return fmt.Errorf("unexpected type %T for field %s", value, name)
+		}
+		m.SetImageOutputSize(v)
+		return nil
+	case usagelog.FieldImageSizeSource:
+		v, ok := value.(string)
+		if !ok {
+			return fmt.Errorf("unexpected type %T for field %s", value, name)
+		}
+		m.SetImageSizeSource(v)
+		return nil
+	case usagelog.FieldImageSizeBreakdown:
+		v, ok := value.(map[string]int)
+		if !ok {
+			return fmt.Errorf("unexpected type %T for field %s", value, name)
+		}
+		m.SetImageSizeBreakdown(v)
+		return nil
 	case usagelog.FieldCacheTTLOverridden:
 		v, ok := value.(bool)
 		if !ok {
@@ -37291,6 +37547,18 @@ func (m *UsageLogMutation) ClearedFields() []string {
 	if m.FieldCleared(usagelog.FieldImageSize) {
 		fields = append(fields, usagelog.FieldImageSize)
 	}
+	if m.FieldCleared(usagelog.FieldImageInputSize) {
+		fields = append(fields, usagelog.FieldImageInputSize)
+	}
+	if m.FieldCleared(usagelog.FieldImageOutputSize) {
+		fields = append(fields, usagelog.FieldImageOutputSize)
+	}
+	if m.FieldCleared(usagelog.FieldImageSizeSource) {
+		fields = append(fields, usagelog.FieldImageSizeSource)
+	}
+	if m.FieldCleared(usagelog.FieldImageSizeBreakdown) {
+		fields = append(fields, usagelog.FieldImageSizeBreakdown)
+	}
 	return fields
 }
 
@@ -37347,6 +37615,18 @@ func (m *UsageLogMutation) ClearField(name string) error {
 	case usagelog.FieldImageSize:
 		m.ClearImageSize()
 		return nil
+	case usagelog.FieldImageInputSize:
+		m.ClearImageInputSize()
+		return nil
+	case usagelog.FieldImageOutputSize:
+		m.ClearImageOutputSize()
+		return nil
+	case usagelog.FieldImageSizeSource:
+		m.ClearImageSizeSource()
+		return nil
+	case usagelog.FieldImageSizeBreakdown:
+		m.ClearImageSizeBreakdown()
+		return nil
 	}
 	return fmt.Errorf("unknown UsageLog nullable field %s", name)
 }
@@ -37460,6 +37740,18 @@ func (m *UsageLogMutation) ResetField(name string) error {
 	case usagelog.FieldImageSize:
 		m.ResetImageSize()
 		return nil
+	case usagelog.FieldImageInputSize:
+		m.ResetImageInputSize()
+		return nil
+	case usagelog.FieldImageOutputSize:
+		m.ResetImageOutputSize()
+		return nil
+	case usagelog.FieldImageSizeSource:
+		m.ResetImageSizeSource()
+		return nil
+	case usagelog.FieldImageSizeBreakdown:
+		m.ResetImageSizeBreakdown()
+		return nil
 	case usagelog.FieldCacheTTLOverridden:
 		m.ResetCacheTTLOverridden()
 		return nil

backend/ent/runtime/runtime.go

@@ -1722,12 +1722,24 @@ func init() {
 	usagelogDescImageSize := usagelogFields[34].Descriptor()
 	// usagelog.ImageSizeValidator is a validator for the "image_size" field. It is called by the builders before save.
 	usagelog.ImageSizeValidator = usagelogDescImageSize.Validators[0].(func(string) error)
+	// usagelogDescImageInputSize is the schema descriptor for image_input_size field.
+	usagelogDescImageInputSize := usagelogFields[35].Descriptor()
+	// usagelog.ImageInputSizeValidator is a validator for the "image_input_size" field. It is called by the builders before save.
+	usagelog.ImageInputSizeValidator = usagelogDescImageInputSize.Validators[0].(func(string) error)
+	// usagelogDescImageOutputSize is the schema descriptor for image_output_size field.
+	usagelogDescImageOutputSize := usagelogFields[36].Descriptor()
+	// usagelog.ImageOutputSizeValidator is a validator for the "image_output_size" field. It is called by the builders before save.
+	usagelog.ImageOutputSizeValidator = usagelogDescImageOutputSize.Validators[0].(func(string) error)
+	// usagelogDescImageSizeSource is the schema descriptor for image_size_source field.
+	usagelogDescImageSizeSource := usagelogFields[37].Descriptor()
+	// usagelog.ImageSizeSourceValidator is a validator for the "image_size_source" field. It is called by the builders before save.
+	usagelog.ImageSizeSourceValidator = usagelogDescImageSizeSource.Validators[0].(func(string) error)
 	// usagelogDescCacheTTLOverridden is the schema descriptor for cache_ttl_overridden field.
-	usagelogDescCacheTTLOverridden := usagelogFields[35].Descriptor()
+	usagelogDescCacheTTLOverridden := usagelogFields[39].Descriptor()
 	// usagelog.DefaultCacheTTLOverridden holds the default value on creation for the cache_ttl_overridden field.
 	usagelog.DefaultCacheTTLOverridden = usagelogDescCacheTTLOverridden.Default.(bool)
 	// usagelogDescCreatedAt is the schema descriptor for created_at field.
-	usagelogDescCreatedAt := usagelogFields[36].Descriptor()
+	usagelogDescCreatedAt := usagelogFields[40].Descriptor()
 	// usagelog.DefaultCreatedAt holds the default value on creation for the created_at field.
 	usagelog.DefaultCreatedAt = usagelogDescCreatedAt.Default.(func() time.Time)
 	userMixin := schema.User{}.Mixin()

backend/ent/schema/usage_log.go

@@ -134,6 +134,21 @@ func (UsageLog) Fields() []ent.Field {
 			MaxLen(10).
 			Optional().
 			Nillable(),
+		field.String("image_input_size").
+			MaxLen(32).
+			Optional().
+			Nillable(),
+		field.String("image_output_size").
+			MaxLen(32).
+			Optional().
+			Nillable(),
+		field.String("image_size_source").
+			MaxLen(16).
+			Optional().
+			Nillable(),
+		field.JSON("image_size_breakdown", map[string]int{}).
+			Optional().
+			SchemaType(map[string]string{dialect.Postgres: "jsonb"}),
 		// Cache TTL Override 标记（管理员强制替换了缓存 TTL 计费）
 		field.Bool("cache_ttl_overridden").
 			Default(false),

backend/ent/usagelog.go

@@ -3,6 +3,7 @@
 package ent
 
 import (
+	"encoding/json"
 	"fmt"
 	"strings"
 	"time"
@@ -92,6 +93,14 @@ type UsageLog struct {
 	ImageCount int `json:"image_count,omitempty"`
 	// ImageSize holds the value of the "image_size" field.
 	ImageSize *string `json:"image_size,omitempty"`
+	// ImageInputSize holds the value of the "image_input_size" field.
+	ImageInputSize *string `json:"image_input_size,omitempty"`
+	// ImageOutputSize holds the value of the "image_output_size" field.
+	ImageOutputSize *string `json:"image_output_size,omitempty"`
+	// ImageSizeSource holds the value of the "image_size_source" field.
+	ImageSizeSource *string `json:"image_size_source,omitempty"`
+	// ImageSizeBreakdown holds the value of the "image_size_breakdown" field.
+	ImageSizeBreakdown map[string]int `json:"image_size_breakdown,omitempty"`
 	// CacheTTLOverridden holds the value of the "cache_ttl_overridden" field.
 	CacheTTLOverridden bool `json:"cache_ttl_overridden,omitempty"`
 	// CreatedAt holds the value of the "created_at" field.
@@ -179,13 +188,15 @@ func (*UsageLog) scanValues(columns []string) ([]any, error) {
 	values := make([]any, len(columns))
 	for i := range columns {
 		switch columns[i] {
+		case usagelog.FieldImageSizeBreakdown:
+			values[i] = new([]byte)
 		case usagelog.FieldStream, usagelog.FieldCacheTTLOverridden:
 			values[i] = new(sql.NullBool)
 		case usagelog.FieldInputCost, usagelog.FieldOutputCost, usagelog.FieldCacheCreationCost, usagelog.FieldCacheReadCost, usagelog.FieldTotalCost, usagelog.FieldActualCost, usagelog.FieldRateMultiplier, usagelog.FieldAccountRateMultiplier:
 			values[i] = new(sql.NullFloat64)
 		case usagelog.FieldID, usagelog.FieldUserID, usagelog.FieldAPIKeyID, usagelog.FieldAccountID, usagelog.FieldChannelID, usagelog.FieldGroupID, usagelog.FieldSubscriptionID, usagelog.FieldInputTokens, usagelog.FieldOutputTokens, usagelog.FieldCacheCreationTokens, usagelog.FieldCacheReadTokens, usagelog.FieldCacheCreation5mTokens, usagelog.FieldCacheCreation1hTokens, usagelog.FieldBillingType, usagelog.FieldDurationMs, usagelog.FieldFirstTokenMs, usagelog.FieldImageCount:
 			values[i] = new(sql.NullInt64)
-		case usagelog.FieldRequestID, usagelog.FieldModel, usagelog.FieldRequestedModel, usagelog.FieldUpstreamModel, usagelog.FieldModelMappingChain, usagelog.FieldBillingTier, usagelog.FieldBillingMode, usagelog.FieldUserAgent, usagelog.FieldIPAddress, usagelog.FieldImageSize:
+		case usagelog.FieldRequestID, usagelog.FieldModel, usagelog.FieldRequestedModel, usagelog.FieldUpstreamModel, usagelog.FieldModelMappingChain, usagelog.FieldBillingTier, usagelog.FieldBillingMode, usagelog.FieldUserAgent, usagelog.FieldIPAddress, usagelog.FieldImageSize, usagelog.FieldImageInputSize, usagelog.FieldImageOutputSize, usagelog.FieldImageSizeSource:
 			values[i] = new(sql.NullString)
 		case usagelog.FieldCreatedAt:
 			values[i] = new(sql.NullTime)
@@ -434,6 +445,35 @@ func (_m *UsageLog) assignValues(columns []string, values []any) error {
 				_m.ImageSize = new(string)
 				*_m.ImageSize = value.String
 			}
+		case usagelog.FieldImageInputSize:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field image_input_size", values[i])
+			} else if value.Valid {
+				_m.ImageInputSize = new(string)
+				*_m.ImageInputSize = value.String
+			}
+		case usagelog.FieldImageOutputSize:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field image_output_size", values[i])
+			} else if value.Valid {
+				_m.ImageOutputSize = new(string)
+				*_m.ImageOutputSize = value.String
+			}
+		case usagelog.FieldImageSizeSource:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field image_size_source", values[i])
+			} else if value.Valid {
+				_m.ImageSizeSource = new(string)
+				*_m.ImageSizeSource = value.String
+			}
+		case usagelog.FieldImageSizeBreakdown:
+			if value, ok := values[i].(*[]byte); !ok {
+				return fmt.Errorf("unexpected type %T for field image_size_breakdown", values[i])
+			} else if value != nil && len(*value) > 0 {
+				if err := json.Unmarshal(*value, &_m.ImageSizeBreakdown); err != nil {
+					return fmt.Errorf("unmarshal field image_size_breakdown: %w", err)
+				}
+			}
 		case usagelog.FieldCacheTTLOverridden:
 			if value, ok := values[i].(*sql.NullBool); !ok {
 				return fmt.Errorf("unexpected type %T for field cache_ttl_overridden", values[i])
@@ -640,6 +680,24 @@ func (_m *UsageLog) String() string {
 		builder.WriteString(*v)
 	}
 	builder.WriteString(", ")
+	if v := _m.ImageInputSize; v != nil {
+		builder.WriteString("image_input_size=")
+		builder.WriteString(*v)
+	}
+	builder.WriteString(", ")
+	if v := _m.ImageOutputSize; v != nil {
+		builder.WriteString("image_output_size=")
+		builder.WriteString(*v)
+	}
+	builder.WriteString(", ")
+	if v := _m.ImageSizeSource; v != nil {
+		builder.WriteString("image_size_source=")
+		builder.WriteString(*v)
+	}
+	builder.WriteString(", ")
+	builder.WriteString("image_size_breakdown=")
+	builder.WriteString(fmt.Sprintf("%v", _m.ImageSizeBreakdown))
+	builder.WriteString(", ")
 	builder.WriteString("cache_ttl_overridden=")
 	builder.WriteString(fmt.Sprintf("%v", _m.CacheTTLOverridden))
 	builder.WriteString(", ")

backend/ent/usagelog/usagelog.go

@@ -84,6 +84,14 @@ const (
 	FieldImageCount = "image_count"
 	// FieldImageSize holds the string denoting the image_size field in the database.
 	FieldImageSize = "image_size"
+	// FieldImageInputSize holds the string denoting the image_input_size field in the database.
+	FieldImageInputSize = "image_input_size"
+	// FieldImageOutputSize holds the string denoting the image_output_size field in the database.
+	FieldImageOutputSize = "image_output_size"
+	// FieldImageSizeSource holds the string denoting the image_size_source field in the database.
+	FieldImageSizeSource = "image_size_source"
+	// FieldImageSizeBreakdown holds the string denoting the image_size_breakdown field in the database.
+	FieldImageSizeBreakdown = "image_size_breakdown"
 	// FieldCacheTTLOverridden holds the string denoting the cache_ttl_overridden field in the database.
 	FieldCacheTTLOverridden = "cache_ttl_overridden"
 	// FieldCreatedAt holds the string denoting the created_at field in the database.
@@ -175,6 +183,10 @@ var Columns = []string{
 	FieldIPAddress,
 	FieldImageCount,
 	FieldImageSize,
+	FieldImageInputSize,
+	FieldImageOutputSize,
+	FieldImageSizeSource,
+	FieldImageSizeBreakdown,
 	FieldCacheTTLOverridden,
 	FieldCreatedAt,
 }
@@ -242,6 +254,12 @@ var (
 	DefaultImageCount int
 	// ImageSizeValidator is a validator for the "image_size" field. It is called by the builders before save.
 	ImageSizeValidator func(string) error
+	// ImageInputSizeValidator is a validator for the "image_input_size" field. It is called by the builders before save.
+	ImageInputSizeValidator func(string) error
+	// ImageOutputSizeValidator is a validator for the "image_output_size" field. It is called by the builders before save.
+	ImageOutputSizeValidator func(string) error
+	// ImageSizeSourceValidator is a validator for the "image_size_source" field. It is called by the builders before save.
+	ImageSizeSourceValidator func(string) error
 	// DefaultCacheTTLOverridden holds the default value on creation for the "cache_ttl_overridden" field.
 	DefaultCacheTTLOverridden bool
 	// DefaultCreatedAt holds the default value on creation for the "created_at" field.
@@ -431,6 +449,21 @@ func ByImageSize(opts ...sql.OrderTermOption) OrderOption {
 	return sql.OrderByField(FieldImageSize, opts...).ToFunc()
 }
 
+// ByImageInputSize orders the results by the image_input_size field.
+func ByImageInputSize(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldImageInputSize, opts...).ToFunc()
+}
+
+// ByImageOutputSize orders the results by the image_output_size field.
+func ByImageOutputSize(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldImageOutputSize, opts...).ToFunc()
+}
+
+// ByImageSizeSource orders the results by the image_size_source field.
+func ByImageSizeSource(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldImageSizeSource, opts...).ToFunc()
+}
+
 // ByCacheTTLOverridden orders the results by the cache_ttl_overridden field.
 func ByCacheTTLOverridden(opts ...sql.OrderTermOption) OrderOption {
 	return sql.OrderByField(FieldCacheTTLOverridden, opts...).ToFunc()

backend/ent/usagelog/where.go

@@ -230,6 +230,21 @@ func ImageSize(v string) predicate.UsageLog {
 	return predicate.UsageLog(sql.FieldEQ(FieldImageSize, v))
 }
 
+// ImageInputSize applies equality check predicate on the "image_input_size" field. It's identical to ImageInputSizeEQ.
+func ImageInputSize(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldEQ(FieldImageInputSize, v))
+}
+
+// ImageOutputSize applies equality check predicate on the "image_output_size" field. It's identical to ImageOutputSizeEQ.
+func ImageOutputSize(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldEQ(FieldImageOutputSize, v))
+}
+
+// ImageSizeSource applies equality check predicate on the "image_size_source" field. It's identical to ImageSizeSourceEQ.
+func ImageSizeSource(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldEQ(FieldImageSizeSource, v))
+}
+
 // CacheTTLOverridden applies equality check predicate on the "cache_ttl_overridden" field. It's identical to CacheTTLOverriddenEQ.
 func CacheTTLOverridden(v bool) predicate.UsageLog {
 	return predicate.UsageLog(sql.FieldEQ(FieldCacheTTLOverridden, v))
@@ -1900,6 +1915,241 @@ func ImageSizeContainsFold(v string) predicate.UsageLog {
 	return predicate.UsageLog(sql.FieldContainsFold(FieldImageSize, v))
 }
 
+// ImageInputSizeEQ applies the EQ predicate on the "image_input_size" field.
+func ImageInputSizeEQ(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldEQ(FieldImageInputSize, v))
+}
+
+// ImageInputSizeNEQ applies the NEQ predicate on the "image_input_size" field.
+func ImageInputSizeNEQ(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldNEQ(FieldImageInputSize, v))
+}
+
+// ImageInputSizeIn applies the In predicate on the "image_input_size" field.
+func ImageInputSizeIn(vs ...string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldIn(FieldImageInputSize, vs...))
+}
+
+// ImageInputSizeNotIn applies the NotIn predicate on the "image_input_size" field.
+func ImageInputSizeNotIn(vs ...string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldNotIn(FieldImageInputSize, vs...))
+}
+
+// ImageInputSizeGT applies the GT predicate on the "image_input_size" field.
+func ImageInputSizeGT(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldGT(FieldImageInputSize, v))
+}
+
+// ImageInputSizeGTE applies the GTE predicate on the "image_input_size" field.
+func ImageInputSizeGTE(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldGTE(FieldImageInputSize, v))
+}
+
+// ImageInputSizeLT applies the LT predicate on the "image_input_size" field.
+func ImageInputSizeLT(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldLT(FieldImageInputSize, v))
+}
+
+// ImageInputSizeLTE applies the LTE predicate on the "image_input_size" field.
+func ImageInputSizeLTE(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldLTE(FieldImageInputSize, v))
+}
+
+// ImageInputSizeContains applies the Contains predicate on the "image_input_size" field.
+func ImageInputSizeContains(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldContains(FieldImageInputSize, v))
+}
+
+// ImageInputSizeHasPrefix applies the HasPrefix predicate on the "image_input_size" field.
+func ImageInputSizeHasPrefix(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldHasPrefix(FieldImageInputSize, v))
+}
+
+// ImageInputSizeHasSuffix applies the HasSuffix predicate on the "image_input_size" field.
+func ImageInputSizeHasSuffix(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldHasSuffix(FieldImageInputSize, v))
+}
+
+// ImageInputSizeIsNil applies the IsNil predicate on the "image_input_size" field.
+func ImageInputSizeIsNil() predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldIsNull(FieldImageInputSize))
+}
+
+// ImageInputSizeNotNil applies the NotNil predicate on the "image_input_size" field.
+func ImageInputSizeNotNil() predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldNotNull(FieldImageInputSize))
+}
+
+// ImageInputSizeEqualFold applies the EqualFold predicate on the "image_input_size" field.
+func ImageInputSizeEqualFold(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldEqualFold(FieldImageInputSize, v))
+}
+
+// ImageInputSizeContainsFold applies the ContainsFold predicate on the "image_input_size" field.
+func ImageInputSizeContainsFold(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldContainsFold(FieldImageInputSize, v))
+}
+
+// ImageOutputSizeEQ applies the EQ predicate on the "image_output_size" field.
+func ImageOutputSizeEQ(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldEQ(FieldImageOutputSize, v))
+}
+
+// ImageOutputSizeNEQ applies the NEQ predicate on the "image_output_size" field.
+func ImageOutputSizeNEQ(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldNEQ(FieldImageOutputSize, v))
+}
+
+// ImageOutputSizeIn applies the In predicate on the "image_output_size" field.
+func ImageOutputSizeIn(vs ...string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldIn(FieldImageOutputSize, vs...))
+}
+
+// ImageOutputSizeNotIn applies the NotIn predicate on the "image_output_size" field.
+func ImageOutputSizeNotIn(vs ...string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldNotIn(FieldImageOutputSize, vs...))
+}
+
+// ImageOutputSizeGT applies the GT predicate on the "image_output_size" field.
+func ImageOutputSizeGT(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldGT(FieldImageOutputSize, v))
+}
+
+// ImageOutputSizeGTE applies the GTE predicate on the "image_output_size" field.
+func ImageOutputSizeGTE(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldGTE(FieldImageOutputSize, v))
+}
+
+// ImageOutputSizeLT applies the LT predicate on the "image_output_size" field.
+func ImageOutputSizeLT(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldLT(FieldImageOutputSize, v))
+}
+
+// ImageOutputSizeLTE applies the LTE predicate on the "image_output_size" field.
+func ImageOutputSizeLTE(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldLTE(FieldImageOutputSize, v))
+}
+
+// ImageOutputSizeContains applies the Contains predicate on the "image_output_size" field.
+func ImageOutputSizeContains(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldContains(FieldImageOutputSize, v))
+}
+
+// ImageOutputSizeHasPrefix applies the HasPrefix predicate on the "image_output_size" field.
+func ImageOutputSizeHasPrefix(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldHasPrefix(FieldImageOutputSize, v))
+}
+
+// ImageOutputSizeHasSuffix applies the HasSuffix predicate on the "image_output_size" field.
+func ImageOutputSizeHasSuffix(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldHasSuffix(FieldImageOutputSize, v))
+}
+
+// ImageOutputSizeIsNil applies the IsNil predicate on the "image_output_size" field.
+func ImageOutputSizeIsNil() predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldIsNull(FieldImageOutputSize))
+}
+
+// ImageOutputSizeNotNil applies the NotNil predicate on the "image_output_size" field.
+func ImageOutputSizeNotNil() predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldNotNull(FieldImageOutputSize))
+}
+
+// ImageOutputSizeEqualFold applies the EqualFold predicate on the "image_output_size" field.
+func ImageOutputSizeEqualFold(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldEqualFold(FieldImageOutputSize, v))
+}
+
+// ImageOutputSizeContainsFold applies the ContainsFold predicate on the "image_output_size" field.
+func ImageOutputSizeContainsFold(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldContainsFold(FieldImageOutputSize, v))
+}
+
+// ImageSizeSourceEQ applies the EQ predicate on the "image_size_source" field.
+func ImageSizeSourceEQ(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldEQ(FieldImageSizeSource, v))
+}
+
+// ImageSizeSourceNEQ applies the NEQ predicate on the "image_size_source" field.
+func ImageSizeSourceNEQ(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldNEQ(FieldImageSizeSource, v))
+}
+
+// ImageSizeSourceIn applies the In predicate on the "image_size_source" field.
+func ImageSizeSourceIn(vs ...string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldIn(FieldImageSizeSource, vs...))
+}
+
+// ImageSizeSourceNotIn applies the NotIn predicate on the "image_size_source" field.
+func ImageSizeSourceNotIn(vs ...string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldNotIn(FieldImageSizeSource, vs...))
+}
+
+// ImageSizeSourceGT applies the GT predicate on the "image_size_source" field.
+func ImageSizeSourceGT(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldGT(FieldImageSizeSource, v))
+}
+
+// ImageSizeSourceGTE applies the GTE predicate on the "image_size_source" field.
+func ImageSizeSourceGTE(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldGTE(FieldImageSizeSource, v))
+}
+
+// ImageSizeSourceLT applies the LT predicate on the "image_size_source" field.
+func ImageSizeSourceLT(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldLT(FieldImageSizeSource, v))
+}
+
+// ImageSizeSourceLTE applies the LTE predicate on the "image_size_source" field.
+func ImageSizeSourceLTE(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldLTE(FieldImageSizeSource, v))
+}
+
+// ImageSizeSourceContains applies the Contains predicate on the "image_size_source" field.
+func ImageSizeSourceContains(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldContains(FieldImageSizeSource, v))
+}
+
+// ImageSizeSourceHasPrefix applies the HasPrefix predicate on the "image_size_source" field.
+func ImageSizeSourceHasPrefix(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldHasPrefix(FieldImageSizeSource, v))
+}
+
+// ImageSizeSourceHasSuffix applies the HasSuffix predicate on the "image_size_source" field.
+func ImageSizeSourceHasSuffix(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldHasSuffix(FieldImageSizeSource, v))
+}
+
+// ImageSizeSourceIsNil applies the IsNil predicate on the "image_size_source" field.
+func ImageSizeSourceIsNil() predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldIsNull(FieldImageSizeSource))
+}
+
+// ImageSizeSourceNotNil applies the NotNil predicate on the "image_size_source" field.
+func ImageSizeSourceNotNil() predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldNotNull(FieldImageSizeSource))
+}
+
+// ImageSizeSourceEqualFold applies the EqualFold predicate on the "image_size_source" field.
+func ImageSizeSourceEqualFold(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldEqualFold(FieldImageSizeSource, v))
+}
+
+// ImageSizeSourceContainsFold applies the ContainsFold predicate on the "image_size_source" field.
+func ImageSizeSourceContainsFold(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldContainsFold(FieldImageSizeSource, v))
+}
+
+// ImageSizeBreakdownIsNil applies the IsNil predicate on the "image_size_breakdown" field.
+func ImageSizeBreakdownIsNil() predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldIsNull(FieldImageSizeBreakdown))
+}
+
+// ImageSizeBreakdownNotNil applies the NotNil predicate on the "image_size_breakdown" field.
+func ImageSizeBreakdownNotNil() predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldNotNull(FieldImageSizeBreakdown))
+}
+
 // CacheTTLOverriddenEQ applies the EQ predicate on the "cache_ttl_overridden" field.
 func CacheTTLOverriddenEQ(v bool) predicate.UsageLog {
 	return predicate.UsageLog(sql.FieldEQ(FieldCacheTTLOverridden, v))

backend/ent/usagelog_create.go

@@ -477,6 +477,54 @@ func (_c *UsageLogCreate) SetNillableImageSize(v *string) *UsageLogCreate {
 	return _c
 }
 
+// SetImageInputSize sets the "image_input_size" field.
+func (_c *UsageLogCreate) SetImageInputSize(v string) *UsageLogCreate {
+	_c.mutation.SetImageInputSize(v)
+	return _c
+}
+
+// SetNillableImageInputSize sets the "image_input_size" field if the given value is not nil.
+func (_c *UsageLogCreate) SetNillableImageInputSize(v *string) *UsageLogCreate {
+	if v != nil {
+		_c.SetImageInputSize(*v)
+	}
+	return _c
+}
+
+// SetImageOutputSize sets the "image_output_size" field.
+func (_c *UsageLogCreate) SetImageOutputSize(v string) *UsageLogCreate {
+	_c.mutation.SetImageOutputSize(v)
+	return _c
+}
+
+// SetNillableImageOutputSize sets the "image_output_size" field if the given value is not nil.
+func (_c *UsageLogCreate) SetNillableImageOutputSize(v *string) *UsageLogCreate {
+	if v != nil {
+		_c.SetImageOutputSize(*v)
+	}
+	return _c
+}
+
+// SetImageSizeSource sets the "image_size_source" field.
+func (_c *UsageLogCreate) SetImageSizeSource(v string) *UsageLogCreate {
+	_c.mutation.SetImageSizeSource(v)
+	return _c
+}
+
+// SetNillableImageSizeSource sets the "image_size_source" field if the given value is not nil.
+func (_c *UsageLogCreate) SetNillableImageSizeSource(v *string) *UsageLogCreate {
+	if v != nil {
+		_c.SetImageSizeSource(*v)
+	}
+	return _c
+}
+
+// SetImageSizeBreakdown sets the "image_size_breakdown" field.
+func (_c *UsageLogCreate) SetImageSizeBreakdown(v map[string]int) *UsageLogCreate {
+	_c.mutation.SetImageSizeBreakdown(v)
+	return _c
+}
+
 // SetCacheTTLOverridden sets the "cache_ttl_overridden" field.
 func (_c *UsageLogCreate) SetCacheTTLOverridden(v bool) *UsageLogCreate {
 	_c.mutation.SetCacheTTLOverridden(v)
@@ -754,6 +802,21 @@ func (_c *UsageLogCreate) check() error {
 			return &ValidationError{Name: "image_size", err: fmt.Errorf(`ent: validator failed for field "UsageLog.image_size": %w`, err)}
 		}
 	}
+	if v, ok := _c.mutation.ImageInputSize(); ok {
+		if err := usagelog.ImageInputSizeValidator(v); err != nil {
+			return &ValidationError{Name: "image_input_size", err: fmt.Errorf(`ent: validator failed for field "UsageLog.image_input_size": %w`, err)}
+		}
+	}
+	if v, ok := _c.mutation.ImageOutputSize(); ok {
+		if err := usagelog.ImageOutputSizeValidator(v); err != nil {
+			return &ValidationError{Name: "image_output_size", err: fmt.Errorf(`ent: validator failed for field "UsageLog.image_output_size": %w`, err)}
+		}
+	}
+	if v, ok := _c.mutation.ImageSizeSource(); ok {
+		if err := usagelog.ImageSizeSourceValidator(v); err != nil {
+			return &ValidationError{Name: "image_size_source", err: fmt.Errorf(`ent: validator failed for field "UsageLog.image_size_source": %w`, err)}
+		}
+	}
 	if _, ok := _c.mutation.CacheTTLOverridden(); !ok {
 		return &ValidationError{Name: "cache_ttl_overridden", err: errors.New(`ent: missing required field "UsageLog.cache_ttl_overridden"`)}
 	}
@@ -916,6 +979,22 @@ func (_c *UsageLogCreate) createSpec() (*UsageLog, *sqlgraph.CreateSpec) {
 		_spec.SetField(usagelog.FieldImageSize, field.TypeString, value)
 		_node.ImageSize = &value
 	}
+	if value, ok := _c.mutation.ImageInputSize(); ok {
+		_spec.SetField(usagelog.FieldImageInputSize, field.TypeString, value)
+		_node.ImageInputSize = &value
+	}
+	if value, ok := _c.mutation.ImageOutputSize(); ok {
+		_spec.SetField(usagelog.FieldImageOutputSize, field.TypeString, value)
+		_node.ImageOutputSize = &value
+	}
+	if value, ok := _c.mutation.ImageSizeSource(); ok {
+		_spec.SetField(usagelog.FieldImageSizeSource, field.TypeString, value)
+		_node.ImageSizeSource = &value
+	}
+	if value, ok := _c.mutation.ImageSizeBreakdown(); ok {
+		_spec.SetField(usagelog.FieldImageSizeBreakdown, field.TypeJSON, value)
+		_node.ImageSizeBreakdown = value
+	}
 	if value, ok := _c.mutation.CacheTTLOverridden(); ok {
 		_spec.SetField(usagelog.FieldCacheTTLOverridden, field.TypeBool, value)
 		_node.CacheTTLOverridden = value
@@ -1679,6 +1758,78 @@ func (u *UsageLogUpsert) ClearImageSize() *UsageLogUpsert {
 	return u
 }
 
+// SetImageInputSize sets the "image_input_size" field.
+func (u *UsageLogUpsert) SetImageInputSize(v string) *UsageLogUpsert {
+	u.Set(usagelog.FieldImageInputSize, v)
+	return u
+}
+
+// UpdateImageInputSize sets the "image_input_size" field to the value that was provided on create.
+func (u *UsageLogUpsert) UpdateImageInputSize() *UsageLogUpsert {
+	u.SetExcluded(usagelog.FieldImageInputSize)
+	return u
+}
+
+// ClearImageInputSize clears the value of the "image_input_size" field.
+func (u *UsageLogUpsert) ClearImageInputSize() *UsageLogUpsert {
+	u.SetNull(usagelog.FieldImageInputSize)
+	return u
+}
+
+// SetImageOutputSize sets the "image_output_size" field.
+func (u *UsageLogUpsert) SetImageOutputSize(v string) *UsageLogUpsert {
+	u.Set(usagelog.FieldImageOutputSize, v)
+	return u
+}
+
+// UpdateImageOutputSize sets the "image_output_size" field to the value that was provided on create.
+func (u *UsageLogUpsert) UpdateImageOutputSize() *UsageLogUpsert {
+	u.SetExcluded(usagelog.FieldImageOutputSize)
+	return u
+}
+
+// ClearImageOutputSize clears the value of the "image_output_size" field.
+func (u *UsageLogUpsert) ClearImageOutputSize() *UsageLogUpsert {
+	u.SetNull(usagelog.FieldImageOutputSize)
+	return u
+}
+
+// SetImageSizeSource sets the "image_size_source" field.
+func (u *UsageLogUpsert) SetImageSizeSource(v string) *UsageLogUpsert {
+	u.Set(usagelog.FieldImageSizeSource, v)
+	return u
+}
+
+// UpdateImageSizeSource sets the "image_size_source" field to the value that was provided on create.
+func (u *UsageLogUpsert) UpdateImageSizeSource() *UsageLogUpsert {
+	u.SetExcluded(usagelog.FieldImageSizeSource)
+	return u
+}
+
+// ClearImageSizeSource clears the value of the "image_size_source" field.
+func (u *UsageLogUpsert) ClearImageSizeSource() *UsageLogUpsert {
+	u.SetNull(usagelog.FieldImageSizeSource)
+	return u
+}
+
+// SetImageSizeBreakdown sets the "image_size_breakdown" field.
+func (u *UsageLogUpsert) SetImageSizeBreakdown(v map[string]int) *UsageLogUpsert {
+	u.Set(usagelog.FieldImageSizeBreakdown, v)
+	return u
+}
+
+// UpdateImageSizeBreakdown sets the "image_size_breakdown" field to the value that was provided on create.
+func (u *UsageLogUpsert) UpdateImageSizeBreakdown() *UsageLogUpsert {
+	u.SetExcluded(usagelog.FieldImageSizeBreakdown)
+	return u
+}
+
+// ClearImageSizeBreakdown clears the value of the "image_size_breakdown" field.
+func (u *UsageLogUpsert) ClearImageSizeBreakdown() *UsageLogUpsert {
+	u.SetNull(usagelog.FieldImageSizeBreakdown)
+	return u
+}
+
 // SetCacheTTLOverridden sets the "cache_ttl_overridden" field.
 func (u *UsageLogUpsert) SetCacheTTLOverridden(v bool) *UsageLogUpsert {
 	u.Set(usagelog.FieldCacheTTLOverridden, v)
@@ -2457,6 +2608,90 @@ func (u *UsageLogUpsertOne) ClearImageSize() *UsageLogUpsertOne {
 	})
 }
 
+// SetImageInputSize sets the "image_input_size" field.
+func (u *UsageLogUpsertOne) SetImageInputSize(v string) *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.SetImageInputSize(v)
+	})
+}
+
+// UpdateImageInputSize sets the "image_input_size" field to the value that was provided on create.
+func (u *UsageLogUpsertOne) UpdateImageInputSize() *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.UpdateImageInputSize()
+	})
+}
+
+// ClearImageInputSize clears the value of the "image_input_size" field.
+func (u *UsageLogUpsertOne) ClearImageInputSize() *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.ClearImageInputSize()
+	})
+}
+
+// SetImageOutputSize sets the "image_output_size" field.
+func (u *UsageLogUpsertOne) SetImageOutputSize(v string) *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.SetImageOutputSize(v)
+	})
+}
+
+// UpdateImageOutputSize sets the "image_output_size" field to the value that was provided on create.
+func (u *UsageLogUpsertOne) UpdateImageOutputSize() *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.UpdateImageOutputSize()
+	})
+}
+
+// ClearImageOutputSize clears the value of the "image_output_size" field.
+func (u *UsageLogUpsertOne) ClearImageOutputSize() *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.ClearImageOutputSize()
+	})
+}
+
+// SetImageSizeSource sets the "image_size_source" field.
+func (u *UsageLogUpsertOne) SetImageSizeSource(v string) *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.SetImageSizeSource(v)
+	})
+}
+
+// UpdateImageSizeSource sets the "image_size_source" field to the value that was provided on create.
+func (u *UsageLogUpsertOne) UpdateImageSizeSource() *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.UpdateImageSizeSource()
+	})
+}
+
+// ClearImageSizeSource clears the value of the "image_size_source" field.
+func (u *UsageLogUpsertOne) ClearImageSizeSource() *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.ClearImageSizeSource()
+	})
+}
+
+// SetImageSizeBreakdown sets the "image_size_breakdown" field.
+func (u *UsageLogUpsertOne) SetImageSizeBreakdown(v map[string]int) *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.SetImageSizeBreakdown(v)
+	})
+}
+
+// UpdateImageSizeBreakdown sets the "image_size_breakdown" field to the value that was provided on create.
+func (u *UsageLogUpsertOne) UpdateImageSizeBreakdown() *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.UpdateImageSizeBreakdown()
+	})
+}
+
+// ClearImageSizeBreakdown clears the value of the "image_size_breakdown" field.
+func (u *UsageLogUpsertOne) ClearImageSizeBreakdown() *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.ClearImageSizeBreakdown()
+	})
+}
+
 // SetCacheTTLOverridden sets the "cache_ttl_overridden" field.
 func (u *UsageLogUpsertOne) SetCacheTTLOverridden(v bool) *UsageLogUpsertOne {
 	return u.Update(func(s *UsageLogUpsert) {
@@ -3403,6 +3638,90 @@ func (u *UsageLogUpsertBulk) ClearImageSize() *UsageLogUpsertBulk {
 	})
 }
 
+// SetImageInputSize sets the "image_input_size" field.
+func (u *UsageLogUpsertBulk) SetImageInputSize(v string) *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.SetImageInputSize(v)
+	})
+}
+
+// UpdateImageInputSize sets the "image_input_size" field to the value that was provided on create.
+func (u *UsageLogUpsertBulk) UpdateImageInputSize() *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.UpdateImageInputSize()
+	})
+}
+
+// ClearImageInputSize clears the value of the "image_input_size" field.
+func (u *UsageLogUpsertBulk) ClearImageInputSize() *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.ClearImageInputSize()
+	})
+}
+
+// SetImageOutputSize sets the "image_output_size" field.
+func (u *UsageLogUpsertBulk) SetImageOutputSize(v string) *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.SetImageOutputSize(v)
+	})
+}
+
+// UpdateImageOutputSize sets the "image_output_size" field to the value that was provided on create.
+func (u *UsageLogUpsertBulk) UpdateImageOutputSize() *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.UpdateImageOutputSize()
+	})
+}
+
+// ClearImageOutputSize clears the value of the "image_output_size" field.
+func (u *UsageLogUpsertBulk) ClearImageOutputSize() *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.ClearImageOutputSize()
+	})
+}
+
+// SetImageSizeSource sets the "image_size_source" field.
+func (u *UsageLogUpsertBulk) SetImageSizeSource(v string) *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.SetImageSizeSource(v)
+	})
+}
+
+// UpdateImageSizeSource sets the "image_size_source" field to the value that was provided on create.
+func (u *UsageLogUpsertBulk) UpdateImageSizeSource() *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.UpdateImageSizeSource()
+	})
+}
+
+// ClearImageSizeSource clears the value of the "image_size_source" field.
+func (u *UsageLogUpsertBulk) ClearImageSizeSource() *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.ClearImageSizeSource()
+	})
+}
+
+// SetImageSizeBreakdown sets the "image_size_breakdown" field.
+func (u *UsageLogUpsertBulk) SetImageSizeBreakdown(v map[string]int) *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.SetImageSizeBreakdown(v)
+	})
+}
+
+// UpdateImageSizeBreakdown sets the "image_size_breakdown" field to the value that was provided on create.
+func (u *UsageLogUpsertBulk) UpdateImageSizeBreakdown() *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.UpdateImageSizeBreakdown()
+	})
+}
+
+// ClearImageSizeBreakdown clears the value of the "image_size_breakdown" field.
+func (u *UsageLogUpsertBulk) ClearImageSizeBreakdown() *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.ClearImageSizeBreakdown()
+	})
+}
+
 // SetCacheTTLOverridden sets the "cache_ttl_overridden" field.
 func (u *UsageLogUpsertBulk) SetCacheTTLOverridden(v bool) *UsageLogUpsertBulk {
 	return u.Update(func(s *UsageLogUpsert) {

backend/ent/usagelog_update.go

@@ -739,6 +739,78 @@ func (_u *UsageLogUpdate) ClearImageSize() *UsageLogUpdate {
 	return _u
 }
 
+// SetImageInputSize sets the "image_input_size" field.
+func (_u *UsageLogUpdate) SetImageInputSize(v string) *UsageLogUpdate {
+	_u.mutation.SetImageInputSize(v)
+	return _u
+}
+
+// SetNillableImageInputSize sets the "image_input_size" field if the given value is not nil.
+func (_u *UsageLogUpdate) SetNillableImageInputSize(v *string) *UsageLogUpdate {
+	if v != nil {
+		_u.SetImageInputSize(*v)
+	}
+	return _u
+}
+
+// ClearImageInputSize clears the value of the "image_input_size" field.
+func (_u *UsageLogUpdate) ClearImageInputSize() *UsageLogUpdate {
+	_u.mutation.ClearImageInputSize()
+	return _u
+}
+
+// SetImageOutputSize sets the "image_output_size" field.
+func (_u *UsageLogUpdate) SetImageOutputSize(v string) *UsageLogUpdate {
+	_u.mutation.SetImageOutputSize(v)
+	return _u
+}
+
+// SetNillableImageOutputSize sets the "image_output_size" field if the given value is not nil.
+func (_u *UsageLogUpdate) SetNillableImageOutputSize(v *string) *UsageLogUpdate {
+	if v != nil {
+		_u.SetImageOutputSize(*v)
+	}
+	return _u
+}
+
+// ClearImageOutputSize clears the value of the "image_output_size" field.
+func (_u *UsageLogUpdate) ClearImageOutputSize() *UsageLogUpdate {
+	_u.mutation.ClearImageOutputSize()
+	return _u
+}
+
+// SetImageSizeSource sets the "image_size_source" field.
+func (_u *UsageLogUpdate) SetImageSizeSource(v string) *UsageLogUpdate {
+	_u.mutation.SetImageSizeSource(v)
+	return _u
+}
+
+// SetNillableImageSizeSource sets the "image_size_source" field if the given value is not nil.
+func (_u *UsageLogUpdate) SetNillableImageSizeSource(v *string) *UsageLogUpdate {
+	if v != nil {
+		_u.SetImageSizeSource(*v)
+	}
+	return _u
+}
+
+// ClearImageSizeSource clears the value of the "image_size_source" field.
+func (_u *UsageLogUpdate) ClearImageSizeSource() *UsageLogUpdate {
+	_u.mutation.ClearImageSizeSource()
+	return _u
+}
+
+// SetImageSizeBreakdown sets the "image_size_breakdown" field.
+func (_u *UsageLogUpdate) SetImageSizeBreakdown(v map[string]int) *UsageLogUpdate {
+	_u.mutation.SetImageSizeBreakdown(v)
+	return _u
+}
+
+// ClearImageSizeBreakdown clears the value of the "image_size_breakdown" field.
+func (_u *UsageLogUpdate) ClearImageSizeBreakdown() *UsageLogUpdate {
+	_u.mutation.ClearImageSizeBreakdown()
+	return _u
+}
+
 // SetCacheTTLOverridden sets the "cache_ttl_overridden" field.
 func (_u *UsageLogUpdate) SetCacheTTLOverridden(v bool) *UsageLogUpdate {
 	_u.mutation.SetCacheTTLOverridden(v)
@@ -892,6 +964,21 @@ func (_u *UsageLogUpdate) check() error {
 			return &ValidationError{Name: "image_size", err: fmt.Errorf(`ent: validator failed for field "UsageLog.image_size": %w`, err)}
 		}
 	}
+	if v, ok := _u.mutation.ImageInputSize(); ok {
+		if err := usagelog.ImageInputSizeValidator(v); err != nil {
+			return &ValidationError{Name: "image_input_size", err: fmt.Errorf(`ent: validator failed for field "UsageLog.image_input_size": %w`, err)}
+		}
+	}
+	if v, ok := _u.mutation.ImageOutputSize(); ok {
+		if err := usagelog.ImageOutputSizeValidator(v); err != nil {
+			return &ValidationError{Name: "image_output_size", err: fmt.Errorf(`ent: validator failed for field "UsageLog.image_output_size": %w`, err)}
+		}
+	}
+	if v, ok := _u.mutation.ImageSizeSource(); ok {
+		if err := usagelog.ImageSizeSourceValidator(v); err != nil {
+			return &ValidationError{Name: "image_size_source", err: fmt.Errorf(`ent: validator failed for field "UsageLog.image_size_source": %w`, err)}
+		}
+	}
 	if _u.mutation.UserCleared() && len(_u.mutation.UserIDs()) > 0 {
 		return errors.New(`ent: clearing a required unique edge "UsageLog.user"`)
 	}
@@ -1099,6 +1186,30 @@ func (_u *UsageLogUpdate) sqlSave(ctx context.Context) (_node int, err error) {
 	if _u.mutation.ImageSizeCleared() {
 		_spec.ClearField(usagelog.FieldImageSize, field.TypeString)
 	}
+	if value, ok := _u.mutation.ImageInputSize(); ok {
+		_spec.SetField(usagelog.FieldImageInputSize, field.TypeString, value)
+	}
+	if _u.mutation.ImageInputSizeCleared() {
+		_spec.ClearField(usagelog.FieldImageInputSize, field.TypeString)
+	}
+	if value, ok := _u.mutation.ImageOutputSize(); ok {
+		_spec.SetField(usagelog.FieldImageOutputSize, field.TypeString, value)
+	}
+	if _u.mutation.ImageOutputSizeCleared() {
+		_spec.ClearField(usagelog.FieldImageOutputSize, field.TypeString)
+	}
+	if value, ok := _u.mutation.ImageSizeSource(); ok {
+		_spec.SetField(usagelog.FieldImageSizeSource, field.TypeString, value)
+	}
+	if _u.mutation.ImageSizeSourceCleared() {
+		_spec.ClearField(usagelog.FieldImageSizeSource, field.TypeString)
+	}
+	if value, ok := _u.mutation.ImageSizeBreakdown(); ok {
+		_spec.SetField(usagelog.FieldImageSizeBreakdown, field.TypeJSON, value)
+	}
+	if _u.mutation.ImageSizeBreakdownCleared() {
+		_spec.ClearField(usagelog.FieldImageSizeBreakdown, field.TypeJSON)
+	}
 	if value, ok := _u.mutation.CacheTTLOverridden(); ok {
 		_spec.SetField(usagelog.FieldCacheTTLOverridden, field.TypeBool, value)
 	}
@@ -1974,6 +2085,78 @@ func (_u *UsageLogUpdateOne) ClearImageSize() *UsageLogUpdateOne {
 	return _u
 }
 
+// SetImageInputSize sets the "image_input_size" field.
+func (_u *UsageLogUpdateOne) SetImageInputSize(v string) *UsageLogUpdateOne {
+	_u.mutation.SetImageInputSize(v)
+	return _u
+}
+
+// SetNillableImageInputSize sets the "image_input_size" field if the given value is not nil.
+func (_u *UsageLogUpdateOne) SetNillableImageInputSize(v *string) *UsageLogUpdateOne {
+	if v != nil {
+		_u.SetImageInputSize(*v)
+	}
+	return _u
+}
+
+// ClearImageInputSize clears the value of the "image_input_size" field.
+func (_u *UsageLogUpdateOne) ClearImageInputSize() *UsageLogUpdateOne {
+	_u.mutation.ClearImageInputSize()
+	return _u
+}
+
+// SetImageOutputSize sets the "image_output_size" field.
+func (_u *UsageLogUpdateOne) SetImageOutputSize(v string) *UsageLogUpdateOne {
+	_u.mutation.SetImageOutputSize(v)
+	return _u
+}
+
+// SetNillableImageOutputSize sets the "image_output_size" field if the given value is not nil.
+func (_u *UsageLogUpdateOne) SetNillableImageOutputSize(v *string) *UsageLogUpdateOne {
+	if v != nil {
+		_u.SetImageOutputSize(*v)
+	}
+	return _u
+}
+
+// ClearImageOutputSize clears the value of the "image_output_size" field.
+func (_u *UsageLogUpdateOne) ClearImageOutputSize() *UsageLogUpdateOne {
+	_u.mutation.ClearImageOutputSize()
+	return _u
+}
+
+// SetImageSizeSource sets the "image_size_source" field.
+func (_u *UsageLogUpdateOne) SetImageSizeSource(v string) *UsageLogUpdateOne {
+	_u.mutation.SetImageSizeSource(v)
+	return _u
+}
+
+// SetNillableImageSizeSource sets the "image_size_source" field if the given value is not nil.
+func (_u *UsageLogUpdateOne) SetNillableImageSizeSource(v *string) *UsageLogUpdateOne {
+	if v != nil {
+		_u.SetImageSizeSource(*v)
+	}
+	return _u
+}
+
+// ClearImageSizeSource clears the value of the "image_size_source" field.
+func (_u *UsageLogUpdateOne) ClearImageSizeSource() *UsageLogUpdateOne {
+	_u.mutation.ClearImageSizeSource()
+	return _u
+}
+
+// SetImageSizeBreakdown sets the "image_size_breakdown" field.
+func (_u *UsageLogUpdateOne) SetImageSizeBreakdown(v map[string]int) *UsageLogUpdateOne {
+	_u.mutation.SetImageSizeBreakdown(v)
+	return _u
+}
+
+// ClearImageSizeBreakdown clears the value of the "image_size_breakdown" field.
+func (_u *UsageLogUpdateOne) ClearImageSizeBreakdown() *UsageLogUpdateOne {
+	_u.mutation.ClearImageSizeBreakdown()
+	return _u
+}
+
 // SetCacheTTLOverridden sets the "cache_ttl_overridden" field.
 func (_u *UsageLogUpdateOne) SetCacheTTLOverridden(v bool) *UsageLogUpdateOne {
 	_u.mutation.SetCacheTTLOverridden(v)
@@ -2140,6 +2323,21 @@ func (_u *UsageLogUpdateOne) check() error {
 			return &ValidationError{Name: "image_size", err: fmt.Errorf(`ent: validator failed for field "UsageLog.image_size": %w`, err)}
 		}
 	}
+	if v, ok := _u.mutation.ImageInputSize(); ok {
+		if err := usagelog.ImageInputSizeValidator(v); err != nil {
+			return &ValidationError{Name: "image_input_size", err: fmt.Errorf(`ent: validator failed for field "UsageLog.image_input_size": %w`, err)}
+		}
+	}
+	if v, ok := _u.mutation.ImageOutputSize(); ok {
+		if err := usagelog.ImageOutputSizeValidator(v); err != nil {
+			return &ValidationError{Name: "image_output_size", err: fmt.Errorf(`ent: validator failed for field "UsageLog.image_output_size": %w`, err)}
+		}
+	}
+	if v, ok := _u.mutation.ImageSizeSource(); ok {
+		if err := usagelog.ImageSizeSourceValidator(v); err != nil {
+			return &ValidationError{Name: "image_size_source", err: fmt.Errorf(`ent: validator failed for field "UsageLog.image_size_source": %w`, err)}
+		}
+	}
 	if _u.mutation.UserCleared() && len(_u.mutation.UserIDs()) > 0 {
 		return errors.New(`ent: clearing a required unique edge "UsageLog.user"`)
 	}
@@ -2364,6 +2562,30 @@ func (_u *UsageLogUpdateOne) sqlSave(ctx context.Context) (_node *UsageLog, err
 	if _u.mutation.ImageSizeCleared() {
 		_spec.ClearField(usagelog.FieldImageSize, field.TypeString)
 	}
+	if value, ok := _u.mutation.ImageInputSize(); ok {
+		_spec.SetField(usagelog.FieldImageInputSize, field.TypeString, value)
+	}
+	if _u.mutation.ImageInputSizeCleared() {
+		_spec.ClearField(usagelog.FieldImageInputSize, field.TypeString)
+	}
+	if value, ok := _u.mutation.ImageOutputSize(); ok {
+		_spec.SetField(usagelog.FieldImageOutputSize, field.TypeString, value)
+	}
+	if _u.mutation.ImageOutputSizeCleared() {
+		_spec.ClearField(usagelog.FieldImageOutputSize, field.TypeString)
+	}
+	if value, ok := _u.mutation.ImageSizeSource(); ok {
+		_spec.SetField(usagelog.FieldImageSizeSource, field.TypeString, value)
+	}
+	if _u.mutation.ImageSizeSourceCleared() {
+		_spec.ClearField(usagelog.FieldImageSizeSource, field.TypeString)
+	}
+	if value, ok := _u.mutation.ImageSizeBreakdown(); ok {
+		_spec.SetField(usagelog.FieldImageSizeBreakdown, field.TypeJSON, value)
+	}
+	if _u.mutation.ImageSizeBreakdownCleared() {
+		_spec.ClearField(usagelog.FieldImageSizeBreakdown, field.TypeJSON)
+	}
 	if value, ok := _u.mutation.CacheTTLOverridden(); ok {
 		_spec.SetField(usagelog.FieldCacheTTLOverridden, field.TypeBool, value)
 	}

backend/go.sum

@@ -216,6 +216,8 @@ github.com/mattn/go-colorable v0.1.13/go.mod h1:7S9/ev0klgBDR4GtXTXX8a3vIGJpMovk
 github.com/mattn/go-isatty v0.0.16/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/yFXSvRLM=
 github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
 github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
+github.com/mattn/go-runewidth v0.0.15 h1:UNAjwbU9l54TA3KzvqLGxwWjHmMgBUVhBiTjelZgg3U=
+github.com/mattn/go-runewidth v0.0.15/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
 github.com/mattn/go-sqlite3 v1.14.17 h1:mCRHCLDUBXgpKAqIKsaAaAsrAlbkeomtRFKXh2L6YIM=
 github.com/mattn/go-sqlite3 v1.14.17/go.mod h1:2eHXhiwb8IkHr+BDWZGa96P6+rkvnG63S2DGjv9HUNg=
 github.com/mdelapenya/tlscert v0.2.0 h1:7H81W6Z/4weDvZBNOfQte5GpIMo0lGYEeWbkGp5LJHI=
@@ -249,6 +251,8 @@ github.com/morikuni/aec v1.0.0 h1:nP9CBfwrvYnBRgY6qfDQkygYDmYwOilePFkwzv4dU8A=
 github.com/morikuni/aec v1.0.0/go.mod h1:BbKIizmSmc5MMPqRYbxO4ZU0S0+P200+tUnFx7PXmsc=
 github.com/ncruces/go-strftime v1.0.0 h1:HMFp8mLCTPp341M/ZnA4qaf7ZlsbTc+miZjCLOFAw7w=
 github.com/ncruces/go-strftime v1.0.0/go.mod h1:Fwc5htZGVVkseilnfgOVb9mKy6w1naJmn9CehxcKcls=
+github.com/olekukonko/tablewriter v0.0.5 h1:P2Ga83D34wi1o9J6Wh1mRuqd4mF/x/lgBS7N7AbDhec=
+github.com/olekukonko/tablewriter v0.0.5/go.mod h1:hPp6KlRPjbx+hW8ykQs1w3UBbZlj6HuIJcUGPhkA7kY=
 github.com/opencontainers/go-digest v1.0.0 h1:apOUWs51W5PlhuyGyz9FCeeBIOUDA/6nW8Oi/yOhh5U=
 github.com/opencontainers/go-digest v1.0.0/go.mod h1:0JzlMkj0TRzQZfJkVvzbP0HBR3IKzErnv2BNG4W4MAM=
 github.com/opencontainers/image-spec v1.1.1 h1:y0fUlFfIZhPF1W537XOLg0/fcx6zcHCJwooC2xJA040=
@@ -278,6 +282,8 @@ github.com/refraction-networking/utls v1.8.2 h1:j4Q1gJj0xngdeH+Ox/qND11aEfhpgoEv
 github.com/refraction-networking/utls v1.8.2/go.mod h1:jkSOEkLqn+S/jtpEHPOsVv/4V4EVnelwbMQl4vCWXAM=
 github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec h1:W09IVJc94icq4NjY3clb7Lk8O1qJ8BdBEF8z0ibU0rE=
 github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec/go.mod h1:qqbHyh8v60DhA7CoWK5oRCqLrMHRGoxYCSS9EjAz6Eo=
+github.com/rivo/uniseg v0.2.0 h1:S1pD9weZBuJdFmowNwbpi7BJ8TNftyUImj/0WQi72jY=
+github.com/rivo/uniseg v0.2.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=
 github.com/robfig/cron/v3 v3.0.1 h1:WdRxkvbJztn8LMz/QEvLN5sBU+xKpSqwwUO1Pjr4qDs=
 github.com/robfig/cron/v3 v3.0.1/go.mod h1:eQICP3HwyT7UooqI/z+Ov+PtYAWygg1TEWWzGIFLtro=
 github.com/rogpeppe/go-internal v1.13.1 h1:KvO1DLK/DRN07sQ1LQKScxyZJuNnedQ5/wKSR38lUII=
@@ -310,6 +316,8 @@ github.com/spf13/afero v1.11.0 h1:WJQKhtpdm3v2IzqG8VMqrr6Rf3UYpEF239Jy9wNepM8=
 github.com/spf13/afero v1.11.0/go.mod h1:GH9Y3pIexgf1MTIWtNGyogA5MwRIDXGUr+hbWNoBjkY=
 github.com/spf13/cast v1.6.0 h1:GEiTHELF+vaR5dhz3VqZfFSzZjYbgeKDpBxQVS4GYJ0=
 github.com/spf13/cast v1.6.0/go.mod h1:ancEpBxwJDODSW/UG4rDrAqiKolqNNh2DX3mk86cAdo=
+github.com/spf13/cobra v1.7.0 h1:hyqWnYt1ZQShIddO5kBpj3vu05/++x6tJ6dg8EC572I=
+github.com/spf13/cobra v1.7.0/go.mod h1:uLxZILRyS/50WlhOIKD7W6V5bgeIt+4sICxh6uRMrb0=
 github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
 github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
 github.com/spf13/viper v1.18.2 h1:LUXCnvUvSM6FXAsj6nnfc8Q2tp1dIgUfY9Kc8GsSOiQ=

backend/internal/handler/dto/mappers.go

@@ -600,6 +600,10 @@ func usageLogFromServiceUser(l *service.UsageLog) UsageLog {
 		FirstTokenMs:          l.FirstTokenMs,
 		ImageCount:            l.ImageCount,
 		ImageSize:             l.ImageSize,
+		ImageInputSize:        l.ImageInputSize,
+		ImageOutputSize:       l.ImageOutputSize,
+		ImageSizeSource:       l.ImageSizeSource,
+		ImageSizeBreakdown:    l.ImageSizeBreakdown,
 		MediaType:             l.MediaType,
 		UserAgent:             l.UserAgent,
 		CacheTTLOverridden:    l.CacheTTLOverridden,

backend/internal/handler/dto/mappers_usage_test.go

@@ -148,6 +148,65 @@ func TestUsageLogFromService_FallsBackToLegacyModelWhenRequestedModelMissing(t *
 	require.Equal(t, "claude-3", adminDTO.Model)
 }
 
+func TestUsageLogFromService_IncludesImageBillingMetadataForUserAndAdmin(t *testing.T) {
+	t.Parallel()
+
+	imageSize := "4K"
+	inputSize := "1024x1024"
+	outputSize := "3840x2160"
+	source := "output"
+	log := &service.UsageLog{
+		RequestID:          "req_image_metadata",
+		Model:              "gpt-image-2",
+		ImageCount:         2,
+		ImageSize:          &imageSize,
+		ImageInputSize:     &inputSize,
+		ImageOutputSize:    &outputSize,
+		ImageSizeSource:    &source,
+		ImageSizeBreakdown: map[string]int{"4K": 2},
+	}
+
+	userDTO := UsageLogFromService(log)
+	adminDTO := UsageLogFromServiceAdmin(log)
+
+	for _, got := range []*UsageLog{userDTO, &adminDTO.UsageLog} {
+		require.Equal(t, 2, got.ImageCount)
+		require.NotNil(t, got.ImageSize)
+		require.Equal(t, imageSize, *got.ImageSize)
+		require.NotNil(t, got.ImageInputSize)
+		require.Equal(t, inputSize, *got.ImageInputSize)
+		require.NotNil(t, got.ImageOutputSize)
+		require.Equal(t, outputSize, *got.ImageOutputSize)
+		require.NotNil(t, got.ImageSizeSource)
+		require.Equal(t, source, *got.ImageSizeSource)
+		require.Equal(t, map[string]int{"4K": 2}, got.ImageSizeBreakdown)
+	}
+}
+
+func TestUsageLogFromService_PreservesHistoricalMissingImageSize(t *testing.T) {
+	t.Parallel()
+
+	log := &service.UsageLog{
+		RequestID:  "req_legacy_image_missing_size",
+		Model:      "gpt-image-2",
+		ImageCount: 1,
+		ImageSize:  nil,
+	}
+
+	dto := UsageLogFromService(log)
+	require.Equal(t, 1, dto.ImageCount)
+	require.Nil(t, dto.ImageSize)
+	require.Nil(t, dto.ImageInputSize)
+	require.Nil(t, dto.ImageOutputSize)
+	require.Nil(t, dto.ImageSizeSource)
+	require.Nil(t, dto.ImageSizeBreakdown)
+
+	body, err := json.Marshal(dto)
+	require.NoError(t, err)
+	require.Contains(t, string(body), `"image_size":null`)
+	require.NotContains(t, string(body), `"image_size":"2K"`)
+}
+
 func f64Ptr(value float64) *float64 {
 	return &value
 }

backend/internal/handler/dto/types.go

@@ -400,9 +400,13 @@ type UsageLog struct {
 	FirstTokenMs *int   `json:"first_token_ms"`
 
 	// 图片生成字段
-	ImageCount int     `json:"image_count"`
+	ImageCount         int            `json:"image_count"`
-	ImageSize  *string `json:"image_size"`
+	ImageSize          *string        `json:"image_size"`
-	MediaType  *string `json:"media_type"`
+	ImageInputSize     *string        `json:"image_input_size"`
+	ImageOutputSize    *string        `json:"image_output_size"`
+	ImageSizeSource    *string        `json:"image_size_source"`
+	ImageSizeBreakdown map[string]int `json:"image_size_breakdown"`
+	MediaType          *string        `json:"media_type"`
 
 	// User-Agent
 	UserAgent *string `json:"user_agent"`

backend/internal/handler/page_handler_test.go

@@ -58,7 +58,7 @@ func TestResolvePageImagePath(t *testing.T) {
 	if !ok {
 		t.Fatal("expected direct image path to be accepted")
 	}
-	want := filepath.Join(base, "logo.png")
+	want := mustEvalSymlinks(t, filepath.Join(base, "logo.png"))
 	if got != want {
 		t.Fatalf("path = %q, want %q", got, want)
 	}
@@ -67,7 +67,7 @@ func TestResolvePageImagePath(t *testing.T) {
 	if !ok {
 		t.Fatal("expected nested image path to be accepted")
 	}
-	want = filepath.Join(base, "images", "logo.png")
+	want = mustEvalSymlinks(t, filepath.Join(base, "images", "logo.png"))
 	if got != want {
 		t.Fatalf("path = %q, want %q", got, want)
 	}
@@ -100,3 +100,13 @@ func TestResolvePageImagePathRejectsSymlinkEscape(t *testing.T) {
 		t.Fatalf("expected symlink escape to be rejected, got %q", got)
 	}
 }
+
+func mustEvalSymlinks(t *testing.T, path string) string {
+	t.Helper()
+
+	realPath, err := filepath.EvalSymlinks(path)
+	if err != nil {
+		t.Fatalf("eval symlinks for %q: %v", path, err)
+	}
+	return realPath
+}

backend/internal/repository/migrations_schema_integration_test.go

@@ -44,6 +44,33 @@ func TestMigrationsRunner_IsIdempotent_AndSchemaIsUpToDate(t *testing.T) {
 	requireColumn(t, tx, "usage_logs", "billing_type", "smallint", 0, false)
 	requireColumn(t, tx, "usage_logs", "request_type", "smallint", 0, false)
 	requireColumn(t, tx, "usage_logs", "openai_ws_mode", "boolean", 0, false)
+	requireColumn(t, tx, "usage_logs", "image_input_size", "character varying", 32, true)
+	requireColumn(t, tx, "usage_logs", "image_output_size", "character varying", 32, true)
+	requireColumn(t, tx, "usage_logs", "image_size_source", "character varying", 16, true)
+	requireColumn(t, tx, "usage_logs", "image_size_breakdown", "jsonb", 0, true)
+	requireConstraintDefinitionContains(
+		t,
+		tx,
+		"usage_logs",
+		"usage_logs_image_size_source_check",
+		"image_size_source",
+		"'output'",
+		"'input'",
+		"'default'",
+		"'legacy'",
+	)
+	requireConstraintDefinitionContains(
+		t,
+		tx,
+		"usage_logs",
+		"usage_logs_image_billing_size_check",
+		"image_count",
+		"image_size IS NOT NULL",
+		"'1K'",
+		"'2K'",
+		"'4K'",
+		"'mixed'",
+	)
 
 	// usage_billing_dedup: billing idempotency narrow table
 	var usageBillingDedupRegclass sql.NullString

backend/internal/repository/usage_log_repo.go

@@ -28,7 +28,7 @@ import (
 	gocache "github.com/patrickmn/go-cache"
 )
 
-const usageLogSelectColumns = "id, user_id, api_key_id, account_id, request_id, model, requested_model, upstream_model, group_id, subscription_id, input_tokens, output_tokens, cache_creation_tokens, cache_read_tokens, cache_creation_5m_tokens, cache_creation_1h_tokens, image_output_tokens, image_output_cost, input_cost, output_cost, cache_creation_cost, cache_read_cost, total_cost, actual_cost, rate_multiplier, account_rate_multiplier, billing_type, request_type, stream, openai_ws_mode, duration_ms, first_token_ms, user_agent, ip_address, image_count, image_size, service_tier, reasoning_effort, inbound_endpoint, upstream_endpoint, cache_ttl_overridden, channel_id, model_mapping_chain, billing_tier, billing_mode, account_stats_cost, created_at"
+const usageLogSelectColumns = "id, user_id, api_key_id, account_id, request_id, model, requested_model, upstream_model, group_id, subscription_id, input_tokens, output_tokens, cache_creation_tokens, cache_read_tokens, cache_creation_5m_tokens, cache_creation_1h_tokens, image_output_tokens, image_output_cost, input_cost, output_cost, cache_creation_cost, cache_read_cost, total_cost, actual_cost, rate_multiplier, account_rate_multiplier, billing_type, request_type, stream, openai_ws_mode, duration_ms, first_token_ms, user_agent, ip_address, image_count, image_size, image_input_size, image_output_size, image_size_source, image_size_breakdown, service_tier, reasoning_effort, inbound_endpoint, upstream_endpoint, cache_ttl_overridden, channel_id, model_mapping_chain, billing_tier, billing_mode, account_stats_cost, created_at"
 
 // usageLogInsertArgTypes must stay in the same order as:
 //  1. prepareUsageLogInsert().args
@@ -73,6 +73,10 @@ var usageLogInsertArgTypes = [...]string{
 	"text",        // ip_address
 	"integer",     // image_count
 	"text",        // image_size
+	"text",        // image_input_size
+	"text",        // image_output_size
+	"text",        // image_size_source
+	"jsonb",       // image_size_breakdown
 	"text",        // service_tier
 	"text",        // reasoning_effort
 	"text",        // inbound_endpoint
@@ -120,6 +124,24 @@ func appendRawUsageLogModelWhereCondition(conditions []string, args []any, model
 	return conditions, args
 }
 
+func appendUsageLogBillingModeWhereCondition(conditions []string, args []any, billingMode string) ([]string, []any) {
+	mode := strings.TrimSpace(billingMode)
+	if mode == "" {
+		return conditions, args
+	}
+	placeholder := fmt.Sprintf("$%d", len(args)+1)
+	switch service.BillingMode(mode) {
+	case service.BillingModeImage:
+		conditions = append(conditions, fmt.Sprintf("(billing_mode = %s OR COALESCE(image_count, 0) > 0)", placeholder))
+	case service.BillingModeToken:
+		conditions = append(conditions, fmt.Sprintf("(billing_mode = %s OR ((billing_mode IS NULL OR billing_mode = '') AND COALESCE(image_count, 0) <= 0))", placeholder))
+	default:
+		conditions = append(conditions, fmt.Sprintf("billing_mode = %s", placeholder))
+	}
+	args = append(args, mode)
+	return conditions, args
+}
+
 // appendRawUsageLogModelQueryFilter keeps direct model filters on the raw model column for backward
 // compatibility with historical rows. Requested/upstream analytics must use
 // resolveModelDimensionExpression instead.
@@ -352,6 +374,10 @@ func (r *usageLogRepository) createSingle(ctx context.Context, sqlq sqlExecutor,
 			ip_address,
 			image_count,
 			image_size,
+			image_input_size,
+			image_output_size,
+			image_size_source,
+			image_size_breakdown,
 			service_tier,
 			reasoning_effort,
 			inbound_endpoint,
@@ -369,7 +395,7 @@ func (r *usageLogRepository) createSingle(ctx context.Context, sqlq sqlExecutor,
 			$10, $11, $12, $13,
 			$14, $15, $16, $17,
 			$18, $19, $20, $21, $22, $23,
-			$24, $25, $26, $27, $28, $29, $30, $31, $32, $33, $34, $35, $36, $37, $38, $39, $40, $41, $42, $43, $44, $45, $46
+			$24, $25, $26, $27, $28, $29, $30, $31, $32, $33, $34, $35, $36, $37, $38, $39, $40, $41, $42, $43, $44, $45, $46, $47, $48, $49, $50
 		)
 		ON CONFLICT (request_id, api_key_id) DO NOTHING
 		RETURNING id, created_at
@@ -790,6 +816,10 @@ func buildUsageLogBatchInsertQuery(keys []string, preparedByKey map[string]usage
 			ip_address,
 			image_count,
 			image_size,
+			image_input_size,
+			image_output_size,
+			image_size_source,
+			image_size_breakdown,
 			service_tier,
 			reasoning_effort,
 			inbound_endpoint,
@@ -803,7 +833,7 @@ func buildUsageLogBatchInsertQuery(keys []string, preparedByKey map[string]usage
 			created_at
 		) AS (VALUES `)
 
-	args := make([]any, 0, len(keys)*46)
+	args := make([]any, 0, len(keys)*50)
 	argPos := 1
 	for idx, key := range keys {
 		if idx > 0 {
@@ -867,6 +897,10 @@ func buildUsageLogBatchInsertQuery(keys []string, preparedByKey map[string]usage
 				ip_address,
 				image_count,
 				image_size,
+				image_input_size,
+				image_output_size,
+				image_size_source,
+				image_size_breakdown,
 				service_tier,
 				reasoning_effort,
 				inbound_endpoint,
@@ -915,6 +949,10 @@ func buildUsageLogBatchInsertQuery(keys []string, preparedByKey map[string]usage
 				ip_address,
 				image_count,
 				image_size,
+				image_input_size,
+				image_output_size,
+				image_size_source,
+				image_size_breakdown,
 				service_tier,
 				reasoning_effort,
 				inbound_endpoint,
@@ -1003,6 +1041,10 @@ func buildUsageLogBestEffortInsertQuery(preparedList []usageLogInsertPrepared) (
 			ip_address,
 			image_count,
 			image_size,
+			image_input_size,
+			image_output_size,
+			image_size_source,
+			image_size_breakdown,
 			service_tier,
 			reasoning_effort,
 			inbound_endpoint,
@@ -1016,7 +1058,7 @@ func buildUsageLogBestEffortInsertQuery(preparedList []usageLogInsertPrepared) (
 			created_at
 		) AS (VALUES `)
 
-	args := make([]any, 0, len(preparedList)*46)
+	args := make([]any, 0, len(preparedList)*50)
 	argPos := 1
 	for idx, prepared := range preparedList {
 		if idx > 0 {
@@ -1077,6 +1119,10 @@ func buildUsageLogBestEffortInsertQuery(preparedList []usageLogInsertPrepared) (
 			ip_address,
 			image_count,
 			image_size,
+			image_input_size,
+			image_output_size,
+			image_size_source,
+			image_size_breakdown,
 			service_tier,
 			reasoning_effort,
 			inbound_endpoint,
@@ -1125,6 +1171,10 @@ func buildUsageLogBestEffortInsertQuery(preparedList []usageLogInsertPrepared) (
 			ip_address,
 			image_count,
 			image_size,
+			image_input_size,
+			image_output_size,
+			image_size_source,
+			image_size_breakdown,
 			service_tier,
 			reasoning_effort,
 			inbound_endpoint,
@@ -1181,6 +1231,10 @@ func execUsageLogInsertNoResult(ctx context.Context, sqlq sqlExecutor, prepared
 			ip_address,
 			image_count,
 			image_size,
+			image_input_size,
+			image_output_size,
+			image_size_source,
+			image_size_breakdown,
 			service_tier,
 			reasoning_effort,
 			inbound_endpoint,
@@ -1198,7 +1252,7 @@ func execUsageLogInsertNoResult(ctx context.Context, sqlq sqlExecutor, prepared
 			$10, $11, $12, $13,
 			$14, $15, $16, $17,
 			$18, $19, $20, $21, $22, $23,
-			$24, $25, $26, $27, $28, $29, $30, $31, $32, $33, $34, $35, $36, $37, $38, $39, $40, $41, $42, $43, $44, $45, $46
+			$24, $25, $26, $27, $28, $29, $30, $31, $32, $33, $34, $35, $36, $37, $38, $39, $40, $41, $42, $43, $44, $45, $46, $47, $48, $49, $50
 		)
 		ON CONFLICT (request_id, api_key_id) DO NOTHING
 	`, prepared.args...)
@@ -1225,6 +1279,10 @@ func prepareUsageLogInsert(log *service.UsageLog) usageLogInsertPrepared {
 	userAgent := nullString(log.UserAgent)
 	ipAddress := nullString(log.IPAddress)
 	imageSize := nullString(log.ImageSize)
+	imageInputSize := nullString(log.ImageInputSize)
+	imageOutputSize := nullString(log.ImageOutputSize)
+	imageSizeSource := nullString(log.ImageSizeSource)
+	imageSizeBreakdown := nullStringIntMapJSON(log.ImageSizeBreakdown)
 	serviceTier := nullString(log.ServiceTier)
 	reasoningEffort := nullString(log.ReasoningEffort)
 	inboundEndpoint := nullString(log.InboundEndpoint)
@@ -1285,6 +1343,10 @@ func prepareUsageLogInsert(log *service.UsageLog) usageLogInsertPrepared {
 			ipAddress,
 			log.ImageCount,
 			imageSize,
+			imageInputSize,
+			imageOutputSize,
+			imageSizeSource,
+			imageSizeBreakdown,
 			serviceTier,
 			reasoningEffort,
 			inboundEndpoint,
@@ -2662,10 +2724,7 @@ func (r *usageLogRepository) ListWithFilters(ctx context.Context, params paginat
 		conditions = append(conditions, fmt.Sprintf("billing_type = $%d", len(args)+1))
 		args = append(args, int16(*filters.BillingType))
 	}
-	if filters.BillingMode != "" {
+	conditions, args = appendUsageLogBillingModeWhereCondition(conditions, args, filters.BillingMode)
-		conditions = append(conditions, fmt.Sprintf("billing_mode = $%d", len(args)+1))
-		args = append(args, filters.BillingMode)
-	}
 	if filters.StartTime != nil {
 		conditions = append(conditions, fmt.Sprintf("created_at >= $%d", len(args)+1))
 		args = append(args, *filters.StartTime)
@@ -3363,10 +3422,7 @@ func (r *usageLogRepository) GetStatsWithFilters(ctx context.Context, filters Us
 		conditions = append(conditions, fmt.Sprintf("billing_type = $%d", len(args)+1))
 		args = append(args, int16(*filters.BillingType))
 	}
-	if filters.BillingMode != "" {
+	conditions, args = appendUsageLogBillingModeWhereCondition(conditions, args, filters.BillingMode)
-		conditions = append(conditions, fmt.Sprintf("billing_mode = $%d", len(args)+1))
-		args = append(args, filters.BillingMode)
-	}
 	if filters.StartTime != nil {
 		conditions = append(conditions, fmt.Sprintf("created_at >= $%d", len(args)+1))
 		args = append(args, *filters.StartTime)
@@ -4084,6 +4140,10 @@ func scanUsageLog(scanner interface{ Scan(...any) error }) (*service.UsageLog, e
 		ipAddress             sql.NullString
 		imageCount            int
 		imageSize             sql.NullString
+		imageInputSize        sql.NullString
+		imageOutputSize       sql.NullString
+		imageSizeSource       sql.NullString
+		imageSizeBreakdown    sql.NullString
 		serviceTier           sql.NullString
 		reasoningEffort       sql.NullString
 		inboundEndpoint       sql.NullString
@@ -4134,6 +4194,10 @@ func scanUsageLog(scanner interface{ Scan(...any) error }) (*service.UsageLog, e
 		&ipAddress,
 		&imageCount,
 		&imageSize,
+		&imageInputSize,
+		&imageOutputSize,
+		&imageSizeSource,
+		&imageSizeBreakdown,
 		&serviceTier,
 		&reasoningEffort,
 		&inboundEndpoint,
@@ -4212,6 +4276,16 @@ func scanUsageLog(scanner interface{ Scan(...any) error }) (*service.UsageLog, e
 	if imageSize.Valid {
 		log.ImageSize = &imageSize.String
 	}
+	if imageInputSize.Valid {
+		log.ImageInputSize = &imageInputSize.String
+	}
+	if imageOutputSize.Valid {
+		log.ImageOutputSize = &imageOutputSize.String
+	}
+	if imageSizeSource.Valid {
+		log.ImageSizeSource = &imageSizeSource.String
+	}
+	log.ImageSizeBreakdown = stringIntMapFromNullJSON(imageSizeBreakdown)
 	if serviceTier.Valid {
 		log.ServiceTier = &serviceTier.String
 	}
@@ -4378,6 +4452,31 @@ func nullString(v *string) sql.NullString {
 	return sql.NullString{String: *v, Valid: true}
 }
 
+func nullStringIntMapJSON(v map[string]int) any {
+	if len(v) == 0 {
+		return nil
+	}
+	payload, err := json.Marshal(v)
+	if err != nil {
+		return nil
+	}
+	return string(payload)
+}
+
+func stringIntMapFromNullJSON(v sql.NullString) map[string]int {
+	if !v.Valid || strings.TrimSpace(v.String) == "" {
+		return nil
+	}
+	var out map[string]int
+	if err := json.Unmarshal([]byte(v.String), &out); err != nil {
+		return nil
+	}
+	if len(out) == 0 {
+		return nil
+	}
+	return out
+}
+
 func coalesceTrimmedString(v sql.NullString, fallback string) string {
 	if v.Valid && strings.TrimSpace(v.String) != "" {
 		return v.String

backend/internal/repository/usage_log_repo_request_type_test.go

@@ -76,6 +76,10 @@ func TestUsageLogRepositoryCreateSyncRequestTypeAndLegacyFields(t *testing.T) {
 			sqlmock.AnyArg(), // ip_address
 			log.ImageCount,
 			sqlmock.AnyArg(), // image_size
+			sqlmock.AnyArg(), // image_input_size
+			sqlmock.AnyArg(), // image_output_size
+			sqlmock.AnyArg(), // image_size_source
+			sqlmock.AnyArg(), // image_size_breakdown
 			sqlmock.AnyArg(), // service_tier
 			sqlmock.AnyArg(), // reasoning_effort
 			sqlmock.AnyArg(), // inbound_endpoint
@@ -155,6 +159,10 @@ func TestUsageLogRepositoryCreate_PersistsServiceTier(t *testing.T) {
 			sqlmock.AnyArg(),
 			log.ImageCount,
 			sqlmock.AnyArg(),
+			sqlmock.AnyArg(), // image_input_size
+			sqlmock.AnyArg(), // image_output_size
+			sqlmock.AnyArg(), // image_size_source
+			sqlmock.AnyArg(), // image_size_breakdown
 			serviceTier,
 			sqlmock.AnyArg(),
 			sqlmock.AnyArg(),
@@ -230,12 +238,72 @@ func TestPrepareUsageLogInsert_ArgCountMatchesTypes(t *testing.T) {
 	require.Len(t, prepared.args, len(usageLogInsertArgTypes))
 }
 
+func TestPrepareUsageLogInsert_PersistsImageSizeMetadata(t *testing.T) {
+	imageSize := "4K"
+	inputSize := "1024x1024"
+	outputSize := "3840x2160"
+	source := "output"
+	prepared := prepareUsageLogInsert(&service.UsageLog{
+		UserID:             1,
+		APIKeyID:           2,
+		AccountID:          3,
+		RequestID:          "req-image-metadata",
+		Model:              "gpt-image-2",
+		RequestedModel:     "gpt-image-2",
+		ImageCount:         2,
+		ImageSize:          &imageSize,
+		ImageInputSize:     &inputSize,
+		ImageOutputSize:    &outputSize,
+		ImageSizeSource:    &source,
+		ImageSizeBreakdown: map[string]int{"1K": 1, "4K": 1},
+		CreatedAt:          time.Date(2025, 1, 6, 12, 0, 0, 0, time.UTC),
+	})
+
+	require.Equal(t, sql.NullString{String: imageSize, Valid: true}, prepared.args[34])
+	require.Equal(t, sql.NullString{String: inputSize, Valid: true}, prepared.args[35])
+	require.Equal(t, sql.NullString{String: outputSize, Valid: true}, prepared.args[36])
+	require.Equal(t, sql.NullString{String: source, Valid: true}, prepared.args[37])
+	require.JSONEq(t, `{"1K":1,"4K":1}`, prepared.args[38].(string))
+}
+
 func TestCoalesceTrimmedString(t *testing.T) {
 	require.Equal(t, "fallback", coalesceTrimmedString(sql.NullString{}, "fallback"))
 	require.Equal(t, "fallback", coalesceTrimmedString(sql.NullString{Valid: true, String: "   "}, "fallback"))
 	require.Equal(t, "value", coalesceTrimmedString(sql.NullString{Valid: true, String: "value"}, "fallback"))
 }
 
+func TestAppendUsageLogBillingModeWhereCondition(t *testing.T) {
+	tests := []struct {
+		name          string
+		billingMode   string
+		wantCondition string
+	}{
+		{
+			name:          "image includes legacy image rows",
+			billingMode:   string(service.BillingModeImage),
+			wantCondition: "(billing_mode = $1 OR COALESCE(image_count, 0) > 0)",
+		},
+		{
+			name:          "token includes legacy non-image rows",
+			billingMode:   string(service.BillingModeToken),
+			wantCondition: "(billing_mode = $1 OR ((billing_mode IS NULL OR billing_mode = '') AND COALESCE(image_count, 0) <= 0))",
+		},
+		{
+			name:          "per request remains exact",
+			billingMode:   string(service.BillingModePerRequest),
+			wantCondition: "billing_mode = $1",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			conditions, args := appendUsageLogBillingModeWhereCondition(nil, nil, tt.billingMode)
+			require.Equal(t, []string{tt.wantCondition}, conditions)
+			require.Equal(t, []any{tt.billingMode}, args)
+		})
+	}
+}
+
 func anySliceToDriverValues(values []any) []driver.Value {
 	out := make([]driver.Value, 0, len(values))
 	for _, value := range values {
@@ -528,6 +596,63 @@ func (s usageLogScannerStub) Scan(dest ...any) error {
 }
 
 func TestScanUsageLogRequestTypeAndLegacyFallback(t *testing.T) {
+	t.Run("image_size_metadata_is_scanned", func(t *testing.T) {
+		now := time.Now().UTC()
+		log, err := scanUsageLog(usageLogScannerStub{values: []any{
+			int64(4),
+			int64(13),
+			int64(23),
+			int64(33),
+			sql.NullString{Valid: true, String: "req-image-metadata"},
+			"gpt-image-2",
+			sql.NullString{Valid: true, String: "gpt-image-2"},
+			sql.NullString{},
+			sql.NullInt64{},
+			sql.NullInt64{},
+			0, 0, 0, 0, 0, 0,
+			0, 0.0, // image_output_tokens, image_output_cost
+			0.0, 0.0, 0.0, 0.0, 0.8, 0.8,
+			1.0,
+			sql.NullFloat64{},
+			int16(service.BillingTypeBalance),
+			int16(service.RequestTypeSync),
+			false,
+			false,
+			sql.NullInt64{},
+			sql.NullInt64{},
+			sql.NullString{},
+			sql.NullString{},
+			2,
+			sql.NullString{Valid: true, String: "4K"},
+			sql.NullString{Valid: true, String: "1024x1024"},
+			sql.NullString{Valid: true, String: "3840x2160"},
+			sql.NullString{Valid: true, String: "output"},
+			sql.NullString{Valid: true, String: `{"4K":2}`},
+			sql.NullString{},
+			sql.NullString{},
+			sql.NullString{},
+			sql.NullString{},
+			false,
+			sql.NullInt64{},
+			sql.NullString{},
+			sql.NullString{},
+			sql.NullString{},
+			sql.NullFloat64{},
+			now,
+		}})
+		require.NoError(t, err)
+		require.Equal(t, 2, log.ImageCount)
+		require.NotNil(t, log.ImageSize)
+		require.Equal(t, "4K", *log.ImageSize)
+		require.NotNil(t, log.ImageInputSize)
+		require.Equal(t, "1024x1024", *log.ImageInputSize)
+		require.NotNil(t, log.ImageOutputSize)
+		require.Equal(t, "3840x2160", *log.ImageOutputSize)
+		require.NotNil(t, log.ImageSizeSource)
+		require.Equal(t, "output", *log.ImageSizeSource)
+		require.Equal(t, map[string]int{"4K": 2}, log.ImageSizeBreakdown)
+	})
+
 	t.Run("request_type_ws_v2_overrides_legacy", func(t *testing.T) {
 		now := time.Now().UTC()
 		log, err := scanUsageLog(usageLogScannerStub{values: []any{
@@ -567,6 +692,10 @@ func TestScanUsageLogRequestTypeAndLegacyFallback(t *testing.T) {
 			sql.NullString{},
 			0,
 			sql.NullString{},
+			sql.NullString{}, // image_input_size
+			sql.NullString{}, // image_output_size
+			sql.NullString{}, // image_size_source
+			sql.NullString{}, // image_size_breakdown
 			sql.NullString{Valid: true, String: "priority"},
 			sql.NullString{},
 			sql.NullString{},
@@ -615,6 +744,10 @@ func TestScanUsageLogRequestTypeAndLegacyFallback(t *testing.T) {
 			sql.NullString{},
 			0,
 			sql.NullString{},
+			sql.NullString{}, // image_input_size
+			sql.NullString{}, // image_output_size
+			sql.NullString{}, // image_size_source
+			sql.NullString{}, // image_size_breakdown
 			sql.NullString{Valid: true, String: "flex"},
 			sql.NullString{},
 			sql.NullString{},
@@ -663,6 +796,10 @@ func TestScanUsageLogRequestTypeAndLegacyFallback(t *testing.T) {
 			sql.NullString{},
 			0,
 			sql.NullString{},
+			sql.NullString{}, // image_input_size
+			sql.NullString{}, // image_output_size
+			sql.NullString{}, // image_size_source
+			sql.NullString{}, // image_size_breakdown
 			sql.NullString{Valid: true, String: "priority"},
 			sql.NullString{},
 			sql.NullString{},

backend/internal/server/api_contract_test.go

@@ -554,6 +554,10 @@ func TestAPIContracts(t *testing.T) {
 							"first_token_ms": 50,
 							"image_count": 0,
 							"image_size": null,
+							"image_input_size": null,
+							"image_output_size": null,
+							"image_size_source": null,
+							"image_size_breakdown": null,
 							"media_type": null,
 							"cache_ttl_overridden": false,
 							"created_at": "2025-01-02T03:04:05Z",

backend/internal/service/antigravity_gateway_service.go

@@ -2094,7 +2094,8 @@ func (s *AntigravityGatewayService) ForwardGemini(ctx context.Context, c *gin.Co
 	}
 
 	// 解析请求以获取 image_size（用于图片计费）
-	imageSize := s.extractImageSize(body)
+	imageInputSize := s.extractImageInputSize(body)
+	imageSize := normalizeOpenAIImageSizeTier(imageInputSize)
 
 	switch action {
 	case "generateContent", "streamGenerateContent":
@@ -2465,6 +2466,7 @@ handleSuccess:
 		ClientDisconnect: clientDisconnect,
 		ImageCount:       imageCount,
 		ImageSize:        imageSize,
+		ImageInputSize:   imageInputSize,
 	}, nil
 }
 
@@ -4065,19 +4067,20 @@ func (s *AntigravityGatewayService) handleClaudeStreamingResponse(c *gin.Context
 
 // extractImageSize 从 Gemini 请求中提取 image_size 参数
 func (s *AntigravityGatewayService) extractImageSize(body []byte) string {
+	return normalizeOpenAIImageSizeTier(s.extractImageInputSize(body))
+}
+
+func (s *AntigravityGatewayService) extractImageInputSize(body []byte) string {
 	var req antigravity.GeminiRequest
 	if err := json.Unmarshal(body, &req); err != nil {
-		return "2K" // 默认 2K
+		return ""
 	}
 
 	if req.GenerationConfig != nil && req.GenerationConfig.ImageConfig != nil {
-		size := strings.ToUpper(strings.TrimSpace(req.GenerationConfig.ImageConfig.ImageSize))
+		return strings.TrimSpace(req.GenerationConfig.ImageConfig.ImageSize)
-		if size == "1K" || size == "2K" || size == "4K" {
-			return size
-		}
 	}
 
-	return "2K" // 默认 2K
+	return ""
 }
 
 // isImageGenerationModel 判断模型是否为图片生成模型

backend/internal/service/billing_service.go

@@ -809,6 +809,7 @@ func (s *BillingService) CalculateImageCost(model string, imageSize string, imag
 	if imageCount <= 0 {
 		return &CostBreakdown{}
 	}
+	imageSize = NormalizeImageBillingTierOrDefault(imageSize)
 
 	// 获取单价
 	unitPrice := s.getImageUnitPrice(model, imageSize, groupConfig)

backend/internal/service/billing_service_image_test.go

@@ -48,6 +48,21 @@ func TestCalculateImageCost_GroupCustomPricing(t *testing.T) {
 	require.InDelta(t, 0.30, cost.TotalCost, 0.0001)
 }
 
+func TestCalculateImageCost_NormalizesInvalidSizeTo2K(t *testing.T) {
+	svc := &BillingService{}
+
+	price2K := 0.25
+	groupConfig := &ImagePriceConfig{Price2K: &price2K}
+
+	for _, imageSize := range []string{"", "auto", "not-a-size"} {
+		t.Run(imageSize, func(t *testing.T) {
+			cost := svc.CalculateImageCost("gemini-3-pro-image", imageSize, 2, groupConfig, 1.0)
+			require.InDelta(t, 0.50, cost.TotalCost, 0.0001)
+			require.InDelta(t, 0.50, cost.ActualCost, 0.0001)
+		})
+	}
+}
+
 // TestCalculateImageCost_4KDoublePrice 测试 4K 默认价格翻倍
 func TestCalculateImageCost_4KDoublePrice(t *testing.T) {
 	svc := &BillingService{}

backend/internal/service/gateway_record_usage_test.go

@@ -192,6 +192,46 @@ func TestGatewayServiceRecordUsage_PreservesRequestedAndUpstreamModels(t *testin
 	require.Equal(t, mappedModel, *usageRepo.lastLog.UpstreamModel)
 }
 
+func TestGatewayServiceRecordUsage_EmptyImageSizeDefaultsBeforeBillingAndPersistence(t *testing.T) {
+	imagePrice2K := 0.19
+	groupID := int64(901)
+	usageRepo := &openAIRecordUsageLogRepoStub{inserted: true}
+	svc := newGatewayRecordUsageServiceForTest(usageRepo, &openAIRecordUsageUserRepoStub{}, &openAIRecordUsageSubRepoStub{})
+
+	err := svc.RecordUsage(context.Background(), &RecordUsageInput{
+		Result: &ForwardResult{
+			RequestID:      "gateway_image_default_size",
+			Model:          "gemini-image",
+			ImageCount:     1,
+			ImageInputSize: "auto",
+			Duration:       time.Second,
+		},
+		APIKey: &APIKey{
+			ID:      801,
+			GroupID: i64p(groupID),
+			Group: &Group{
+				ID:             groupID,
+				RateMultiplier: 1.0,
+				ImagePrice2K:   &imagePrice2K,
+			},
+		},
+		User:    &User{ID: 601},
+		Account: &Account{ID: 701},
+	})
+
+	require.NoError(t, err)
+	require.NotNil(t, usageRepo.lastLog)
+	require.Equal(t, 1, usageRepo.lastLog.ImageCount)
+	require.NotNil(t, usageRepo.lastLog.ImageSize)
+	require.Equal(t, ImageBillingSize2K, *usageRepo.lastLog.ImageSize)
+	require.NotNil(t, usageRepo.lastLog.ImageInputSize)
+	require.Equal(t, "auto", *usageRepo.lastLog.ImageInputSize)
+	require.NotNil(t, usageRepo.lastLog.ImageSizeSource)
+	require.Equal(t, ImageSizeSourceDefault, *usageRepo.lastLog.ImageSizeSource)
+	require.InDelta(t, 0.19, usageRepo.lastLog.TotalCost, 1e-12)
+	require.InDelta(t, 0.19, usageRepo.lastLog.ActualCost, 1e-12)
+}
+
 func TestGatewayServiceRecordUsage_UsageLogWriteErrorDoesNotSkipBilling(t *testing.T) {
 	usageRepo := &openAIRecordUsageLogRepoStub{inserted: false, err: MarkUsageLogCreateNotPersisted(context.Canceled)}
 	userRepo := &openAIRecordUsageUserRepoStub{}

backend/internal/service/gateway_service.go

@@ -501,8 +501,13 @@ type ForwardResult struct {
 	ReasoningEffort  *string
 
 	// 图片生成计费字段（图片生成模型使用）
-	ImageCount int    // 生成的图片数量
+	ImageCount         int    // 生成的图片数量
-	ImageSize  string // 图片尺寸 "1K", "2K", "4K"
+	ImageSize          string // 最终计费尺寸 "1K", "2K", "4K"
+	ImageInputSize     string // 请求中的原始图片尺寸
+	ImageOutputSize    string // 上游响应中的图片尺寸
+	ImageOutputSizes   []string
+	ImageSizeSource    string
+	ImageSizeBreakdown map[string]int
 }
 
 // UpstreamFailoverError indicates an upstream error that should trigger account failover.
@@ -8369,6 +8374,7 @@ func (s *GatewayService) recordUsageCore(ctx context.Context, input *recordUsage
 	user := input.User
 	account := input.Account
 	subscription := input.Subscription
+	ApplyForwardImageBillingResolution(result)
 
 	// 强制缓存计费：将 input_tokens 转为 cache_read_input_tokens
 	// 用于粘性会话切换时的特殊计费处理
@@ -8514,6 +8520,7 @@ func (s *GatewayService) calculateImageCost(
 	billingModel string,
 	multiplier float64,
 ) *CostBreakdown {
+	sizeTier := NormalizeImageBillingTierOrDefault(result.ImageSize)
 	if resolved := s.resolveChannelPricing(ctx, billingModel, apiKey); resolved != nil {
 		tokens := UsageTokens{
 			InputTokens:       result.Usage.InputTokens,
@@ -8527,7 +8534,7 @@ func (s *GatewayService) calculateImageCost(
 			GroupID:        &gid,
 			Tokens:         tokens,
 			RequestCount:   result.ImageCount,
-			SizeTier:       result.ImageSize,
+			SizeTier:       sizeTier,
 			RateMultiplier: multiplier,
 			Resolver:       s.resolver,
 			Resolved:       resolved,
@@ -8547,7 +8554,7 @@ func (s *GatewayService) calculateImageCost(
 			Price4K: apiKey.Group.ImagePrice4K,
 		}
 	}
-	return s.billingService.CalculateImageCost(billingModel, result.ImageSize, result.ImageCount, groupConfig, multiplier)
+	return s.billingService.CalculateImageCost(billingModel, sizeTier, result.ImageCount, groupConfig, multiplier)
 }
 
 // calculateTokenCost 计算 Token 计费：根据 opts 决定走普通/长上下文/渠道统一计费。
@@ -8648,6 +8655,10 @@ func (s *GatewayService) buildRecordUsageLog(
 		FirstTokenMs:          result.FirstTokenMs,
 		ImageCount:            result.ImageCount,
 		ImageSize:             optionalTrimmedStringPtr(result.ImageSize),
+		ImageInputSize:        optionalTrimmedStringPtr(result.ImageInputSize),
+		ImageOutputSize:       optionalTrimmedStringPtr(result.ImageOutputSize),
+		ImageSizeSource:       optionalTrimmedStringPtr(result.ImageSizeSource),
+		ImageSizeBreakdown:    result.ImageSizeBreakdown,
 		CacheTTLOverridden:    cacheTTLOverridden,
 		ChannelID:             optionalInt64Ptr(input.ChannelID),
 		ModelMappingChain:     optionalTrimmedStringPtr(input.ModelMappingChain),

backend/internal/service/gemini_messages_compat_service.go

@@ -1072,21 +1072,23 @@ func (s *GeminiMessagesCompatService) Forward(ctx context.Context, c *gin.Contex
 
 	// 图片生成计费
 	imageCount := 0
-	imageSize := s.extractImageSize(body)
+	imageInputSize := s.extractImageInputSize(body)
+	imageSize := normalizeOpenAIImageSizeTier(imageInputSize)
 	if isImageGenerationModel(originalModel) {
 		imageCount = 1
 	}
 
 	return &ForwardResult{
-		RequestID:     requestID,
+		RequestID:      requestID,
-		Usage:         *usage,
+		Usage:          *usage,
-		Model:         originalModel,
+		Model:          originalModel,
-		UpstreamModel: mappedModel,
+		UpstreamModel:  mappedModel,
-		Stream:        req.Stream,
+		Stream:         req.Stream,
-		Duration:      time.Since(startTime),
+		Duration:       time.Since(startTime),
-		FirstTokenMs:  firstTokenMs,
+		FirstTokenMs:   firstTokenMs,
-		ImageCount:    imageCount,
+		ImageCount:     imageCount,
-		ImageSize:     imageSize,
+		ImageSize:      imageSize,
+		ImageInputSize: imageInputSize,
 	}, nil
 }
 
@@ -1600,21 +1602,23 @@ func (s *GeminiMessagesCompatService) ForwardNative(ctx context.Context, c *gin.
 
 	// 图片生成计费
 	imageCount := 0
-	imageSize := s.extractImageSize(body)
+	imageInputSize := s.extractImageInputSize(body)
+	imageSize := normalizeOpenAIImageSizeTier(imageInputSize)
 	if isImageGenerationModel(originalModel) {
 		imageCount = 1
 	}
 
 	return &ForwardResult{
-		RequestID:     requestID,
+		RequestID:      requestID,
-		Usage:         *usage,
+		Usage:          *usage,
-		Model:         originalModel,
+		Model:          originalModel,
-		UpstreamModel: mappedModel,
+		UpstreamModel:  mappedModel,
-		Stream:        stream,
+		Stream:         stream,
-		Duration:      time.Since(startTime),
+		Duration:       time.Since(startTime),
-		FirstTokenMs:  firstTokenMs,
+		FirstTokenMs:   firstTokenMs,
-		ImageCount:    imageCount,
+		ImageCount:     imageCount,
-		ImageSize:     imageSize,
+		ImageSize:      imageSize,
+		ImageInputSize: imageInputSize,
 	}, nil
 }
 
@@ -3432,6 +3436,10 @@ func convertClaudeGenerationConfig(req map[string]any) map[string]any {
 
 // extractImageSize 从 Gemini 请求中提取 image_size 参数
 func (s *GeminiMessagesCompatService) extractImageSize(body []byte) string {
+	return normalizeOpenAIImageSizeTier(s.extractImageInputSize(body))
+}
+
+func (s *GeminiMessagesCompatService) extractImageInputSize(body []byte) string {
 	var req struct {
 		GenerationConfig *struct {
 			ImageConfig *struct {
@@ -3440,15 +3448,12 @@ func (s *GeminiMessagesCompatService) extractImageSize(body []byte) string {
 		} `json:"generationConfig"`
 	}
 	if err := json.Unmarshal(body, &req); err != nil {
-		return "2K"
+		return ""
 	}
 
 	if req.GenerationConfig != nil && req.GenerationConfig.ImageConfig != nil {
-		size := strings.ToUpper(strings.TrimSpace(req.GenerationConfig.ImageConfig.ImageSize))
+		return strings.TrimSpace(req.GenerationConfig.ImageConfig.ImageSize)
-		if size == "1K" || size == "2K" || size == "4K" {
-			return size
-		}
 	}
 
-	return "2K"
+	return ""
 }

backend/internal/service/image_billing_size.go

@@ -0,0 +1,260 @@
+package service
+
+import (
+	"sort"
+	"strconv"
+	"strings"
+)
+
+const (
+	ImageBillingSize1K = "1K"
+	ImageBillingSize2K = "2K"
+	ImageBillingSize4K = "4K"
+
+	ImageSizeSourceOutput  = "output"
+	ImageSizeSourceInput   = "input"
+	ImageSizeSourceDefault = "default"
+	ImageSizeSourceLegacy  = "legacy"
+)
+
+type ImageBillingSizeResolution struct {
+	BillingSize string
+	InputSize   string
+	OutputSize  string
+	Source      string
+	Breakdown   map[string]int
+}
+
+func ClassifyImageBillingTier(size string) (string, bool) {
+	trimmed := strings.TrimSpace(size)
+	normalized := strings.ToLower(trimmed)
+	switch normalized {
+	case "", "auto":
+		return "", false
+	case "1k":
+		return ImageBillingSize1K, true
+	case "2k":
+		return ImageBillingSize2K, true
+	case "4k":
+		return ImageBillingSize4K, true
+	case "2048x2048", "2048x1152":
+		return ImageBillingSize2K, true
+	case "3840x2160", "2160x3840":
+		return ImageBillingSize4K, true
+	}
+
+	width, height, ok := parseImageBillingDimensions(trimmed)
+	if !ok {
+		return "", false
+	}
+	maxEdge := width
+	if height > maxEdge {
+		maxEdge = height
+	}
+	switch {
+	case maxEdge <= 1024:
+		return ImageBillingSize1K, true
+	case maxEdge <= 2048:
+		return ImageBillingSize2K, true
+	default:
+		return ImageBillingSize4K, true
+	}
+}
+
+func NormalizeImageBillingTierOrDefault(size string) string {
+	if tier, ok := ClassifyImageBillingTier(size); ok {
+		return tier
+	}
+	return ImageBillingSize2K
+}
+
+func ResolveImageBillingSize(inputSize string, outputSizes []string) ImageBillingSizeResolution {
+	inputSize = strings.TrimSpace(inputSize)
+	outputSizes = compactTrimmedStrings(outputSizes)
+
+	breakdown := map[string]int{}
+	outputSize := firstDisplayImageOutputSize(outputSizes)
+	outputTier := ""
+	for _, output := range outputSizes {
+		tier, ok := ClassifyImageBillingTier(output)
+		if !ok {
+			continue
+		}
+		breakdown[tier]++
+		if imageTierRank(tier) > imageTierRank(outputTier) {
+			outputTier = tier
+		}
+	}
+	if outputTier != "" {
+		return ImageBillingSizeResolution{
+			BillingSize: outputTier,
+			InputSize:   inputSize,
+			OutputSize:  outputSize,
+			Source:      ImageSizeSourceOutput,
+			Breakdown:   normalizeImageSizeBreakdown(breakdown),
+		}
+	}
+
+	if tier, ok := ClassifyImageBillingTier(inputSize); ok {
+		return ImageBillingSizeResolution{
+			BillingSize: tier,
+			InputSize:   inputSize,
+			OutputSize:  outputSize,
+			Source:      ImageSizeSourceInput,
+		}
+	}
+
+	return ImageBillingSizeResolution{
+		BillingSize: ImageBillingSize2K,
+		InputSize:   inputSize,
+		OutputSize:  outputSize,
+		Source:      ImageSizeSourceDefault,
+	}
+}
+
+func ApplyOpenAIImageBillingResolution(result *OpenAIForwardResult) {
+	if result == nil || result.ImageCount <= 0 {
+		return
+	}
+	inputSize := strings.TrimSpace(result.ImageInputSize)
+	if inputSize == "" && strings.TrimSpace(result.ImageSize) != ImageBillingSize2K {
+		inputSize = strings.TrimSpace(result.ImageSize)
+	}
+	outputSizes := result.ImageOutputSizes
+	if len(outputSizes) == 0 && strings.TrimSpace(result.ImageOutputSize) != "" {
+		outputSizes = []string{result.ImageOutputSize}
+	}
+	resolved := ResolveImageBillingSize(inputSize, outputSizes)
+	applyImageBillingResolution(
+		&result.ImageSize,
+		&result.ImageInputSize,
+		&result.ImageOutputSize,
+		&result.ImageSizeSource,
+		&result.ImageSizeBreakdown,
+		resolved,
+	)
+}
+
+func ApplyForwardImageBillingResolution(result *ForwardResult) {
+	if result == nil || result.ImageCount <= 0 {
+		return
+	}
+	inputSize := strings.TrimSpace(result.ImageInputSize)
+	if inputSize == "" && strings.TrimSpace(result.ImageSize) != ImageBillingSize2K {
+		inputSize = strings.TrimSpace(result.ImageSize)
+	}
+	outputSizes := result.ImageOutputSizes
+	if len(outputSizes) == 0 && strings.TrimSpace(result.ImageOutputSize) != "" {
+		outputSizes = []string{result.ImageOutputSize}
+	}
+	resolved := ResolveImageBillingSize(inputSize, outputSizes)
+	applyImageBillingResolution(
+		&result.ImageSize,
+		&result.ImageInputSize,
+		&result.ImageOutputSize,
+		&result.ImageSizeSource,
+		&result.ImageSizeBreakdown,
+		resolved,
+	)
+}
+
+func applyImageBillingResolution(
+	billingSize *string,
+	inputSize *string,
+	outputSize *string,
+	source *string,
+	breakdown *map[string]int,
+	resolved ImageBillingSizeResolution,
+) {
+	*billingSize = resolved.BillingSize
+	*inputSize = resolved.InputSize
+	*outputSize = resolved.OutputSize
+	*source = resolved.Source
+	*breakdown = resolved.Breakdown
+}
+
+func parseImageBillingDimensions(size string) (int, int, bool) {
+	parts := strings.Split(strings.ToLower(strings.TrimSpace(size)), "x")
+	if len(parts) != 2 {
+		return 0, 0, false
+	}
+	width, err := strconv.Atoi(strings.TrimSpace(parts[0]))
+	if err != nil {
+		return 0, 0, false
+	}
+	height, err := strconv.Atoi(strings.TrimSpace(parts[1]))
+	if err != nil {
+		return 0, 0, false
+	}
+	if width <= 0 || height <= 0 {
+		return 0, 0, false
+	}
+	return width, height, true
+}
+
+func compactTrimmedStrings(values []string) []string {
+	if len(values) == 0 {
+		return nil
+	}
+	out := make([]string, 0, len(values))
+	for _, value := range values {
+		trimmed := strings.TrimSpace(value)
+		if trimmed != "" {
+			out = append(out, trimmed)
+		}
+	}
+	return out
+}
+
+func firstDisplayImageOutputSize(outputSizes []string) string {
+	for _, output := range outputSizes {
+		if trimmed := strings.TrimSpace(output); trimmed != "" {
+			return trimmed
+		}
+	}
+	return ""
+}
+
+func imageTierRank(tier string) int {
+	switch strings.ToUpper(strings.TrimSpace(tier)) {
+	case ImageBillingSize1K:
+		return 1
+	case ImageBillingSize2K:
+		return 2
+	case ImageBillingSize4K:
+		return 3
+	default:
+		return 0
+	}
+}
+
+func normalizeImageSizeBreakdown(in map[string]int) map[string]int {
+	if len(in) == 0 {
+		return nil
+	}
+	out := make(map[string]int, len(in))
+	for _, tier := range []string{ImageBillingSize1K, ImageBillingSize2K, ImageBillingSize4K} {
+		if count := in[tier]; count > 0 {
+			out[tier] = count
+		}
+	}
+	if len(out) == 0 {
+		return nil
+	}
+	return out
+}
+
+func SortedImageBillingBreakdownKeys(breakdown map[string]int) []string {
+	keys := make([]string, 0, len(breakdown))
+	for key := range breakdown {
+		keys = append(keys, key)
+	}
+	sort.Slice(keys, func(i, j int) bool {
+		left, right := imageTierRank(keys[i]), imageTierRank(keys[j])
+		if left == right {
+			return keys[i] < keys[j]
+		}
+		return left < right
+	})
+	return keys
+}

backend/internal/service/image_billing_size_test.go

@@ -0,0 +1,110 @@
+package service
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestClassifyImageBillingTier(t *testing.T) {
+	tests := []struct {
+		name     string
+		size     string
+		wantTier string
+		wantOK   bool
+	}{
+		{name: "explicit 2k square", size: "2048x2048", wantTier: "2K", wantOK: true},
+		{name: "explicit 2k landscape", size: "2048x1152", wantTier: "2K", wantOK: true},
+		{name: "explicit 4k landscape", size: "3840x2160", wantTier: "4K", wantOK: true},
+		{name: "explicit 4k portrait", size: "2160x3840", wantTier: "4K", wantOK: true},
+		{name: "long edge 1k", size: "1024X768", wantTier: "1K", wantOK: true},
+		{name: "long edge 2k", size: "1280x768", wantTier: "2K", wantOK: true},
+		{name: "long edge 4k", size: "2560x1600", wantTier: "4K", wantOK: true},
+		{name: "tier string 1k", size: "1k", wantTier: "1K", wantOK: true},
+		{name: "empty", size: "", wantOK: false},
+		{name: "auto", size: "auto", wantOK: false},
+		{name: "invalid", size: "not-a-size", wantOK: false},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			gotTier, gotOK := ClassifyImageBillingTier(tt.size)
+			require.Equal(t, tt.wantOK, gotOK)
+			require.Equal(t, tt.wantTier, gotTier)
+		})
+	}
+}
+
+func TestResolveImageBillingSize(t *testing.T) {
+	tests := []struct {
+		name          string
+		inputSize     string
+		outputSizes   []string
+		wantBilling   string
+		wantOutput    string
+		wantSource    string
+		wantBreakdown map[string]int
+	}{
+		{
+			name:          "output wins over input",
+			inputSize:     "1024x1024",
+			outputSizes:   []string{"3840x2160"},
+			wantBilling:   "4K",
+			wantOutput:    "3840x2160",
+			wantSource:    ImageSizeSourceOutput,
+			wantBreakdown: map[string]int{"4K": 1},
+		},
+		{
+			name:        "input fallback",
+			inputSize:   "1024x1024",
+			wantBilling: "1K",
+			wantSource:  ImageSizeSourceInput,
+		},
+		{
+			name:        "auto defaults",
+			inputSize:   "auto",
+			wantBilling: "2K",
+			wantSource:  ImageSizeSourceDefault,
+		},
+		{
+			name:        "empty defaults",
+			inputSize:   "",
+			wantBilling: "2K",
+			wantSource:  ImageSizeSourceDefault,
+		},
+		{
+			name:        "invalid defaults",
+			inputSize:   "largest",
+			wantBilling: "2K",
+			wantSource:  ImageSizeSourceDefault,
+		},
+		{
+			name:          "mixed output chooses highest tier",
+			inputSize:     "1024x1024",
+			outputSizes:   []string{"1024x1024", "3840x2160", "1280x720"},
+			wantBilling:   "4K",
+			wantOutput:    "1024x1024",
+			wantSource:    ImageSizeSourceOutput,
+			wantBreakdown: map[string]int{"1K": 1, "2K": 1, "4K": 1},
+		},
+		{
+			name:        "unparseable output falls back to parseable input",
+			inputSize:   "2048x1152",
+			outputSizes: []string{"auto"},
+			wantBilling: "2K",
+			wantOutput:  "auto",
+			wantSource:  ImageSizeSourceInput,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got := ResolveImageBillingSize(tt.inputSize, tt.outputSizes)
+			require.Equal(t, tt.wantBilling, got.BillingSize)
+			require.Equal(t, tt.inputSize, got.InputSize)
+			require.Equal(t, tt.wantOutput, got.OutputSize)
+			require.Equal(t, tt.wantSource, got.Source)
+			require.Equal(t, tt.wantBreakdown, got.Breakdown)
+		})
+	}
+}

backend/internal/service/image_generation_intent.go

@@ -170,7 +170,21 @@ func cloneRequestMapForImageIntent(body []byte) map[string]any {
 	return out
 }
 
+type OpenAIResponsesImageBillingConfig struct {
+	Model     string
+	SizeTier  string
+	InputSize string
+}
+
 func resolveOpenAIResponsesImageBillingConfig(reqBody map[string]any, fallbackModel string) (string, string, error) {
+	cfg, err := resolveOpenAIResponsesImageBillingConfigDetailed(reqBody, fallbackModel)
+	if err != nil {
+		return "", "", err
+	}
+	return cfg.Model, cfg.SizeTier, nil
+}
+
+func resolveOpenAIResponsesImageBillingConfigDetailed(reqBody map[string]any, fallbackModel string) (OpenAIResponsesImageBillingConfig, error) {
 	imageModel := ""
 	imageSize := ""
 	hasImageTool := false
@@ -203,12 +217,24 @@ func resolveOpenAIResponsesImageBillingConfig(reqBody map[string]any, fallbackMo
 		imageModel = strings.TrimSpace(fallbackModel)
 	}
 	sizeTier := normalizeOpenAIImageSizeTier(imageSize)
-	return imageModel, sizeTier, nil
+	return OpenAIResponsesImageBillingConfig{
+		Model:     imageModel,
+		SizeTier:  sizeTier,
+		InputSize: imageSize,
+	}, nil
 }
 
 func resolveOpenAIResponsesImageBillingConfigFromBody(body []byte, fallbackModel string) (string, string, error) {
+	cfg, err := resolveOpenAIResponsesImageBillingConfigDetailedFromBody(body, fallbackModel)
+	if err != nil {
+		return "", "", err
+	}
+	return cfg.Model, cfg.SizeTier, nil
+}
+
+func resolveOpenAIResponsesImageBillingConfigDetailedFromBody(body []byte, fallbackModel string) (OpenAIResponsesImageBillingConfig, error) {
 	reqBody := cloneRequestMapForImageIntent(body)
-	return resolveOpenAIResponsesImageBillingConfig(reqBody, fallbackModel)
+	return resolveOpenAIResponsesImageBillingConfigDetailed(reqBody, fallbackModel)
 }
 
 func isOpenAIImageBillingModelAlias(model string) bool {

backend/internal/service/image_generation_intent_test.go

@@ -140,9 +140,10 @@ func TestResolveOpenAIResponsesImageBillingConfigDoesNotRejectUnknownSizes(t *te
 func TestOpenAIImageOutputCounterDeduplicatesFinalImages(t *testing.T) {
 	counter := newOpenAIImageOutputCounter()
 	counter.AddSSEData([]byte(`{"type":"response.image_generation_call.partial_image","partial_image_b64":"abc"}`))
-	counter.AddSSEData([]byte(`{"type":"response.output_item.done","item":{"id":"ig_1","type":"image_generation_call","result":"final-a"}}`))
+	counter.AddSSEData([]byte(`{"type":"response.output_item.done","item":{"id":"ig_1","type":"image_generation_call","result":"final-a","size":"1024x1024"}}`))
-	counter.AddSSEData([]byte(`{"type":"response.completed","response":{"output":[{"id":"ig_1","type":"image_generation_call","result":"final-a"},{"id":"ig_2","type":"image_generation_call","result":"final-b"}]}}`))
+	counter.AddSSEData([]byte(`{"type":"response.completed","response":{"output":[{"id":"ig_1","type":"image_generation_call","result":"final-a"},{"id":"ig_2","type":"image_generation_call","result":"final-b","size":"3840x2160"}]}}`))
 	require.Equal(t, 2, counter.Count())
+	require.Equal(t, []string{"1024x1024", "3840x2160"}, counter.Sizes())
 }
 
 func TestOpenAIImageOutputCounterCountsImagesAPIStreamShapes(t *testing.T) {
@@ -182,3 +183,36 @@ func TestOpenAIImageOutputCounterFallsBackForInvalidMultilineSSEBody(t *testing.
 	)
 	require.Equal(t, 2, counter.Count())
 }
+
+func TestCollectOpenAIResponseImageOutputSizesFromJSONBytes(t *testing.T) {
+	body := []byte(`{
+		"output": [
+			{"id":"ig_1","type":"image_generation_call","result":"final-a","size":"3840x2160"},
+			{"id":"ig_2","type":"image_generation_call","result":"final-b","size":"1024x1024"}
+		]
+	}`)
+
+	require.Equal(t, 2, countOpenAIResponseImageOutputsFromJSONBytes(body))
+	require.Equal(t, []string{"3840x2160", "1024x1024"}, collectOpenAIResponseImageOutputSizesFromJSONBytes(body))
+}
+
+func TestCollectOpenAIResponseImageOutputSizesFromImagesAPIData(t *testing.T) {
+	body := []byte(`{
+		"data": [
+			{"b64_json":"final-a","size":"2048x1152"},
+			{"b64_json":"final-b","size":"2048x1152"}
+		]
+	}`)
+
+	require.Equal(t, 2, countOpenAIResponseImageOutputsFromJSONBytes(body))
+	require.Equal(t, []string{"2048x1152", "2048x1152"}, collectOpenAIResponseImageOutputSizesFromJSONBytes(body))
+}
+
+func TestCollectOpenAIImageOutputSizesFromSSEBody(t *testing.T) {
+	body := "data: {\"type\":\"response.output_item.done\",\"item\":{\"id\":\"ig_1\",\"type\":\"image_generation_call\",\"result\":\"final-a\",\"size\":\"3840x2160\"}}\n\n" +
+		"data: {\"type\":\"response.completed\",\"response\":{\"output\":[{\"id\":\"ig_1\",\"type\":\"image_generation_call\",\"result\":\"final-a\"},{\"id\":\"ig_2\",\"type\":\"image_generation_call\",\"result\":\"final-b\",\"size\":\"1024x1024\"}]}}\n\n" +
+		"data: [DONE]\n\n"
+
+	require.Equal(t, 2, countOpenAIImageOutputsFromSSEBody(body))
+	require.Equal(t, []string{"3840x2160", "1024x1024"}, collectOpenAIImageOutputSizesFromSSEBody(body))
+}

backend/internal/service/image_output_accounting.go

@@ -10,12 +10,18 @@ import (
 
 type openAIImageOutputCounter struct {
 	seen         map[string]struct{}
+	seenSizes    map[string]string
+	seenOrder    []string
+	dataSizes    []string
 	count        int
 	maxDataCount int
 }
 
 func newOpenAIImageOutputCounter() *openAIImageOutputCounter {
-	return &openAIImageOutputCounter{seen: make(map[string]struct{})}
+	return &openAIImageOutputCounter{
+		seen:      make(map[string]struct{}),
+		seenSizes: make(map[string]string),
+	}
 }
 
 func (c *openAIImageOutputCounter) Count() int {
@@ -28,6 +34,25 @@ func (c *openAIImageOutputCounter) Count() int {
 	return c.count
 }
 
+func (c *openAIImageOutputCounter) Sizes() []string {
+	if c == nil {
+		return nil
+	}
+	sizes := make([]string, 0, len(c.seenOrder)+len(c.dataSizes))
+	for _, key := range c.seenOrder {
+		if size := strings.TrimSpace(c.seenSizes[key]); size != "" {
+			sizes = append(sizes, size)
+		}
+	}
+	if len(sizes) == 0 && len(c.dataSizes) > 0 {
+		sizes = append(sizes, c.dataSizes...)
+	}
+	if len(sizes) == 0 {
+		return nil
+	}
+	return sizes
+}
+
 func (c *openAIImageOutputCounter) AddJSONResponse(body []byte) {
 	if c == nil || len(body) == 0 || !gjson.ValidBytes(body) {
 		return
@@ -73,10 +98,20 @@ func (c *openAIImageOutputCounter) addDataArray(data gjson.Result) {
 	if !data.IsArray() {
 		return
 	}
-	count := len(data.Array())
+	items := data.Array()
+	count := len(items)
 	if count > c.maxDataCount {
 		c.maxDataCount = count
 	}
+	sizes := make([]string, 0, len(items))
+	for _, item := range items {
+		if size := strings.TrimSpace(item.Get("size").String()); size != "" {
+			sizes = append(sizes, size)
+		}
+	}
+	if len(sizes) > 0 {
+		c.dataSizes = sizes
+	}
 }
 
 func (c *openAIImageOutputCounter) addOutputArray(output gjson.Result) {
@@ -120,10 +155,18 @@ func (c *openAIImageOutputCounter) addImageOutputItem(item gjson.Result) {
 	if key == "" {
 		return
 	}
+	size := strings.TrimSpace(item.Get("size").String())
 	if _, exists := c.seen[key]; exists {
+		if size != "" && strings.TrimSpace(c.seenSizes[key]) == "" {
+			c.seenSizes[key] = size
+		}
 		return
 	}
 	c.seen[key] = struct{}{}
+	c.seenOrder = append(c.seenOrder, key)
+	if size != "" {
+		c.seenSizes[key] = size
+	}
 	c.count++
 }
 
@@ -142,8 +185,20 @@ func countOpenAIResponseImageOutputsFromJSONBytes(body []byte) int {
 	return counter.Count()
 }
 
+func collectOpenAIResponseImageOutputSizesFromJSONBytes(body []byte) []string {
+	counter := newOpenAIImageOutputCounter()
+	counter.AddJSONResponse(body)
+	return counter.Sizes()
+}
+
 func countOpenAIImageOutputsFromSSEBody(body string) int {
 	counter := newOpenAIImageOutputCounter()
 	counter.AddSSEBody(body)
 	return counter.Count()
 }
+
+func collectOpenAIImageOutputSizesFromSSEBody(body string) []string {
+	counter := newOpenAIImageOutputCounter()
+	counter.AddSSEBody(body)
+	return counter.Sizes()
+}

backend/internal/service/openai_gateway_record_usage_test.go

@@ -1320,6 +1320,93 @@ func TestOpenAIGatewayServiceRecordUsage_ImageOnlyUsageStillPersists(t *testing.
 	require.Equal(t, string(BillingModeImage), *usageRepo.lastLog.BillingMode)
 }
 
+func TestOpenAIGatewayServiceRecordUsage_EmptyImageSizeDefaultsBeforeBillingAndPersistence(t *testing.T) {
+	imagePrice2K := 0.31
+	groupID := int64(1201)
+	usageRepo := &openAIRecordUsageLogRepoStub{inserted: true}
+	svc := newOpenAIRecordUsageServiceForTest(usageRepo, &openAIRecordUsageUserRepoStub{}, &openAIRecordUsageSubRepoStub{}, nil)
+
+	err := svc.RecordUsage(context.Background(), &OpenAIRecordUsageInput{
+		Result: &OpenAIForwardResult{
+			RequestID:  "resp_image_default_size",
+			Model:      "gpt-image-2",
+			ImageCount: 2,
+			ImageSize:  "",
+			Duration:   time.Second,
+		},
+		APIKey: &APIKey{
+			ID:      11201,
+			GroupID: i64p(groupID),
+			Group: &Group{
+				ID:             groupID,
+				RateMultiplier: 1.0,
+				ImagePrice2K:   &imagePrice2K,
+			},
+		},
+		User:    &User{ID: 21201},
+		Account: &Account{ID: 31201},
+	})
+
+	require.NoError(t, err)
+	require.NotNil(t, usageRepo.lastLog)
+	require.Equal(t, 2, usageRepo.lastLog.ImageCount)
+	require.NotNil(t, usageRepo.lastLog.ImageSize)
+	require.Equal(t, ImageBillingSize2K, *usageRepo.lastLog.ImageSize)
+	require.NotNil(t, usageRepo.lastLog.ImageSizeSource)
+	require.Equal(t, ImageSizeSourceDefault, *usageRepo.lastLog.ImageSizeSource)
+	require.Nil(t, usageRepo.lastLog.ImageInputSize)
+	require.Nil(t, usageRepo.lastLog.ImageOutputSize)
+	require.InDelta(t, 0.62, usageRepo.lastLog.TotalCost, 1e-12)
+	require.InDelta(t, 0.62, usageRepo.lastLog.ActualCost, 1e-12)
+	require.NotNil(t, usageRepo.lastLog.BillingMode)
+	require.Equal(t, string(BillingModeImage), *usageRepo.lastLog.BillingMode)
+}
+
+func TestOpenAIGatewayServiceRecordUsage_OutputImageSizeWinsBeforeBillingAndPersistence(t *testing.T) {
+	imagePrice1K := 0.11
+	imagePrice4K := 0.44
+	groupID := int64(1202)
+	usageRepo := &openAIRecordUsageLogRepoStub{inserted: true}
+	svc := newOpenAIRecordUsageServiceForTest(usageRepo, &openAIRecordUsageUserRepoStub{}, &openAIRecordUsageSubRepoStub{}, nil)
+
+	err := svc.RecordUsage(context.Background(), &OpenAIRecordUsageInput{
+		Result: &OpenAIForwardResult{
+			RequestID:        "resp_image_output_size",
+			Model:            "gpt-image-2",
+			ImageCount:       1,
+			ImageInputSize:   "1024x1024",
+			ImageOutputSizes: []string{"3840x2160"},
+			Duration:         time.Second,
+		},
+		APIKey: &APIKey{
+			ID:      11202,
+			GroupID: i64p(groupID),
+			Group: &Group{
+				ID:             groupID,
+				RateMultiplier: 1.0,
+				ImagePrice1K:   &imagePrice1K,
+				ImagePrice4K:   &imagePrice4K,
+			},
+		},
+		User:    &User{ID: 21202},
+		Account: &Account{ID: 31202},
+	})
+
+	require.NoError(t, err)
+	require.NotNil(t, usageRepo.lastLog)
+	require.NotNil(t, usageRepo.lastLog.ImageSize)
+	require.Equal(t, ImageBillingSize4K, *usageRepo.lastLog.ImageSize)
+	require.NotNil(t, usageRepo.lastLog.ImageInputSize)
+	require.Equal(t, "1024x1024", *usageRepo.lastLog.ImageInputSize)
+	require.NotNil(t, usageRepo.lastLog.ImageOutputSize)
+	require.Equal(t, "3840x2160", *usageRepo.lastLog.ImageOutputSize)
+	require.NotNil(t, usageRepo.lastLog.ImageSizeSource)
+	require.Equal(t, ImageSizeSourceOutput, *usageRepo.lastLog.ImageSizeSource)
+	require.Equal(t, map[string]int{ImageBillingSize4K: 1}, usageRepo.lastLog.ImageSizeBreakdown)
+	require.InDelta(t, 0.44, usageRepo.lastLog.TotalCost, 1e-12)
+	require.InDelta(t, 0.44, usageRepo.lastLog.ActualCost, 1e-12)
+}
+
 func TestOpenAIGatewayServiceRecordUsage_ImageUsesPerImageBillingEvenWithUsageTokens(t *testing.T) {
 	imagePrice := 0.02
 	groupID := int64(12)
@@ -1641,3 +1728,42 @@ func TestGatewayServiceCalculateRecordUsageCost_ChannelImageBillingUsesSizeTier(
 	require.InDelta(t, 0.80, cost.TotalCost, 1e-12)
 	require.InDelta(t, 0.80, cost.ActualCost, 1e-12)
 }
+
+func TestGatewayServiceCalculateRecordUsageCost_ChannelImageBillingNormalizesMissingSizeTier(t *testing.T) {
+	groupID := int64(128)
+	defaultPrice := 0.10
+	price2K := 0.22
+	cache := newEmptyChannelCache()
+	cache.pricingByGroupModel[channelModelKey{groupID: groupID, model: "gemini-image"}] = &ChannelModelPricing{
+		BillingMode:     BillingModeImage,
+		PerRequestPrice: &defaultPrice,
+		Intervals: []PricingInterval{{
+			TierLabel:       "2K",
+			PerRequestPrice: &price2K,
+		}},
+	}
+	cache.channelByGroupID[groupID] = &Channel{ID: groupID, Status: StatusActive}
+	cache.loadedAt = time.Now()
+	channelService := &ChannelService{}
+	channelService.cache.Store(cache)
+
+	svc := &GatewayService{
+		billingService: NewBillingService(&config.Config{}, nil),
+		resolver:       NewModelPricingResolver(channelService, NewBillingService(&config.Config{}, nil)),
+	}
+
+	cost := svc.calculateRecordUsageCost(
+		context.Background(),
+		&ForwardResult{Model: "gemini-image", ImageCount: 2, ImageSize: ""},
+		&APIKey{GroupID: i64p(groupID), Group: &Group{ID: groupID}},
+		"gemini-image",
+		1.0,
+		1.0,
+		nil,
+	)
+
+	require.NotNil(t, cost)
+	require.Equal(t, string(BillingModeImage), cost.BillingMode)
+	require.InDelta(t, 0.44, cost.TotalCost, 1e-12)
+	require.InDelta(t, 0.44, cost.ActualCost, 1e-12)
+}

backend/internal/service/openai_gateway_service.go

@@ -228,14 +228,19 @@ type OpenAIForwardResult struct {
 	ServiceTier *string
 	// ReasoningEffort is extracted from request body (reasoning.effort) or derived from model suffix.
 	// Stored for usage records display; nil means not provided / not applicable.
-	ReasoningEffort *string
+	ReasoningEffort    *string
-	Stream          bool
+	Stream             bool
-	OpenAIWSMode    bool
+	OpenAIWSMode       bool
-	ResponseHeaders http.Header
+	ResponseHeaders    http.Header
-	Duration        time.Duration
+	Duration           time.Duration
-	FirstTokenMs    *int
+	FirstTokenMs       *int
-	ImageCount      int
+	ImageCount         int
-	ImageSize       string
+	ImageSize          string
+	ImageInputSize     string
+	ImageOutputSize    string
+	ImageOutputSizes   []string
+	ImageSizeSource    string
+	ImageSizeBreakdown map[string]int
 }
 
 type OpenAIWSRetryMetricsSnapshot struct {
@@ -2416,9 +2421,10 @@ func (s *OpenAIGatewayService) Forward(ctx context.Context, c *gin.Context, acco
 	}
 	imageBillingModel := ""
 	imageSizeTier := ""
+	imageInputSize := ""
 	if IsImageGenerationIntentMap(openAIResponsesEndpoint, reqModel, reqBody) {
 		var imageCfgErr error
-		imageBillingModel, imageSizeTier, imageCfgErr = resolveOpenAIResponsesImageBillingConfig(reqBody, billingModel)
+		imageCfg, imageCfgErr := resolveOpenAIResponsesImageBillingConfigDetailed(reqBody, billingModel)
 		if imageCfgErr != nil {
 			setOpsUpstreamError(c, http.StatusBadRequest, imageCfgErr.Error(), "")
 			c.JSON(http.StatusBadRequest, gin.H{
@@ -2430,6 +2436,9 @@ func (s *OpenAIGatewayService) Forward(ctx context.Context, c *gin.Context, acco
 			})
 			return nil, imageCfgErr
 		}
+		imageBillingModel = imageCfg.Model
+		imageSizeTier = imageCfg.SizeTier
+		imageInputSize = imageCfg.InputSize
 	}
 
 	// Re-serialize body only if modified
@@ -2671,6 +2680,7 @@ func (s *OpenAIGatewayService) Forward(ctx context.Context, c *gin.Context, acco
 			wsResult.UpstreamModel = upstreamModel
 			if wsResult.ImageCount > 0 {
 				wsResult.ImageSize = imageSizeTier
+				wsResult.ImageInputSize = imageInputSize
 				wsResult.BillingModel = imageBillingModel
 			}
 			return wsResult, nil
@@ -2777,6 +2787,7 @@ func (s *OpenAIGatewayService) Forward(ctx context.Context, c *gin.Context, acco
 		var usage *OpenAIUsage
 		var firstTokenMs *int
 		imageCount := 0
+		var imageOutputSizes []string
 		if reqStream {
 			streamResult, err := s.handleStreamingResponse(ctx, resp, c, account, startTime, originalModel, upstreamModel)
 			if err != nil {
@@ -2785,6 +2796,7 @@ func (s *OpenAIGatewayService) Forward(ctx context.Context, c *gin.Context, acco
 			usage = streamResult.usage
 			firstTokenMs = streamResult.firstTokenMs
 			imageCount = streamResult.imageCount
+			imageOutputSizes = streamResult.imageOutputSizes
 		} else {
 			nonStreamResult, err := s.handleNonStreamingResponse(ctx, resp, c, account, originalModel, upstreamModel)
 			if err != nil {
@@ -2792,6 +2804,7 @@ func (s *OpenAIGatewayService) Forward(ctx context.Context, c *gin.Context, acco
 			}
 			usage = nonStreamResult.usage
 			imageCount = nonStreamResult.imageCount
+			imageOutputSizes = nonStreamResult.imageOutputSizes
 		}
 
 		// Extract and save Codex usage snapshot from response headers (for OAuth accounts)
@@ -2823,6 +2836,8 @@ func (s *OpenAIGatewayService) Forward(ctx context.Context, c *gin.Context, acco
 		if imageCount > 0 {
 			forwardResult.ImageCount = imageCount
 			forwardResult.ImageSize = imageSizeTier
+			forwardResult.ImageInputSize = imageInputSize
+			forwardResult.ImageOutputSizes = imageOutputSizes
 			forwardResult.BillingModel = imageBillingModel
 		}
 		return forwardResult, nil
@@ -2927,9 +2942,10 @@ func (s *OpenAIGatewayService) forwardOpenAIPassthrough(
 	}
 	imageBillingModel := ""
 	imageSizeTier := ""
+	imageInputSize := ""
 	if IsImageGenerationIntent(openAIResponsesEndpoint, reqModel, body) {
 		var imageCfgErr error
-		imageBillingModel, imageSizeTier, imageCfgErr = resolveOpenAIResponsesImageBillingConfigFromBody(body, reqModel)
+		imageCfg, imageCfgErr := resolveOpenAIResponsesImageBillingConfigDetailedFromBody(body, reqModel)
 		if imageCfgErr != nil {
 			setOpsUpstreamError(c, http.StatusBadRequest, imageCfgErr.Error(), "")
 			c.JSON(http.StatusBadRequest, gin.H{
@@ -2941,6 +2957,9 @@ func (s *OpenAIGatewayService) forwardOpenAIPassthrough(
 			})
 			return nil, imageCfgErr
 		}
+		imageBillingModel = imageCfg.Model
+		imageSizeTier = imageCfg.SizeTier
+		imageInputSize = imageCfg.InputSize
 	}
 
 	logger.LegacyPrintf("service.openai_gateway",
@@ -3026,6 +3045,7 @@ func (s *OpenAIGatewayService) forwardOpenAIPassthrough(
 	var usage *OpenAIUsage
 	var firstTokenMs *int
 	imageCount := 0
+	var imageOutputSizes []string
 	if reqStream {
 		result, err := s.handleStreamingResponsePassthrough(ctx, resp, c, account, startTime, reqModel, upstreamPassthroughModel)
 		if err != nil {
@@ -3034,6 +3054,7 @@ func (s *OpenAIGatewayService) forwardOpenAIPassthrough(
 		usage = result.usage
 		firstTokenMs = result.firstTokenMs
 		imageCount = result.imageCount
+		imageOutputSizes = result.imageOutputSizes
 	} else {
 		result, err := s.handleNonStreamingResponsePassthrough(ctx, resp, c, reqModel, upstreamPassthroughModel)
 		if err != nil {
@@ -3041,6 +3062,7 @@ func (s *OpenAIGatewayService) forwardOpenAIPassthrough(
 		}
 		usage = result.usage
 		imageCount = result.imageCount
+		imageOutputSizes = result.imageOutputSizes
 	}
 
 	if snapshot := ParseCodexRateLimitHeaders(resp.Header); snapshot != nil {
@@ -3066,6 +3088,8 @@ func (s *OpenAIGatewayService) forwardOpenAIPassthrough(
 	if imageCount > 0 {
 		forwardResult.ImageCount = imageCount
 		forwardResult.ImageSize = imageSizeTier
+		forwardResult.ImageInputSize = imageInputSize
+		forwardResult.ImageOutputSizes = imageOutputSizes
 		forwardResult.BillingModel = imageBillingModel
 	}
 	return forwardResult, nil
@@ -3361,15 +3385,17 @@ func collectOpenAIPassthroughTimeoutHeaders(h http.Header) []string {
 }
 
 type openaiStreamingResultPassthrough struct {
-	usage        *OpenAIUsage
+	usage            *OpenAIUsage
-	firstTokenMs *int
+	firstTokenMs     *int
-	imageCount   int
+	imageCount       int
+	imageOutputSizes []string
 }
 
 type openaiNonStreamingResultPassthrough struct {
 	*OpenAIUsage
-	usage      *OpenAIUsage
+	usage            *OpenAIUsage
-	imageCount int
+	imageCount       int
+	imageOutputSizes []string
 }
 
 func openAIStreamClientOutputStarted(c *gin.Context, localStarted bool) bool {
@@ -3539,7 +3565,12 @@ func (s *OpenAIGatewayService) handleStreamingResponsePassthrough(
 
 	needModelReplace := strings.TrimSpace(originalModel) != "" && strings.TrimSpace(mappedModel) != "" && strings.TrimSpace(originalModel) != strings.TrimSpace(mappedModel)
 	resultWithUsage := func() *openaiStreamingResultPassthrough {
-		return &openaiStreamingResultPassthrough{usage: usage, firstTokenMs: firstTokenMs, imageCount: imageCounter.Count()}
+		return &openaiStreamingResultPassthrough{
+			usage:            usage,
+			firstTokenMs:     firstTokenMs,
+			imageCount:       imageCounter.Count(),
+			imageOutputSizes: imageCounter.Sizes(),
+		}
 	}
 
 	for scanner.Scan() {
@@ -3696,9 +3727,10 @@ func (s *OpenAIGatewayService) handleNonStreamingResponsePassthrough(
 	}
 	c.Data(resp.StatusCode, contentType, body)
 	return &openaiNonStreamingResultPassthrough{
-		OpenAIUsage: usage,
+		OpenAIUsage:      usage,
-		usage:       usage,
+		usage:            usage,
-		imageCount:  countOpenAIResponseImageOutputsFromJSONBytes(body),
+		imageCount:       countOpenAIResponseImageOutputsFromJSONBytes(body),
+		imageOutputSizes: collectOpenAIResponseImageOutputSizesFromJSONBytes(body),
 	}, nil
 }
 
@@ -3758,9 +3790,10 @@ func (s *OpenAIGatewayService) handlePassthroughSSEToJSON(resp *http.Response, c
 	c.Data(resp.StatusCode, contentType, body)
 
 	return &openaiNonStreamingResultPassthrough{
-		OpenAIUsage: usage,
+		OpenAIUsage:      usage,
-		usage:       usage,
+		usage:            usage,
-		imageCount:  countOpenAIImageOutputsFromSSEBody(bodyText),
+		imageCount:       countOpenAIImageOutputsFromSSEBody(bodyText),
+		imageOutputSizes: collectOpenAIImageOutputSizesFromSSEBody(bodyText),
 	}, nil
 }
 
@@ -4182,15 +4215,17 @@ func (s *OpenAIGatewayService) handleCompatErrorResponse(
 
 // openaiStreamingResult streaming response result
 type openaiStreamingResult struct {
-	usage        *OpenAIUsage
+	usage            *OpenAIUsage
-	firstTokenMs *int
+	firstTokenMs     *int
-	imageCount   int
+	imageCount       int
+	imageOutputSizes []string
 }
 
 type openaiNonStreamingResult struct {
 	*OpenAIUsage
-	usage      *OpenAIUsage
+	usage            *OpenAIUsage
-	imageCount int
+	imageCount       int
+	imageOutputSizes []string
 }
 
 func (s *OpenAIGatewayService) handleStreamingResponse(ctx context.Context, resp *http.Response, c *gin.Context, account *Account, startTime time.Time, originalModel, mappedModel string) (*openaiStreamingResult, error) {
@@ -4303,7 +4338,12 @@ func (s *OpenAIGatewayService) handleStreamingResponse(ctx context.Context, resp
 
 	needModelReplace := originalModel != mappedModel
 	resultWithUsage := func() *openaiStreamingResult {
-		return &openaiStreamingResult{usage: usage, firstTokenMs: firstTokenMs, imageCount: imageCounter.Count()}
+		return &openaiStreamingResult{
+			usage:            usage,
+			firstTokenMs:     firstTokenMs,
+			imageCount:       imageCounter.Count(),
+			imageOutputSizes: imageCounter.Sizes(),
+		}
 	}
 	finalizeStream := func() (*openaiStreamingResult, error) {
 		if !sawTerminalEvent {
@@ -4711,9 +4751,10 @@ func (s *OpenAIGatewayService) handleNonStreamingResponse(ctx context.Context, r
 	c.Data(resp.StatusCode, contentType, body)
 
 	return &openaiNonStreamingResult{
-		OpenAIUsage: usage,
+		OpenAIUsage:      usage,
-		usage:       usage,
+		usage:            usage,
-		imageCount:  countOpenAIResponseImageOutputsFromJSONBytes(body),
+		imageCount:       countOpenAIResponseImageOutputsFromJSONBytes(body),
+		imageOutputSizes: collectOpenAIResponseImageOutputSizesFromJSONBytes(body),
 	}, nil
 }
 
@@ -4775,9 +4816,10 @@ func (s *OpenAIGatewayService) handleSSEToJSON(resp *http.Response, c *gin.Conte
 	c.Data(resp.StatusCode, contentType, body)
 
 	return &openaiNonStreamingResult{
-		OpenAIUsage: usage,
+		OpenAIUsage:      usage,
-		usage:       usage,
+		usage:            usage,
-		imageCount:  countOpenAIImageOutputsFromSSEBody(bodyText),
+		imageCount:       countOpenAIImageOutputsFromSSEBody(bodyText),
+		imageOutputSizes: collectOpenAIImageOutputSizesFromSSEBody(bodyText),
 	}, nil
 }
 
@@ -5216,6 +5258,7 @@ func (s *OpenAIGatewayService) RecordUsage(ctx context.Context, input *OpenAIRec
 	user := input.User
 	account := input.Account
 	subscription := input.Subscription
+	ApplyOpenAIImageBillingResolution(result)
 
 	// 计算实际的新输入token（减去缓存读取的token）
 	// 因为 input_tokens 包含了 cache_read_tokens，而缓存读取的token不应按输入价格计费
@@ -5325,6 +5368,10 @@ func (s *OpenAIGatewayService) RecordUsage(ctx context.Context, input *OpenAIRec
 		ImageOutputTokens:   result.Usage.ImageOutputTokens,
 		ImageCount:          result.ImageCount,
 		ImageSize:           optionalTrimmedStringPtr(result.ImageSize),
+		ImageInputSize:      optionalTrimmedStringPtr(result.ImageInputSize),
+		ImageOutputSize:     optionalTrimmedStringPtr(result.ImageOutputSize),
+		ImageSizeSource:     optionalTrimmedStringPtr(result.ImageSizeSource),
+		ImageSizeBreakdown:  result.ImageSizeBreakdown,
 	}
 	if cost != nil {
 		usageLog.InputCost = cost.InputCost
@@ -5493,6 +5540,7 @@ func (s *OpenAIGatewayService) calculateOpenAIImageCost(
 	result *OpenAIForwardResult,
 	multiplier float64,
 ) *CostBreakdown {
+	sizeTier := NormalizeImageBillingTierOrDefault(result.ImageSize)
 	if resolved := s.resolveOpenAIChannelPricing(ctx, billingModel, apiKey); resolved != nil &&
 		(resolved.Mode == BillingModePerRequest || resolved.Mode == BillingModeImage) {
 		gid := apiKey.Group.ID
@@ -5501,7 +5549,7 @@ func (s *OpenAIGatewayService) calculateOpenAIImageCost(
 			Model:          billingModel,
 			GroupID:        &gid,
 			RequestCount:   result.ImageCount,
-			SizeTier:       result.ImageSize,
+			SizeTier:       sizeTier,
 			RateMultiplier: multiplier,
 			Resolver:       s.resolver,
 			Resolved:       resolved,
@@ -5520,7 +5568,7 @@ func (s *OpenAIGatewayService) calculateOpenAIImageCost(
 			Price4K: apiKey.Group.ImagePrice4K,
 		}
 	}
-	return s.billingService.CalculateImageCost(billingModel, result.ImageSize, result.ImageCount, groupConfig, multiplier)
+	return s.billingService.CalculateImageCost(billingModel, sizeTier, result.ImageCount, groupConfig, multiplier)
 }
 
 func (s *OpenAIGatewayService) resolveOpenAIChannelPricing(ctx context.Context, billingModel string, apiKey *APIKey) *ResolvedPricing {

backend/internal/service/openai_images.go

@@ -532,54 +532,7 @@ func isOpenAINativeImageOption(name string) bool {
 }
 
 func normalizeOpenAIImageSizeTier(size string) string {
-	trimmed := strings.TrimSpace(size)
+	return NormalizeImageBillingTierOrDefault(size)
-	normalized := strings.ToLower(trimmed)
-	switch normalized {
-	case "", "auto":
-		return "2K"
-	case "1024x1024":
-		return "1K"
-	case "1536x1024", "1024x1536", "1792x1024", "1024x1792", "2048x2048", "2048x1152", "1152x2048":
-		return "2K"
-	case "3840x2160", "2160x3840":
-		return "4K"
-	}
-	width, height, ok := parseOpenAIImageSizeDimensions(trimmed)
-	if !ok {
-		return "2K"
-	}
-	return classifyUnknownOpenAIImageSizeTier(width, height)
-}
-
-const (
-	openAIImage2KMaxPixels = 2560 * 1440
-)
-
-func parseOpenAIImageSizeDimensions(size string) (int, int, bool) {
-	trimmed := strings.TrimSpace(size)
-	parts := strings.Split(strings.ToLower(trimmed), "x")
-	if len(parts) != 2 {
-		return 0, 0, false
-	}
-	width, err := strconv.Atoi(strings.TrimSpace(parts[0]))
-	if err != nil {
-		return 0, 0, false
-	}
-	height, err := strconv.Atoi(strings.TrimSpace(parts[1]))
-	if err != nil {
-		return 0, 0, false
-	}
-	if width <= 0 || height <= 0 {
-		return 0, 0, false
-	}
-	return width, height, true
-}
-
-func classifyUnknownOpenAIImageSizeTier(width int, height int) string {
-	if height > 0 && width > openAIImage2KMaxPixels/height {
-		return "4K"
-	}
-	return "2K"
 }
 
 func (s *OpenAIGatewayService) ForwardImages(
@@ -704,29 +657,46 @@ func (s *OpenAIGatewayService) forwardOpenAIImagesAPIKey(
 	imageCount := parsed.N
 	var firstTokenMs *int
 	if parsed.Stream && isEventStreamResponse(resp.Header) {
-		streamUsage, streamCount, ttft, err := s.handleOpenAIImagesStreamingResponse(resp, c, startTime)
+		streamUsage, streamCount, streamSizes, ttft, err := s.handleOpenAIImagesStreamingResponse(resp, c, startTime)
 		if err != nil {
 			if streamCount > 0 {
 				return &OpenAIForwardResult{
-					RequestID:       resp.Header.Get("x-request-id"),
+					RequestID:        resp.Header.Get("x-request-id"),
-					Usage:           streamUsage,
+					Usage:            streamUsage,
-					Model:           requestModel,
+					Model:            requestModel,
-					UpstreamModel:   upstreamModel,
+					UpstreamModel:    upstreamModel,
-					Stream:          parsed.Stream,
+					Stream:           parsed.Stream,
-					ResponseHeaders: resp.Header.Clone(),
+					ResponseHeaders:  resp.Header.Clone(),
-					Duration:        time.Since(startTime),
+					Duration:         time.Since(startTime),
-					FirstTokenMs:    ttft,
+					FirstTokenMs:     ttft,
-					ImageCount:      streamCount,
+					ImageCount:       streamCount,
-					ImageSize:       parsed.SizeTier,
+					ImageSize:        parsed.SizeTier,
+					ImageInputSize:   parsed.Size,
+					ImageOutputSizes: streamSizes,
 				}, err
 			}
 			return nil, err
 		}
 		usage = streamUsage
 		imageCount = streamCount
+		imageOutputSizes := streamSizes
 		firstTokenMs = ttft
+		return &OpenAIForwardResult{
+			RequestID:        resp.Header.Get("x-request-id"),
+			Usage:            usage,
+			Model:            requestModel,
+			UpstreamModel:    upstreamModel,
+			Stream:           parsed.Stream,
+			ResponseHeaders:  resp.Header.Clone(),
+			Duration:         time.Since(startTime),
+			FirstTokenMs:     firstTokenMs,
+			ImageCount:       imageCount,
+			ImageSize:        parsed.SizeTier,
+			ImageInputSize:   parsed.Size,
+			ImageOutputSizes: imageOutputSizes,
+		}, nil
 	} else {
-		nonStreamUsage, nonStreamCount, err := s.handleOpenAIImagesNonStreamingResponse(resp, c)
+		nonStreamUsage, nonStreamCount, nonStreamSizes, err := s.handleOpenAIImagesNonStreamingResponse(resp, c)
 		if err != nil {
 			return nil, err
 		}
@@ -734,19 +704,21 @@ func (s *OpenAIGatewayService) forwardOpenAIImagesAPIKey(
 		if nonStreamCount > 0 {
 			imageCount = nonStreamCount
 		}
+		return &OpenAIForwardResult{
+			RequestID:        resp.Header.Get("x-request-id"),
+			Usage:            usage,
+			Model:            requestModel,
+			UpstreamModel:    upstreamModel,
+			Stream:           parsed.Stream,
+			ResponseHeaders:  resp.Header.Clone(),
+			Duration:         time.Since(startTime),
+			FirstTokenMs:     firstTokenMs,
+			ImageCount:       imageCount,
+			ImageSize:        parsed.SizeTier,
+			ImageInputSize:   parsed.Size,
+			ImageOutputSizes: nonStreamSizes,
+		}, nil
 	}
-	return &OpenAIForwardResult{
-		RequestID:       resp.Header.Get("x-request-id"),
-		Usage:           usage,
-		Model:           requestModel,
-		UpstreamModel:   upstreamModel,
-		Stream:          parsed.Stream,
-		ResponseHeaders: resp.Header.Clone(),
-		Duration:        time.Since(startTime),
-		FirstTokenMs:    firstTokenMs,
-		ImageCount:      imageCount,
-		ImageSize:       parsed.SizeTier,
-	}, nil
 }
 
 func (s *OpenAIGatewayService) buildOpenAIImagesRequest(
@@ -892,10 +864,10 @@ func cloneMultipartHeader(src textproto.MIMEHeader) textproto.MIMEHeader {
 	return dst
 }
 
-func (s *OpenAIGatewayService) handleOpenAIImagesNonStreamingResponse(resp *http.Response, c *gin.Context) (OpenAIUsage, int, error) {
+func (s *OpenAIGatewayService) handleOpenAIImagesNonStreamingResponse(resp *http.Response, c *gin.Context) (OpenAIUsage, int, []string, error) {
 	body, err := ReadUpstreamResponseBody(resp.Body, s.cfg, c, openAITooLargeError)
 	if err != nil {
-		return OpenAIUsage{}, 0, err
+		return OpenAIUsage{}, 0, nil, err
 	}
 	responseheaders.WriteFilteredHeaders(c.Writer.Header(), resp.Header, s.responseHeaderFilter)
 	contentType := "application/json"
@@ -907,14 +879,14 @@ func (s *OpenAIGatewayService) handleOpenAIImagesNonStreamingResponse(resp *http
 	c.Data(resp.StatusCode, contentType, body)
 
 	usage, _ := extractOpenAIUsageFromJSONBytes(body)
-	return usage, extractOpenAIImageCountFromJSONBytes(body), nil
+	return usage, extractOpenAIImageCountFromJSONBytes(body), collectOpenAIResponseImageOutputSizesFromJSONBytes(body), nil
 }
 
 func (s *OpenAIGatewayService) handleOpenAIImagesStreamingResponse(
 	resp *http.Response,
 	c *gin.Context,
 	startTime time.Time,
-) (OpenAIUsage, int, *int, error) {
+) (OpenAIUsage, int, []string, *int, error) {
 	responseheaders.WriteFilteredHeaders(c.Writer.Header(), resp.Header, s.responseHeaderFilter)
 	contentType := strings.TrimSpace(resp.Header.Get("Content-Type"))
 	if contentType == "" {
@@ -925,7 +897,7 @@ func (s *OpenAIGatewayService) handleOpenAIImagesStreamingResponse(
 
 	flusher, ok := c.Writer.(http.Flusher)
 	if !ok {
-		return OpenAIUsage{}, 0, nil, fmt.Errorf("streaming is not supported by response writer")
+		return OpenAIUsage{}, 0, nil, nil, fmt.Errorf("streaming is not supported by response writer")
 	}
 
 	usage := OpenAIUsage{}
@@ -1010,12 +982,12 @@ func (s *OpenAIGatewayService) handleOpenAIImagesStreamingResponse(
 			}
 			if err != nil {
 				flushSSEEvent()
-				return usage, imageCounter.Count(), firstTokenMs, err
+				return usage, imageCounter.Count(), imageCounter.Sizes(), firstTokenMs, err
 			}
 		}
 		flushSSEEvent()
 		finalizeFallbackBody()
-		return usage, imageCounter.Count(), firstTokenMs, nil
+		return usage, imageCounter.Count(), imageCounter.Sizes(), firstTokenMs, nil
 	}
 
 	type readEvent struct {
@@ -1082,11 +1054,11 @@ func (s *OpenAIGatewayService) handleOpenAIImagesStreamingResponse(
 			if !ok {
 				flushSSEEvent()
 				finalizeFallbackBody()
-				return usage, imageCounter.Count(), firstTokenMs, nil
+				return usage, imageCounter.Count(), imageCounter.Sizes(), firstTokenMs, nil
 			}
 			if ev.err != nil {
 				flushSSEEvent()
-				return usage, imageCounter.Count(), firstTokenMs, ev.err
+				return usage, imageCounter.Count(), imageCounter.Sizes(), firstTokenMs, ev.err
 			}
 			processLine(ev.line)
 		case <-intervalCh:
@@ -1095,11 +1067,11 @@ func (s *OpenAIGatewayService) handleOpenAIImagesStreamingResponse(
 				continue
 			}
 			if clientDisconnected {
-				return usage, imageCounter.Count(), firstTokenMs, fmt.Errorf("image stream incomplete after timeout")
+				return usage, imageCounter.Count(), imageCounter.Sizes(), firstTokenMs, fmt.Errorf("image stream incomplete after timeout")
 			}
 			logger.LegacyPrintf("service.openai_gateway", "[OpenAI] Images stream data interval timeout: interval=%s", streamInterval)
 			_ = s.writeOpenAIImagesStreamEvent(c, flusher, "error", buildOpenAIImagesStreamErrorBody(fmt.Sprintf("upstream image stream idle for %s", streamInterval)))
-			return usage, imageCounter.Count(), firstTokenMs, fmt.Errorf("image stream data interval timeout")
+			return usage, imageCounter.Count(), imageCounter.Sizes(), firstTokenMs, fmt.Errorf("image stream data interval timeout")
 		case <-keepaliveCh:
 			if clientDisconnected || time.Since(lastDownstreamWriteAt) < keepaliveInterval {
 				continue

backend/internal/service/openai_images_responses.go

@@ -72,6 +72,22 @@ func mergeOpenAIResponsesImageMeta(dst *openAIResponsesImageResult, src openAIRe
 	}
 }
 
+func openAIResponsesImageResultSizes(results []openAIResponsesImageResult) []string {
+	if len(results) == 0 {
+		return nil
+	}
+	sizes := make([]string, 0, len(results))
+	for _, result := range results {
+		if size := strings.TrimSpace(result.Size); size != "" {
+			sizes = append(sizes, size)
+		}
+	}
+	if len(sizes) == 0 {
+		return nil
+	}
+	return sizes
+}
+
 func extractOpenAIResponsesImageMetaFromLifecycleEvent(payload []byte) (openAIResponsesImageResult, int64, bool) {
 	switch gjson.GetBytes(payload, "type").String() {
 	case "response.created", "response.in_progress", "response.completed":
@@ -547,10 +563,10 @@ func (s *OpenAIGatewayService) handleOpenAIImagesOAuthNonStreamingResponse(
 	c *gin.Context,
 	responseFormat string,
 	fallbackModel string,
-) (OpenAIUsage, int, error) {
+) (OpenAIUsage, int, []string, error) {
 	body, err := ReadUpstreamResponseBody(resp.Body, s.cfg, c, openAITooLargeError)
 	if err != nil {
-		return OpenAIUsage{}, 0, err
+		return OpenAIUsage{}, 0, nil, err
 	}
 
 	var usage OpenAIUsage
@@ -559,10 +575,10 @@ func (s *OpenAIGatewayService) handleOpenAIImagesOAuthNonStreamingResponse(
 	})
 	results, createdAt, usageRaw, firstMeta, _, err := collectOpenAIImagesFromResponsesBody(body)
 	if err != nil {
-		return OpenAIUsage{}, 0, err
+		return OpenAIUsage{}, 0, nil, err
 	}
 	if len(results) == 0 {
-		return OpenAIUsage{}, 0, fmt.Errorf("upstream did not return image output")
+		return OpenAIUsage{}, 0, nil, fmt.Errorf("upstream did not return image output")
 	}
 	if strings.TrimSpace(firstMeta.Model) == "" {
 		firstMeta.Model = strings.TrimSpace(fallbackModel)
@@ -570,11 +586,11 @@ func (s *OpenAIGatewayService) handleOpenAIImagesOAuthNonStreamingResponse(
 
 	responseBody, err := buildOpenAIImagesAPIResponse(results, createdAt, usageRaw, firstMeta, responseFormat)
 	if err != nil {
-		return OpenAIUsage{}, 0, err
+		return OpenAIUsage{}, 0, nil, err
 	}
 	responseheaders.WriteFilteredHeaders(c.Writer.Header(), resp.Header, s.responseHeaderFilter)
 	c.Data(resp.StatusCode, "application/json; charset=utf-8", responseBody)
-	return usage, len(results), nil
+	return usage, len(results), openAIResponsesImageResultSizes(results), nil
 }
 
 func (s *OpenAIGatewayService) handleOpenAIImagesOAuthStreamingResponse(
@@ -584,7 +600,7 @@ func (s *OpenAIGatewayService) handleOpenAIImagesOAuthStreamingResponse(
 	responseFormat string,
 	streamPrefix string,
 	fallbackModel string,
-) (OpenAIUsage, int, *int, error) {
+) (OpenAIUsage, int, []string, *int, error) {
 	responseheaders.WriteFilteredHeaders(c.Writer.Header(), resp.Header, s.responseHeaderFilter)
 	c.Header("Content-Type", "text/event-stream")
 	c.Header("Cache-Control", "no-cache")
@@ -593,7 +609,7 @@ func (s *OpenAIGatewayService) handleOpenAIImagesOAuthStreamingResponse(
 
 	flusher, ok := c.Writer.(http.Flusher)
 	if !ok {
-		return OpenAIUsage{}, 0, nil, fmt.Errorf("streaming is not supported by response writer")
+		return OpenAIUsage{}, 0, nil, nil, fmt.Errorf("streaming is not supported by response writer")
 	}
 
 	format := strings.ToLower(strings.TrimSpace(responseFormat))
@@ -603,6 +619,7 @@ func (s *OpenAIGatewayService) handleOpenAIImagesOAuthStreamingResponse(
 
 	usage := OpenAIUsage{}
 	imageCount := 0
+	var imageOutputSizes []string
 	var firstTokenMs *int
 	emitted := make(map[string]struct{})
 	pendingResults := make([]openAIResponsesImageResult, 0, 1)
@@ -713,6 +730,7 @@ func (s *OpenAIGatewayService) handleOpenAIImagesOAuthStreamingResponse(
 				s.tryWriteOpenAIImagesStreamEvent(c, flusher, &clientDisconnected, &lastDownstreamWriteAt, eventName, payload)
 			}
 			imageCount = len(emitted)
+			imageOutputSizes = openAIResponsesImageResultSizes(finalResults)
 			processDataDone = true
 		}
 	}
@@ -753,6 +771,7 @@ func (s *OpenAIGatewayService) handleOpenAIImagesOAuthStreamingResponse(
 				s.tryWriteOpenAIImagesStreamEvent(c, flusher, &clientDisconnected, &lastDownstreamWriteAt, eventName, payload)
 			}
 			imageCount = len(emitted)
+			imageOutputSizes = openAIResponsesImageResultSizes(pendingResults)
 			return nil
 		}
 
@@ -769,33 +788,33 @@ func (s *OpenAIGatewayService) handleOpenAIImagesOAuthStreamingResponse(
 			line, err := reader.ReadBytes('\n')
 			done, processErr := processLine(line)
 			if processErr != nil {
-				return usage, imageCount, firstTokenMs, processErr
+				return usage, imageCount, imageOutputSizes, firstTokenMs, processErr
 			}
 			if done {
-				return usage, imageCount, firstTokenMs, nil
+				return usage, imageCount, imageOutputSizes, firstTokenMs, nil
 			}
 			if err == io.EOF {
 				break
 			}
 			if err != nil {
 				if done, processErr := flushData(); processErr != nil {
-					return usage, imageCount, firstTokenMs, processErr
+					return usage, imageCount, imageOutputSizes, firstTokenMs, processErr
 				} else if done {
-					return usage, imageCount, firstTokenMs, nil
+					return usage, imageCount, imageOutputSizes, firstTokenMs, nil
 				}
 				s.tryWriteOpenAIImagesStreamEvent(c, flusher, &clientDisconnected, &lastDownstreamWriteAt, "error", buildOpenAIImagesStreamErrorBody(err.Error()))
-				return usage, imageCount, firstTokenMs, err
+				return usage, imageCount, imageOutputSizes, firstTokenMs, err
 			}
 		}
 		if done, processErr := flushData(); processErr != nil {
-			return usage, imageCount, firstTokenMs, processErr
+			return usage, imageCount, imageOutputSizes, firstTokenMs, processErr
 		} else if done {
-			return usage, imageCount, firstTokenMs, nil
+			return usage, imageCount, imageOutputSizes, firstTokenMs, nil
 		}
 		if err := finalizePending(); err != nil {
-			return usage, imageCount, firstTokenMs, err
+			return usage, imageCount, imageOutputSizes, firstTokenMs, err
 		}
-		return usage, imageCount, firstTokenMs, nil
+		return usage, imageCount, imageOutputSizes, firstTokenMs, nil
 	}
 
 	type readEvent struct {
@@ -861,30 +880,30 @@ func (s *OpenAIGatewayService) handleOpenAIImagesOAuthStreamingResponse(
 		case ev, ok := <-events:
 			if !ok {
 				if done, processErr := flushData(); processErr != nil {
-					return usage, imageCount, firstTokenMs, processErr
+					return usage, imageCount, imageOutputSizes, firstTokenMs, processErr
 				} else if done {
-					return usage, imageCount, firstTokenMs, nil
+					return usage, imageCount, imageOutputSizes, firstTokenMs, nil
 				}
 				if err := finalizePending(); err != nil {
-					return usage, imageCount, firstTokenMs, err
+					return usage, imageCount, imageOutputSizes, firstTokenMs, err
 				}
-				return usage, imageCount, firstTokenMs, nil
+				return usage, imageCount, imageOutputSizes, firstTokenMs, nil
 			}
 			if ev.err != nil {
 				if done, processErr := flushData(); processErr != nil {
-					return usage, imageCount, firstTokenMs, processErr
+					return usage, imageCount, imageOutputSizes, firstTokenMs, processErr
 				} else if done {
-					return usage, imageCount, firstTokenMs, nil
+					return usage, imageCount, imageOutputSizes, firstTokenMs, nil
 				}
 				s.tryWriteOpenAIImagesStreamEvent(c, flusher, &clientDisconnected, &lastDownstreamWriteAt, "error", buildOpenAIImagesStreamErrorBody(ev.err.Error()))
-				return usage, imageCount, firstTokenMs, ev.err
+				return usage, imageCount, imageOutputSizes, firstTokenMs, ev.err
 			}
 			done, processErr := processLine(ev.line)
 			if processErr != nil {
-				return usage, imageCount, firstTokenMs, processErr
+				return usage, imageCount, imageOutputSizes, firstTokenMs, processErr
 			}
 			if done {
-				return usage, imageCount, firstTokenMs, nil
+				return usage, imageCount, imageOutputSizes, firstTokenMs, nil
 			}
 		case <-intervalCh:
 			lastRead := time.Unix(0, atomic.LoadInt64(&lastReadAt))
@@ -892,11 +911,11 @@ func (s *OpenAIGatewayService) handleOpenAIImagesOAuthStreamingResponse(
 				continue
 			}
 			if clientDisconnected {
-				return usage, imageCount, firstTokenMs, fmt.Errorf("image stream incomplete after timeout")
+				return usage, imageCount, imageOutputSizes, firstTokenMs, fmt.Errorf("image stream incomplete after timeout")
 			}
 			logger.LegacyPrintf("service.openai_gateway", "[OpenAI] Images responses stream data interval timeout: interval=%s", streamInterval)
 			s.tryWriteOpenAIImagesStreamEvent(c, flusher, &clientDisconnected, &lastDownstreamWriteAt, "error", buildOpenAIImagesStreamErrorBody(fmt.Sprintf("upstream image stream idle for %s", streamInterval)))
-			return usage, imageCount, firstTokenMs, fmt.Errorf("image stream data interval timeout")
+			return usage, imageCount, imageOutputSizes, firstTokenMs, fmt.Errorf("image stream data interval timeout")
 		case <-keepaliveCh:
 			if clientDisconnected || time.Since(lastDownstreamWriteAt) < keepaliveInterval {
 				continue
@@ -1019,31 +1038,34 @@ func (s *OpenAIGatewayService) forwardOpenAIImagesOAuth(
 	defer func() { _ = resp.Body.Close() }()
 
 	var (
-		usage        OpenAIUsage
+		usage            OpenAIUsage
-		imageCount   int
+		imageCount       int
-		firstTokenMs *int
+		imageOutputSizes []string
+		firstTokenMs     *int
 	)
 	if parsed.Stream {
-		usage, imageCount, firstTokenMs, err = s.handleOpenAIImagesOAuthStreamingResponse(resp, c, startTime, parsed.ResponseFormat, openAIImagesStreamPrefix(parsed), requestModel)
+		usage, imageCount, imageOutputSizes, firstTokenMs, err = s.handleOpenAIImagesOAuthStreamingResponse(resp, c, startTime, parsed.ResponseFormat, openAIImagesStreamPrefix(parsed), requestModel)
 		if err != nil {
 			if imageCount > 0 {
 				return &OpenAIForwardResult{
-					RequestID:       resp.Header.Get("x-request-id"),
+					RequestID:        resp.Header.Get("x-request-id"),
-					Usage:           usage,
+					Usage:            usage,
-					Model:           requestModel,
+					Model:            requestModel,
-					UpstreamModel:   requestModel,
+					UpstreamModel:    requestModel,
-					Stream:          parsed.Stream,
+					Stream:           parsed.Stream,
-					ResponseHeaders: resp.Header.Clone(),
+					ResponseHeaders:  resp.Header.Clone(),
-					Duration:        time.Since(startTime),
+					Duration:         time.Since(startTime),
-					FirstTokenMs:    firstTokenMs,
+					FirstTokenMs:     firstTokenMs,
-					ImageCount:      imageCount,
+					ImageCount:       imageCount,
-					ImageSize:       parsed.SizeTier,
+					ImageSize:        parsed.SizeTier,
+					ImageInputSize:   parsed.Size,
+					ImageOutputSizes: imageOutputSizes,
 				}, err
 			}
 			return nil, err
 		}
 	} else {
-		usage, imageCount, err = s.handleOpenAIImagesOAuthNonStreamingResponse(resp, c, parsed.ResponseFormat, requestModel)
+		usage, imageCount, imageOutputSizes, err = s.handleOpenAIImagesOAuthNonStreamingResponse(resp, c, parsed.ResponseFormat, requestModel)
 		if err != nil {
 			return nil, err
 		}
@@ -1052,15 +1074,17 @@ func (s *OpenAIGatewayService) forwardOpenAIImagesOAuth(
 		imageCount = parsed.N
 	}
 	return &OpenAIForwardResult{
-		RequestID:       resp.Header.Get("x-request-id"),
+		RequestID:        resp.Header.Get("x-request-id"),
-		Usage:           usage,
+		Usage:            usage,
-		Model:           requestModel,
+		Model:            requestModel,
-		UpstreamModel:   requestModel,
+		UpstreamModel:    requestModel,
-		Stream:          parsed.Stream,
+		Stream:           parsed.Stream,
-		ResponseHeaders: resp.Header.Clone(),
+		ResponseHeaders:  resp.Header.Clone(),
-		Duration:        time.Since(startTime),
+		Duration:         time.Since(startTime),
-		FirstTokenMs:    firstTokenMs,
+		FirstTokenMs:     firstTokenMs,
-		ImageCount:      imageCount,
+		ImageCount:       imageCount,
-		ImageSize:       parsed.SizeTier,
+		ImageSize:        parsed.SizeTier,
+		ImageInputSize:   parsed.Size,
+		ImageOutputSizes: imageOutputSizes,
 	}, nil
 }

backend/internal/service/openai_images_test.go

@@ -149,9 +149,9 @@ func TestOpenAIGatewayServiceParseOpenAIImagesRequest_NormalizesOfficialAndCusto
 		{size: "2048x1152", wantTier: "2K"},
 		{size: "3840x2160", wantTier: "4K"},
 		{size: "2160x3840", wantTier: "4K"},
-		{size: "1024X768", wantTier: "2K"},
+		{size: "1024X768", wantTier: "1K"},
 		{size: "1280x768", wantTier: "2K"},
-		{size: "2560x1440", wantTier: "2K"},
+		{size: "2560x1440", wantTier: "4K"},
 		{size: "2560x1600", wantTier: "4K"},
 		{size: "auto", wantTier: "2K"},
 	}
@@ -186,7 +186,7 @@ func TestOpenAIGatewayServiceParseOpenAIImagesRequest_UnknownSizesDoNotBlockPass
 		{size: "2048x1153", wantTier: "2K"},
 		{size: "4096x1024", wantTier: "4K"},
 		{size: "3840x1024", wantTier: "4K"},
-		{size: "512x512", wantTier: "2K"},
+		{size: "512x512", wantTier: "1K"},
 		{size: "invalid", wantTier: "2K"},
 		{size: "999999999999999999999999999x2", wantTier: "2K"},
 	}

backend/internal/service/openai_ws_forwarder.go

@@ -2351,18 +2351,19 @@ func (s *OpenAIGatewayService) forwardOpenAIWSV2(
 	)
 
 	return &OpenAIForwardResult{
-		RequestID:       responseID,
+		RequestID:        responseID,
-		Usage:           *usage,
+		Usage:            *usage,
-		Model:           originalModel,
+		Model:            originalModel,
-		UpstreamModel:   mappedModel,
+		UpstreamModel:    mappedModel,
-		ImageCount:      imageCounter.Count(),
+		ImageCount:       imageCounter.Count(),
-		ServiceTier:     extractOpenAIServiceTier(reqBody),
+		ImageOutputSizes: imageCounter.Sizes(),
-		ReasoningEffort: extractOpenAIReasoningEffort(reqBody, originalModel),
+		ServiceTier:      extractOpenAIServiceTier(reqBody),
-		Stream:          reqStream,
+		ReasoningEffort:  extractOpenAIReasoningEffort(reqBody, originalModel),
-		OpenAIWSMode:    true,
+		Stream:           reqStream,
-		ResponseHeaders: lease.HandshakeHeaders(),
+		OpenAIWSMode:     true,
-		Duration:        time.Since(startTime),
+		ResponseHeaders:  lease.HandshakeHeaders(),
-		FirstTokenMs:    firstTokenMs,
+		Duration:         time.Since(startTime),
+		FirstTokenMs:     firstTokenMs,
 	}, nil
 }
 
@@ -2464,6 +2465,7 @@ func (s *OpenAIGatewayService) ProxyResponsesWebSocketFromClient(
 		originalModel      string
 		imageBillingModel  string
 		imageSizeTier      string
+		imageInputSize     string
 		payloadBytes       int
 	}
 
@@ -2567,12 +2569,16 @@ func (s *OpenAIGatewayService) ProxyResponsesWebSocketFromClient(
 		}
 		imageBillingModel := ""
 		imageSizeTier := ""
+		imageInputSize := ""
 		if imageIntent {
 			var imageCfgErr error
-			imageBillingModel, imageSizeTier, imageCfgErr = resolveOpenAIResponsesImageBillingConfigFromBody(normalized, originalModel)
+			imageCfg, imageCfgErr := resolveOpenAIResponsesImageBillingConfigDetailedFromBody(normalized, originalModel)
 			if imageCfgErr != nil {
 				return openAIWSClientPayload{}, NewOpenAIWSClientCloseError(coderws.StatusPolicyViolation, imageCfgErr.Error(), imageCfgErr)
 			}
+			imageBillingModel = imageCfg.Model
+			imageSizeTier = imageCfg.SizeTier
+			imageInputSize = imageCfg.InputSize
 		}
 
 		// Apply OpenAI Fast Policy on the response.create frame using the same
@@ -2621,6 +2627,7 @@ func (s *OpenAIGatewayService) ProxyResponsesWebSocketFromClient(
 			originalModel:      originalModel,
 			imageBillingModel:  imageBillingModel,
 			imageSizeTier:      imageSizeTier,
+			imageInputSize:     imageInputSize,
 			payloadBytes:       len(normalized),
 		}, nil
 	}
@@ -2822,7 +2829,7 @@ func (s *OpenAIGatewayService) ProxyResponsesWebSocketFromClient(
 		return payload, nil
 	}
 
-	sendAndRelay := func(turn int, lease *openAIWSConnLease, payload []byte, payloadBytes int, originalModel string, imageBillingModel string, imageSizeTier string) (*OpenAIForwardResult, error) {
+	sendAndRelay := func(turn int, lease *openAIWSConnLease, payload []byte, payloadBytes int, originalModel string, imageBillingModel string, imageSizeTier string, imageInputSize string) (*OpenAIForwardResult, error) {
 		if lease == nil {
 			return nil, errors.New("upstream websocket lease is nil")
 		}
@@ -3046,6 +3053,8 @@ func (s *OpenAIGatewayService) ProxyResponsesWebSocketFromClient(
 				if imageCount > 0 {
 					result.ImageCount = imageCount
 					result.ImageSize = imageSizeTier
+					result.ImageInputSize = imageInputSize
+					result.ImageOutputSizes = imageCounter.Sizes()
 					result.BillingModel = imageBillingModel
 				}
 				return result, nil
@@ -3057,6 +3066,7 @@ func (s *OpenAIGatewayService) ProxyResponsesWebSocketFromClient(
 	currentOriginalModel := firstPayload.originalModel
 	currentImageBillingModel := firstPayload.imageBillingModel
 	currentImageSizeTier := firstPayload.imageSizeTier
+	currentImageInputSize := firstPayload.imageInputSize
 	currentPayloadBytes := firstPayload.payloadBytes
 	isStrictAffinityTurn := func(payload []byte) bool {
 		if !storeDisabled {
@@ -3534,7 +3544,7 @@ func (s *OpenAIGatewayService) ProxyResponsesWebSocketFromClient(
 			)
 		}
 
-		result, relayErr := sendAndRelay(turn, sessionLease, currentPayload, currentPayloadBytes, currentOriginalModel, currentImageBillingModel, currentImageSizeTier)
+		result, relayErr := sendAndRelay(turn, sessionLease, currentPayload, currentPayloadBytes, currentOriginalModel, currentImageBillingModel, currentImageSizeTier, currentImageInputSize)
 		if relayErr != nil {
 			lastTurnClean = false
 			if recoverIngressPrevResponseNotFound(relayErr, turn, connID) {
@@ -3658,6 +3668,7 @@ func (s *OpenAIGatewayService) ProxyResponsesWebSocketFromClient(
 		currentOriginalModel = nextPayload.originalModel
 		currentImageBillingModel = nextPayload.imageBillingModel
 		currentImageSizeTier = nextPayload.imageSizeTier
+		currentImageInputSize = nextPayload.imageInputSize
 		currentPayloadBytes = nextPayload.payloadBytes
 		storeDisabled = s.isOpenAIWSStoreDisabledInRequestRaw(currentPayload, account)
 		if !storeDisabled {

backend/internal/service/usage_log.go

@@ -162,9 +162,13 @@ type UsageLog struct {
 	CacheTTLOverridden bool
 
 	// 图片生成字段
-	ImageCount int
+	ImageCount         int
-	ImageSize  *string
+	ImageSize          *string
-	MediaType  *string
+	ImageInputSize     *string
+	ImageOutputSize    *string
+	ImageSizeSource    *string
+	ImageSizeBreakdown map[string]int
+	MediaType          *string
 
 	CreatedAt time.Time
 

backend/migrations/136_usage_log_image_size_metadata.sql

@@ -0,0 +1,51 @@
+-- Add generated-image billing size audit metadata.
+-- `image_size` remains the canonical billing tier used for cost calculation.
+
+ALTER TABLE usage_logs
+    ADD COLUMN IF NOT EXISTS image_input_size VARCHAR(32);
+
+ALTER TABLE usage_logs
+    ADD COLUMN IF NOT EXISTS image_output_size VARCHAR(32);
+
+ALTER TABLE usage_logs
+    ADD COLUMN IF NOT EXISTS image_size_source VARCHAR(16);
+
+ALTER TABLE usage_logs
+    ADD COLUMN IF NOT EXISTS image_size_breakdown JSONB;
+
+DO $$
+BEGIN
+    IF NOT EXISTS (
+        SELECT 1
+        FROM pg_constraint
+        WHERE conname = 'usage_logs_image_size_source_check'
+          AND conrelid = 'usage_logs'::regclass
+    ) THEN
+        ALTER TABLE usage_logs
+            ADD CONSTRAINT usage_logs_image_size_source_check
+            CHECK (
+                image_size_source IS NULL
+                OR image_size_source IN ('output', 'input', 'default', 'legacy')
+            ) NOT VALID;
+    END IF;
+END $$;
+
+DO $$
+BEGIN
+    IF NOT EXISTS (
+        SELECT 1
+        FROM pg_constraint
+        WHERE conname = 'usage_logs_image_billing_size_check'
+          AND conrelid = 'usage_logs'::regclass
+    ) THEN
+        ALTER TABLE usage_logs
+            ADD CONSTRAINT usage_logs_image_billing_size_check
+            CHECK (
+                image_count <= 0
+                OR (
+                    image_size IS NOT NULL
+                    AND image_size IN ('1K', '2K', '4K', 'mixed')
+                )
+            ) NOT VALID;
+    END IF;
+END $$;

frontend/src/components/admin/usage/UsageTable.vue

@@ -86,19 +86,19 @@
         </template>
 
         <template #cell-billing_mode="{ row }">
-          <span class="inline-flex items-center rounded px-2 py-0.5 text-xs font-medium" :class="getBillingModeBadgeClass(row.billing_mode)">
+          <span class="inline-flex items-center rounded px-2 py-0.5 text-xs font-medium" :class="getBillingModeBadgeClass(getDisplayBillingMode(row))">
-            {{ getBillingModeLabel(row.billing_mode, t) }}
+            {{ getBillingModeLabel(getDisplayBillingMode(row), t) }}
           </span>
         </template>
 
         <template #cell-tokens="{ row }">
           <!-- 图片生成请求（仅按次计费时显示图片格式） -->
-          <div v-if="row.image_count > 0 && row.billing_mode === BILLING_MODE_IMAGE" class="flex items-center gap-1.5">
+          <div v-if="isImageUsage(row)" class="flex items-center gap-1.5">
             <svg class="h-4 w-4 text-indigo-500" fill="none" stroke="currentColor" viewBox="0 0 24 24">
               <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 16l4.586-4.586a2 2 0 012.828 0L16 16m-2-2l1.586-1.586a2 2 0 012.828 0L20 14m-6-6h.01M6 20h12a2 2 0 002-2V6a2 2 0 00-2-2H6a2 2 0 00-2 2v12a2 2 0 002 2z" />
             </svg>
             <span class="font-medium text-gray-900 dark:text-white">{{ row.image_count }}{{ t('usage.imageUnit') }}</span>
-            <span class="text-gray-400">({{ row.image_size || '2K' }})</span>
+            <span class="text-gray-400">({{ formatImageBillingSize(row, t) }})</span>
           </div>
           <!-- Token 请求 -->
           <div v-else class="flex items-center gap-1.5">
@@ -280,21 +280,30 @@
               <span class="font-medium text-white">${{ tooltipData.output_cost.toFixed(6) }}</span>
             </div>
             <!-- Token billing: show unit prices per 1M tokens -->
-            <template v-if="!tooltipData?.billing_mode || tooltipData.billing_mode === BILLING_MODE_TOKEN">
+            <template v-if="tooltipData && isImageUsage(tooltipData)">
-              <div v-if="tooltipData && tooltipData.input_tokens > 0" class="flex items-center justify-between gap-4">
-                <span class="text-gray-400">{{ t('usage.inputTokenPrice') }}</span>
-                <span class="font-medium text-sky-300">{{ formatTokenPricePerMillion(tooltipData.input_cost, tooltipData.input_tokens) }} {{ t('usage.perMillionTokens') }}</span>
-              </div>
-              <div v-if="tooltipData && tooltipData.output_tokens > 0" class="flex items-center justify-between gap-4">
-                <span class="text-gray-400">{{ t('usage.outputTokenPrice') }}</span>
-                <span class="font-medium text-violet-300">{{ formatTokenPricePerMillion(tooltipData.output_cost, tooltipData.output_tokens) }} {{ t('usage.perMillionTokens') }}</span>
-              </div>
-            </template>
-            <!-- Per-request / image billing: show unit price -->
-            <template v-else-if="tooltipData?.billing_mode === BILLING_MODE_IMAGE">
               <div class="flex items-center justify-between gap-4">
                 <span class="text-gray-400">{{ t('usage.imageCount') }}</span>
-                <span class="font-medium text-white">{{ tooltipData.image_count }}{{ t('usage.imageUnit') }} ({{ tooltipData.image_size || '2K' }})</span>
+                <span class="font-medium text-white">{{ tooltipData.image_count }}{{ t('usage.imageUnit') }}</span>
+              </div>
+              <div class="flex items-center justify-between gap-4">
+                <span class="text-gray-400">{{ t('usage.imageBillingSize') }}</span>
+                <span class="font-medium text-white">{{ formatImageBillingSize(tooltipData, t) }}</span>
+              </div>
+              <div class="flex items-center justify-between gap-4">
+                <span class="text-gray-400">{{ t('usage.imageSizeSource') }}</span>
+                <span class="font-medium text-white">{{ formatImageSizeSource(tooltipData, t) }}</span>
+              </div>
+              <div class="flex items-center justify-between gap-4">
+                <span class="text-gray-400">{{ t('usage.imageInputSize') }}</span>
+                <span class="font-medium text-white">{{ formatImageInputSize(tooltipData, t) }}</span>
+              </div>
+              <div class="flex items-center justify-between gap-4">
+                <span class="text-gray-400">{{ t('usage.imageOutputSize') }}</span>
+                <span class="font-medium text-white">{{ formatImageOutputSize(tooltipData, t) }}</span>
+              </div>
+              <div v-if="formatImageSizeBreakdown(tooltipData)" class="flex items-center justify-between gap-4">
+                <span class="text-gray-400">{{ t('usage.imageSizeBreakdown') }}</span>
+                <span class="font-medium text-white">{{ formatImageSizeBreakdown(tooltipData) }}</span>
               </div>
               <div class="flex items-center justify-between gap-4">
                 <span class="text-gray-400">{{ t('usage.imageUnitPrice') }}</span>
@@ -305,6 +314,16 @@
                 <span class="font-medium text-white">${{ tooltipData.total_cost?.toFixed(6) || '0.000000' }}</span>
               </div>
             </template>
+            <template v-else-if="!tooltipData?.billing_mode || tooltipData.billing_mode === BILLING_MODE_TOKEN">
+              <div v-if="tooltipData && tooltipData.input_tokens > 0" class="flex items-center justify-between gap-4">
+                <span class="text-gray-400">{{ t('usage.inputTokenPrice') }}</span>
+                <span class="font-medium text-sky-300">{{ formatTokenPricePerMillion(tooltipData.input_cost, tooltipData.input_tokens) }} {{ t('usage.perMillionTokens') }}</span>
+              </div>
+              <div v-if="tooltipData && tooltipData.output_tokens > 0" class="flex items-center justify-between gap-4">
+                <span class="text-gray-400">{{ t('usage.outputTokenPrice') }}</span>
+                <span class="font-medium text-violet-300">{{ formatTokenPricePerMillion(tooltipData.output_cost, tooltipData.output_tokens) }} {{ t('usage.perMillionTokens') }}</span>
+              </div>
+            </template>
             <div v-else class="flex items-center justify-between gap-4">
               <span class="text-gray-400">{{ t('usage.unitPrice') }}</span>
               <span class="font-medium text-sky-300">${{ tooltipData?.total_cost?.toFixed(6) || '0.000000' }}</span>
@@ -366,6 +385,13 @@ import { formatTokenPricePerMillion } from '@/utils/usagePricing'
 import { getUsageServiceTierLabel } from '@/utils/usageServiceTier'
 import { resolveUsageRequestType } from '@/utils/usageRequestType'
 import { getBillingModeLabel, getBillingModeBadgeClass, BILLING_MODE_TOKEN, BILLING_MODE_IMAGE } from '@/utils/billingMode'
+import {
+  formatImageBillingSize,
+  formatImageInputSize,
+  formatImageOutputSize,
+  formatImageSizeBreakdown,
+  formatImageSizeSource,
+} from '@/utils/imageUsage'
 
 /** Compute the account-billed cost for display: (account_stats_cost ?? total_cost) * rate_multiplier */
 function accountBilled(row: { total_cost?: number | null; account_stats_cost?: number | null; account_rate_multiplier?: number | null }): number {
@@ -381,6 +407,17 @@ function imageUnitPrice(row: AdminUsageLog | null): number {
   return Number.isFinite(price) ? price : 0
 }
 
+function isImageUsage(row: Pick<AdminUsageLog, 'image_count'> | null | undefined): boolean {
+  return (row?.image_count ?? 0) > 0
+}
+
+function getDisplayBillingMode(row: Pick<AdminUsageLog, 'billing_mode' | 'image_count'> | null | undefined): string | null | undefined {
+  if (isImageUsage(row)) {
+    return BILLING_MODE_IMAGE
+  }
+  return row?.billing_mode
+}
+
 import DataTable from '@/components/common/DataTable.vue'
 import EmptyState from '@/components/common/EmptyState.vue'
 import Icon from '@/components/icons/Icon.vue'

frontend/src/components/admin/usage/__tests__/UsageTable.spec.ts

@@ -22,6 +22,26 @@ const messages: Record<string, string> = {
   'usage.original': 'Original',
   'usage.userBilled': 'User billed',
   'usage.accountBilled': 'Account billed',
+  'usage.imageUnit': ' images',
+  'usage.imageCount': 'Image count',
+  'usage.imageBillingSize': 'Billing size',
+  'usage.imageInputSize': 'Input size',
+  'usage.imageOutputSize': 'Output size',
+  'usage.imageSizeSource': 'Size source',
+  'usage.imageSizeBreakdown': 'Size breakdown',
+  'usage.imageSizeSourceOutput': 'Upstream output',
+  'usage.imageSizeSourceInput': 'Request input',
+  'usage.imageSizeSourceDefault': 'Default billing tier',
+  'usage.imageSizeSourceLegacy': 'Legacy record',
+  'usage.imageSizeSourceMissing': 'Not recorded',
+  'usage.imageSizeNotRecorded': 'not recorded',
+  'usage.imageSizeLegacyUnstandardized': 'legacy unstandardized',
+  'usage.imageSizeUnknown': 'unknown',
+  'usage.imageUnitPrice': 'Per-image price',
+  'usage.imageTotalPrice': 'Image total price',
+  'admin.usage.billingModeToken': 'Token',
+  'admin.usage.billingModePerRequest': 'Per request',
+  'admin.usage.billingModeImage': 'Image',
 }
 
 vi.mock('vue-i18n', async () => {
@@ -40,12 +60,42 @@ const DataTableStub = {
     <div>
       <div v-for="row in data" :key="row.request_id">
         <slot name="cell-model" :row="row" :value="row.model" />
+        <slot name="cell-billing_mode" :row="row" />
+        <slot name="cell-tokens" :row="row" />
         <slot name="cell-cost" :row="row" />
       </div>
     </div>
   `,
 }
 
+const baseImageRow = {
+  request_id: 'req-admin-image',
+  model: 'gpt-image-2',
+  actual_cost: 0.4,
+  total_cost: 0.4,
+  account_rate_multiplier: 1,
+  rate_multiplier: 1,
+  service_tier: null,
+  input_cost: 0,
+  output_cost: 0,
+  cache_creation_cost: 0,
+  cache_read_cost: 0,
+  input_tokens: 0,
+  output_tokens: 0,
+  cache_creation_tokens: 0,
+  cache_read_tokens: 0,
+  cache_creation_5m_tokens: 0,
+  cache_creation_1h_tokens: 0,
+  cache_ttl_overridden: false,
+  billing_mode: 'image',
+  image_count: 2,
+  image_size: '2K',
+  image_input_size: null,
+  image_output_size: null,
+  image_size_source: null,
+  image_size_breakdown: null,
+}
+
 describe('admin UsageTable tooltip', () => {
   beforeEach(() => {
     vi.spyOn(HTMLElement.prototype, 'getBoundingClientRect').mockReturnValue({
@@ -93,7 +143,8 @@ describe('admin UsageTable tooltip', () => {
       },
     })
 
-    await wrapper.find('.group.relative').trigger('mouseenter')
+    const tooltipTriggers = wrapper.findAll('.group.relative')
+    await tooltipTriggers[tooltipTriggers.length - 1].trigger('mouseenter')
     await nextTick()
 
     const text = wrapper.text()
@@ -147,4 +198,126 @@ describe('admin UsageTable tooltip', () => {
     expect(text).toContain('claude-sonnet-4')
     expect(text).toContain('claude-sonnet-4-20250514')
   })
+
+  it.each([
+    {
+      name: 'defaulted row',
+      row: {
+        ...baseImageRow,
+        request_id: 'req-admin-default-image',
+        image_size: '2K',
+        image_input_size: 'auto',
+        image_output_size: null,
+        image_size_source: 'default',
+      },
+      expected: ['2K', 'Default billing tier', 'auto', 'unknown'],
+    },
+    {
+      name: 'output-sourced row',
+      row: {
+        ...baseImageRow,
+        request_id: 'req-admin-output-image',
+        image_size: '4K',
+        image_input_size: '1024x1024',
+        image_output_size: '3840x2160',
+        image_size_source: 'output',
+        image_size_breakdown: { '4K': 1 },
+      },
+      expected: ['4K', 'Upstream output', '1024x1024', '3840x2160', '4K x 1'],
+    },
+    {
+      name: 'input-sourced row',
+      row: {
+        ...baseImageRow,
+        request_id: 'req-admin-input-image',
+        image_size: '1K',
+        image_input_size: '1024x1024',
+        image_output_size: null,
+        image_size_source: 'input',
+      },
+      expected: ['1K', 'Request input', '1024x1024', 'unknown'],
+    },
+    {
+      name: 'legacy unstandardized row',
+      row: {
+        ...baseImageRow,
+        request_id: 'req-admin-legacy-unstandardized-image',
+        image_size: '512x512',
+        image_input_size: null,
+        image_output_size: null,
+        image_size_source: null,
+      },
+      expected: ['legacy unstandardized: 512x512', 'Legacy record', 'unknown'],
+    },
+  ])('shows image usage metadata for $name', async ({ row, expected }) => {
+    const wrapper = mount(UsageTable, {
+      props: {
+        data: [row],
+        loading: false,
+        columns: [],
+      },
+      global: {
+        stubs: {
+          DataTable: DataTableStub,
+          EmptyState: true,
+          Icon: true,
+          Teleport: true,
+        },
+      },
+    })
+
+    await wrapper.find('.group.relative').trigger('mouseenter')
+    await nextTick()
+
+    const text = wrapper.text()
+    expect(text).toContain('Image count')
+    expect(text).toContain('Billing size')
+    expect(text).toContain('Size source')
+    expect(text).toContain('Input size')
+    expect(text).toContain('Output size')
+    expect(text).toContain('Per-image price')
+    expect(text).toContain('Image total price')
+    for (const value of expected) {
+      expect(text).toContain(value)
+    }
+  })
+
+  it('displays historical image rows with missing billing_mode as image usage without a 2K fallback', async () => {
+    const wrapper = mount(UsageTable, {
+      props: {
+        data: [
+          {
+            ...baseImageRow,
+            request_id: 'req-admin-legacy-missing-image',
+            billing_mode: null,
+            image_size: null,
+            image_input_size: null,
+            image_output_size: null,
+            image_size_source: null,
+            image_size_breakdown: null,
+          },
+        ],
+        loading: false,
+        columns: [],
+      },
+      global: {
+        stubs: {
+          DataTable: DataTableStub,
+          EmptyState: true,
+          Icon: true,
+          Teleport: true,
+        },
+      },
+    })
+
+    await wrapper.find('.group.relative').trigger('mouseenter')
+    await nextTick()
+
+    const text = wrapper.text()
+    expect(text).toContain('Image')
+    expect(text).toContain('Image count')
+    expect(text).toContain('Per-image price')
+    expect(text).toContain('not recorded')
+    expect(text).not.toContain('(2K)')
+  })
 })

frontend/src/i18n/locales/en.ts

@@ -855,6 +855,19 @@ export default {
     imageUnitPrice: 'Per-image price',
     imageTotalPrice: 'Image total price',
     imageCount: 'Image count',
+    imageBillingSize: 'Billing size',
+    imageInputSize: 'Input size',
+    imageOutputSize: 'Output size',
+    imageSizeSource: 'Size source',
+    imageSizeBreakdown: 'Size breakdown',
+    imageSizeSourceOutput: 'Upstream output',
+    imageSizeSourceInput: 'Request input',
+    imageSizeSourceDefault: 'Default billing tier',
+    imageSizeSourceLegacy: 'Legacy record',
+    imageSizeSourceMissing: 'Not recorded',
+    imageSizeNotRecorded: 'not recorded',
+    imageSizeLegacyUnstandardized: 'legacy unstandardized',
+    imageSizeUnknown: 'unknown',
     cacheRead: 'Read',
     cacheWrite: 'Write',
     serviceTier: 'Service tier',

frontend/src/i18n/locales/zh.ts

@@ -859,6 +859,19 @@ export default {
     imageUnitPrice: '单张价格',
     imageTotalPrice: '图片总价',
     imageCount: '图片张数',
+    imageBillingSize: '计费尺寸',
+    imageInputSize: '输入尺寸',
+    imageOutputSize: '输出尺寸',
+    imageSizeSource: '尺寸来源',
+    imageSizeBreakdown: '尺寸明细',
+    imageSizeSourceOutput: '上游输出',
+    imageSizeSourceInput: '请求输入',
+    imageSizeSourceDefault: '默认计费档位',
+    imageSizeSourceLegacy: '历史记录',
+    imageSizeSourceMissing: '未记录',
+    imageSizeNotRecorded: '未记录',
+    imageSizeLegacyUnstandardized: '历史非标准',
+    imageSizeUnknown: '未知',
     cacheRead: '读取',
     cacheWrite: '写入',
     serviceTier: '服务档位',

frontend/src/types/index.ts

@@ -1154,6 +1154,8 @@ export interface CodexSessionImportResult {
 
 export type RedeemCodeType = 'balance' | 'concurrency' | 'subscription' | 'invitation'
 export type UsageRequestType = 'unknown' | 'sync' | 'stream' | 'ws_v2'
+export type ImageSizeSource = 'output' | 'input' | 'default' | 'legacy'
+export type ImageSizeBreakdown = Record<string, number>
 
 export interface UsageLog {
   id: number
@@ -1195,6 +1197,10 @@ export interface UsageLog {
   // 图片生成字段
   image_count: number
   image_size: string | null
+  image_input_size: string | null
+  image_output_size: string | null
+  image_size_source: ImageSizeSource | null
+  image_size_breakdown: ImageSizeBreakdown | null
 
   // User-Agent
   user_agent: string | null

frontend/src/utils/imageUsage.ts

@@ -0,0 +1,56 @@
+import type { UsageLog } from '@/types'
+
+type Translate = (key: string) => string
+
+const knownImageSizeSources = new Set(['output', 'input', 'default', 'legacy'])
+const knownImageBillingSizes = new Set(['1K', '2K', '4K', 'mixed'])
+
+type ImageUsageRow = Pick<
+  UsageLog,
+  'image_size' | 'image_input_size' | 'image_output_size' | 'image_size_source' | 'image_size_breakdown'
+>
+
+const trimmed = (value: string | null | undefined): string => value?.trim() ?? ''
+
+export const formatImageBillingSize = (row: ImageUsageRow | null | undefined, t: Translate): string => {
+  const size = trimmed(row?.image_size)
+  if (!size) {
+    return t('usage.imageSizeNotRecorded')
+  }
+  if (knownImageBillingSizes.has(size)) {
+    return size
+  }
+  return `${t('usage.imageSizeLegacyUnstandardized')}: ${size}`
+}
+
+export const formatImageInputSize = (row: ImageUsageRow | null | undefined, t: Translate): string => {
+  const size = trimmed(row?.image_input_size)
+  return size || t('usage.imageSizeUnknown')
+}
+
+export const formatImageOutputSize = (row: ImageUsageRow | null | undefined, t: Translate): string => {
+  const size = trimmed(row?.image_output_size)
+  return size || t('usage.imageSizeUnknown')
+}
+
+export const formatImageSizeSource = (row: ImageUsageRow | null | undefined, t: Translate): string => {
+  const source = trimmed(row?.image_size_source).toLowerCase()
+  if (knownImageSizeSources.has(source)) {
+    return t(`usage.imageSizeSource${source.charAt(0).toUpperCase()}${source.slice(1)}`)
+  }
+  if (trimmed(row?.image_size)) {
+    return t('usage.imageSizeSourceLegacy')
+  }
+  return t('usage.imageSizeSourceMissing')
+}
+
+export const formatImageSizeBreakdown = (row: ImageUsageRow | null | undefined): string => {
+  const breakdown = row?.image_size_breakdown
+  if (!breakdown || Object.keys(breakdown).length === 0) {
+    return ''
+  }
+  return ['1K', '2K', '4K']
+    .filter((tier) => (breakdown[tier] ?? 0) > 0)
+    .map((tier) => `${tier} x ${breakdown[tier]}`)
+    .join(', ')
+}

frontend/src/views/user/UsageView.vue

@@ -191,14 +191,14 @@
 
           <template #cell-billing_mode="{ row }">
             <span class="inline-flex items-center rounded px-1.5 py-0.5 text-xs font-medium"
-                  :class="getBillingModeBadgeClass(row.billing_mode)">
+                  :class="getBillingModeBadgeClass(getDisplayBillingMode(row))">
-              {{ getBillingModeLabel(row.billing_mode, t) }}
+              {{ getBillingModeLabel(getDisplayBillingMode(row), t) }}
             </span>
           </template>
 
           <template #cell-tokens="{ row }">
-            <!-- 图片生成请求（仅按次计费时显示图片格式） -->
+            <!-- 图片生成请求 -->
-            <div v-if="row.image_count > 0 && row.billing_mode === 'image'" class="flex items-center gap-1.5">
+            <div v-if="isImageUsage(row)" class="flex items-center gap-1.5">
               <svg
                 class="h-4 w-4 text-indigo-500"
                 fill="none"
@@ -212,8 +212,8 @@
                   d="M4 16l4.586-4.586a2 2 0 012.828 0L16 16m-2-2l1.586-1.586a2 2 0 012.828 0L20 14m-6-6h.01M6 20h12a2 2 0 002-2V6a2 2 0 00-2-2H6a2 2 0 00-2 2v12a2 2 0 002 2z"
                 />
               </svg>
-              <span class="font-medium text-gray-900 dark:text-white">{{ row.image_count }}{{ $t('usage.imageUnit') }}</span>
+              <span class="font-medium text-gray-900 dark:text-white">{{ row.image_count }}{{ t('usage.imageUnit') }}</span>
-              <span class="text-gray-400">({{ row.image_size || '2K' }})</span>
+              <span class="text-gray-400">({{ formatImageBillingSize(row, t) }})</span>
             </div>
             <!-- Token 请求 -->
             <div v-else class="flex items-center gap-1.5">
@@ -447,22 +447,31 @@
               <span class="text-gray-400">{{ t('admin.usage.outputCost') }}</span>
               <span class="font-medium text-white">${{ tooltipData.output_cost.toFixed(6) }}</span>
             </div>
-            <!-- Token billing: show unit prices per 1M tokens -->
+            <!-- Per-image billing: show image metadata and unit price -->
-            <template v-if="!tooltipData?.billing_mode || tooltipData.billing_mode === 'token'">
+            <template v-if="tooltipData && isImageUsage(tooltipData)">
-              <div v-if="tooltipData && tooltipData.input_tokens > 0" class="flex items-center justify-between gap-4">
-                <span class="text-gray-400">{{ t('usage.inputTokenPrice') }}</span>
-                <span class="font-medium text-sky-300">{{ formatTokenPricePerMillion(tooltipData.input_cost, tooltipData.input_tokens) }} {{ t('usage.perMillionTokens') }}</span>
-              </div>
-              <div v-if="tooltipData && tooltipData.output_tokens > 0" class="flex items-center justify-between gap-4">
-                <span class="text-gray-400">{{ t('usage.outputTokenPrice') }}</span>
-                <span class="font-medium text-violet-300">{{ formatTokenPricePerMillion(tooltipData.output_cost, tooltipData.output_tokens) }} {{ t('usage.perMillionTokens') }}</span>
-              </div>
-            </template>
-            <!-- Per-request / image billing: show unit price -->
-            <template v-else-if="tooltipData?.billing_mode === 'image'">
               <div class="flex items-center justify-between gap-4">
                 <span class="text-gray-400">{{ t('usage.imageCount') }}</span>
-                <span class="font-medium text-white">{{ tooltipData.image_count }}{{ t('usage.imageUnit') }} ({{ tooltipData.image_size || '2K' }})</span>
+                <span class="font-medium text-white">{{ tooltipData.image_count }}{{ t('usage.imageUnit') }}</span>
+              </div>
+              <div class="flex items-center justify-between gap-4">
+                <span class="text-gray-400">{{ t('usage.imageBillingSize') }}</span>
+                <span class="font-medium text-white">{{ formatImageBillingSize(tooltipData, t) }}</span>
+              </div>
+              <div class="flex items-center justify-between gap-4">
+                <span class="text-gray-400">{{ t('usage.imageSizeSource') }}</span>
+                <span class="font-medium text-white">{{ formatImageSizeSource(tooltipData, t) }}</span>
+              </div>
+              <div class="flex items-center justify-between gap-4">
+                <span class="text-gray-400">{{ t('usage.imageInputSize') }}</span>
+                <span class="font-medium text-white">{{ formatImageInputSize(tooltipData, t) }}</span>
+              </div>
+              <div class="flex items-center justify-between gap-4">
+                <span class="text-gray-400">{{ t('usage.imageOutputSize') }}</span>
+                <span class="font-medium text-white">{{ formatImageOutputSize(tooltipData, t) }}</span>
+              </div>
+              <div v-if="formatImageSizeBreakdown(tooltipData)" class="flex items-center justify-between gap-4">
+                <span class="text-gray-400">{{ t('usage.imageSizeBreakdown') }}</span>
+                <span class="font-medium text-white">{{ formatImageSizeBreakdown(tooltipData) }}</span>
               </div>
               <div class="flex items-center justify-between gap-4">
                 <span class="text-gray-400">{{ t('usage.imageUnitPrice') }}</span>
@@ -473,6 +482,17 @@
                 <span class="font-medium text-white">${{ tooltipData.total_cost?.toFixed(6) || '0.000000' }}</span>
               </div>
             </template>
+            <!-- Token billing: show unit prices per 1M tokens -->
+            <template v-else-if="!getDisplayBillingMode(tooltipData) || getDisplayBillingMode(tooltipData) === BILLING_MODE_TOKEN">
+              <div v-if="tooltipData && tooltipData.input_tokens > 0" class="flex items-center justify-between gap-4">
+                <span class="text-gray-400">{{ t('usage.inputTokenPrice') }}</span>
+                <span class="font-medium text-sky-300">{{ formatTokenPricePerMillion(tooltipData.input_cost, tooltipData.input_tokens) }} {{ t('usage.perMillionTokens') }}</span>
+              </div>
+              <div v-if="tooltipData && tooltipData.output_tokens > 0" class="flex items-center justify-between gap-4">
+                <span class="text-gray-400">{{ t('usage.outputTokenPrice') }}</span>
+                <span class="font-medium text-violet-300">{{ formatTokenPricePerMillion(tooltipData.output_cost, tooltipData.output_tokens) }} {{ t('usage.perMillionTokens') }}</span>
+              </div>
+            </template>
             <div v-else class="flex items-center justify-between gap-4">
               <span class="text-gray-400">{{ t('usage.unitPrice') }}</span>
               <span class="font-medium text-sky-300">${{ tooltipData?.total_cost?.toFixed(6) || '0.000000' }}</span>
@@ -538,7 +558,19 @@ import { formatCacheTokens, formatMultiplier } from '@/utils/formatters'
 import { formatTokenPricePerMillion } from '@/utils/usagePricing'
 import { getUsageServiceTierLabel } from '@/utils/usageServiceTier'
 import { resolveUsageRequestType } from '@/utils/usageRequestType'
-import { getBillingModeLabel, getBillingModeBadgeClass } from '@/utils/billingMode'
+import {
+  BILLING_MODE_IMAGE,
+  BILLING_MODE_TOKEN,
+  getBillingModeBadgeClass,
+  getBillingModeLabel,
+} from '@/utils/billingMode'
+import {
+  formatImageBillingSize,
+  formatImageInputSize,
+  formatImageOutputSize,
+  formatImageSizeBreakdown,
+  formatImageSizeSource,
+} from '@/utils/imageUsage'
 
 const { t } = useI18n()
 const appStore = useAppStore()
@@ -646,6 +678,17 @@ const imageUnitPrice = (row: UsageLog | null): number => {
   return Number.isFinite(price) ? price : 0
 }
 
+const isImageUsage = (row: Pick<UsageLog, 'image_count'> | null | undefined): boolean => {
+  return (row?.image_count ?? 0) > 0
+}
+
+const getDisplayBillingMode = (row: Pick<UsageLog, 'billing_mode' | 'image_count'> | null | undefined): string | null | undefined => {
+  if (isImageUsage(row)) {
+    return BILLING_MODE_IMAGE
+  }
+  return row?.billing_mode
+}
+
 const formatUserAgent = (ua: string): string => {
   return ua
 }
@@ -877,7 +920,7 @@ const exportToCSV = async () => {
         formatReasoningEffort(log.reasoning_effort),
         log.inbound_endpoint || '',
         getRequestTypeExportText(log),
-        getBillingModeLabel(log.billing_mode, t),
+        getBillingModeLabel(getDisplayBillingMode(log), t),
         log.input_tokens,
         log.output_tokens,
         log.cache_read_tokens,

frontend/src/views/user/__tests__/UsageView.spec.ts

@@ -41,6 +41,26 @@ const messages: Record<string, string> = {
   'usage.duration': 'Duration',
   'usage.time': 'Time',
   'usage.userAgent': 'User Agent',
+  'usage.imageUnit': ' images',
+  'usage.imageCount': 'Image count',
+  'usage.imageBillingSize': 'Billing size',
+  'usage.imageInputSize': 'Input size',
+  'usage.imageOutputSize': 'Output size',
+  'usage.imageSizeSource': 'Size source',
+  'usage.imageSizeBreakdown': 'Size breakdown',
+  'usage.imageSizeSourceOutput': 'Upstream output',
+  'usage.imageSizeSourceInput': 'Request input',
+  'usage.imageSizeSourceDefault': 'Default billing tier',
+  'usage.imageSizeSourceLegacy': 'Legacy record',
+  'usage.imageSizeSourceMissing': 'Not recorded',
+  'usage.imageSizeNotRecorded': 'not recorded',
+  'usage.imageSizeLegacyUnstandardized': 'legacy unstandardized',
+  'usage.imageSizeUnknown': 'unknown',
+  'usage.imageUnitPrice': 'Per-image price',
+  'usage.imageTotalPrice': 'Image total price',
+  'admin.usage.billingModeToken': 'Token',
+  'admin.usage.billingModePerRequest': 'Per request',
+  'admin.usage.billingModeImage': 'Image',
 }
 
 vi.mock('@/api', () => ({
@@ -69,7 +89,19 @@ vi.mock('vue-i18n', async () => {
 
 const AppLayoutStub = { template: '<div><slot /></div>' }
 const TablePageLayoutStub = {
-  template: '<div><slot name="actions" /><slot name="filters" /><slot /></div>',
+  template: '<div><slot name="actions" /><slot name="filters" /><slot name="table" /><slot /></div>',
+}
+const DataTableStub = {
+  props: ['data'],
+  template: `
+    <div>
+      <div v-for="row in data" :key="row.request_id">
+        <slot name="cell-billing_mode" :row="row" />
+        <slot name="cell-tokens" :row="row" />
+        <slot name="cell-cost" :row="row" />
+      </div>
+    </div>
+  `,
 }
 
 describe('user UsageView tooltip', () => {
@@ -146,6 +178,7 @@ describe('user UsageView tooltip', () => {
           EmptyState: true,
           Select: true,
           DateRangePicker: true,
+          DataTable: DataTableStub,
           Icon: true,
           Teleport: true,
         },
@@ -244,6 +277,7 @@ describe('user UsageView tooltip', () => {
           EmptyState: true,
           Select: true,
           DateRangePicker: true,
+          DataTable: DataTableStub,
           Icon: true,
           Teleport: true,
         },
@@ -274,4 +308,233 @@ describe('user UsageView tooltip', () => {
     window.URL.revokeObjectURL = originalRevokeObjectURL
     clickSpy.mockRestore()
   })
+
+  it('exports historical image rows with image billing mode derived from image_count', async () => {
+    const exportedLogs = [
+      {
+        request_id: 'req-user-export-legacy-image',
+        actual_cost: 0.2,
+        total_cost: 0.2,
+        rate_multiplier: 1,
+        service_tier: null,
+        input_cost: 0,
+        output_cost: 0,
+        cache_creation_cost: 0,
+        cache_read_cost: 0,
+        input_tokens: 0,
+        output_tokens: 0,
+        cache_creation_tokens: 0,
+        cache_read_tokens: 0,
+        cache_creation_5m_tokens: 0,
+        cache_creation_1h_tokens: 0,
+        image_count: 1,
+        image_size: null,
+        billing_mode: null,
+        first_token_ms: null,
+        duration_ms: 345,
+        created_at: '2026-03-08T00:00:00Z',
+        model: 'gpt-image-2',
+        reasoning_effort: null,
+        api_key: { name: 'demo-key' },
+      },
+    ]
+
+    query.mockResolvedValue({
+      items: exportedLogs,
+      total: 1,
+      pages: 1,
+    })
+    getStatsByDateRange.mockResolvedValue({
+      total_requests: 1,
+      total_tokens: 0,
+      total_cost: 0.2,
+      avg_duration_ms: 1,
+    })
+    list.mockResolvedValue({ items: [] })
+
+    let exportedBlob: Blob | null = null
+    const originalCreateObjectURL = window.URL.createObjectURL
+    const originalRevokeObjectURL = window.URL.revokeObjectURL
+    window.URL.createObjectURL = vi.fn((blob: Blob | MediaSource) => {
+      exportedBlob = blob as Blob
+      return 'blob:usage-export'
+    }) as typeof window.URL.createObjectURL
+    window.URL.revokeObjectURL = vi.fn(() => {}) as typeof window.URL.revokeObjectURL
+    const clickSpy = vi.spyOn(HTMLAnchorElement.prototype, 'click').mockImplementation(() => {})
+
+    const wrapper = mount(UsageView, {
+      global: {
+        stubs: {
+          AppLayout: AppLayoutStub,
+          TablePageLayout: TablePageLayoutStub,
+          Pagination: true,
+          EmptyState: true,
+          Select: true,
+          DateRangePicker: true,
+          DataTable: DataTableStub,
+          Icon: true,
+          Teleport: true,
+        },
+      },
+    })
+
+    await flushPromises()
+
+    const setupState = (wrapper.vm as any).$?.setupState
+    await setupState.exportToCSV()
+
+    expect(exportedBlob).not.toBeNull()
+    const csv = await new Promise<string>((resolve, reject) => {
+      const reader = new FileReader()
+      reader.onload = () => resolve(String(reader.result))
+      reader.onerror = () => reject(reader.error)
+      reader.readAsText(exportedBlob as Blob)
+    })
+    expect(csv).toContain('Billing Mode')
+    expect(csv).toContain('Image')
+    expect(csv).not.toContain(',Token,0,0,0,0,')
+
+    window.URL.createObjectURL = originalCreateObjectURL
+    window.URL.revokeObjectURL = originalRevokeObjectURL
+    clickSpy.mockRestore()
+  })
+
+  it('does not display a 2K fallback for historical image rows with missing size', async () => {
+    query.mockResolvedValue({
+      items: [
+        {
+          request_id: 'req-user-legacy-missing-image',
+          actual_cost: 0.2,
+          total_cost: 0.2,
+          rate_multiplier: 1,
+          service_tier: null,
+          input_cost: 0,
+          output_cost: 0,
+          cache_creation_cost: 0,
+          cache_read_cost: 0,
+          input_tokens: 0,
+          output_tokens: 0,
+          cache_creation_tokens: 0,
+          cache_read_tokens: 0,
+          cache_creation_5m_tokens: 0,
+          cache_creation_1h_tokens: 0,
+          image_count: 1,
+          image_size: null,
+          image_input_size: null,
+          image_output_size: null,
+          image_size_source: null,
+          image_size_breakdown: null,
+          billing_mode: null,
+          first_token_ms: null,
+          duration_ms: 1,
+          created_at: '2026-03-08T00:00:00Z',
+          model: 'gpt-image-2',
+        },
+      ],
+      total: 1,
+      pages: 1,
+    })
+    getStatsByDateRange.mockResolvedValue({
+      total_requests: 1,
+      total_tokens: 0,
+      total_cost: 0.2,
+      avg_duration_ms: 1,
+    })
+    list.mockResolvedValue({ items: [] })
+
+    const wrapper = mount(UsageView, {
+      global: {
+        stubs: {
+          AppLayout: AppLayoutStub,
+          TablePageLayout: TablePageLayoutStub,
+          Pagination: true,
+          EmptyState: true,
+          Select: true,
+          DateRangePicker: true,
+          DataTable: DataTableStub,
+          Icon: true,
+          Teleport: true,
+        },
+      },
+    })
+
+    await flushPromises()
+    await nextTick()
+
+    const text = wrapper.text()
+    expect(text).toContain('Image')
+    expect(text).toContain('not recorded')
+    expect(text).not.toContain('(2K)')
+  })
+
+  it('shows image billing metadata in the user cost tooltip', async () => {
+    query.mockResolvedValue({
+      items: [],
+      total: 0,
+      pages: 0,
+    })
+    getStatsByDateRange.mockResolvedValue({
+      total_requests: 0,
+      total_tokens: 0,
+      total_cost: 0,
+      avg_duration_ms: 0,
+    })
+    list.mockResolvedValue({ items: [] })
+
+    const wrapper = mount(UsageView, {
+      global: {
+        stubs: {
+          AppLayout: AppLayoutStub,
+          TablePageLayout: TablePageLayoutStub,
+          Pagination: true,
+          EmptyState: true,
+          Select: true,
+          DateRangePicker: true,
+          DataTable: DataTableStub,
+          Icon: true,
+          Teleport: true,
+        },
+      },
+    })
+
+    await flushPromises()
+
+    const setupState = (wrapper.vm as any).$?.setupState
+    setupState.tooltipData = {
+      request_id: 'req-user-output-image',
+      actual_cost: 0.8,
+      total_cost: 0.8,
+      rate_multiplier: 1,
+      service_tier: null,
+      input_cost: 0,
+      output_cost: 0,
+      cache_creation_cost: 0,
+      cache_read_cost: 0,
+      input_tokens: 0,
+      output_tokens: 0,
+      cache_creation_tokens: 0,
+      cache_read_tokens: 0,
+      billing_mode: null,
+      image_count: 2,
+      image_size: '4K',
+      image_input_size: '1024x1024',
+      image_output_size: '3840x2160',
+      image_size_source: 'output',
+      image_size_breakdown: { '4K': 2 },
+    }
+    setupState.tooltipVisible = true
+    await nextTick()
+
+    const text = wrapper.text()
+    expect(text).toContain('Image count')
+    expect(text).toContain('Billing size')
+    expect(text).toContain('4K')
+    expect(text).toContain('Size source')
+    expect(text).toContain('Upstream output')
+    expect(text).toContain('Input size')
+    expect(text).toContain('1024x1024')
+    expect(text).toContain('Output size')
+    expect(text).toContain('3840x2160')
+    expect(text).toContain('4K x 2')
+  })
 })