diff --git a/backend/cmd/server/wire_gen.go b/backend/cmd/server/wire_gen.go
index 465f5e25..6e8be8fc 100644
--- a/backend/cmd/server/wire_gen.go
+++ b/backend/cmd/server/wire_gen.go
@@ -195,7 +195,7 @@ func initializeApplication(buildInfo handler.BuildInfo) (*Application, error) {
 	gatewayService := service.NewGatewayService(accountRepository, groupRepository, usageLogRepository, usageBillingRepository, userRepository, userSubscriptionRepository, userGroupRateRepository, gatewayCache, configConfig, schedulerSnapshotService, concurrencyService, billingService, rateLimitService, billingCacheService, identityService, httpUpstream, deferredService, claudeTokenProvider, sessionLimitCache, rpmCache, digestSessionStore, settingService, tlsFingerprintProfileService, channelService, modelPricingResolver, balanceNotifyService, serviceUserPlatformQuotaRepository)
 	geminiMessagesCompatService := service.NewGeminiMessagesCompatService(accountRepository, groupRepository, gatewayCache, schedulerSnapshotService, geminiTokenProvider, rateLimitService, httpUpstream, antigravityGatewayService, configConfig)
 	opsSystemLogSink := service.ProvideOpsSystemLogSink(opsRepository)
-	opsService := service.NewOpsService(opsRepository, settingRepository, configConfig, accountRepository, userRepository, concurrencyService, gatewayService, openAIGatewayService, geminiMessagesCompatService, antigravityGatewayService, opsSystemLogSink)
+	opsService := service.ProvideOpsService(opsRepository, settingRepository, configConfig, accountRepository, userRepository, concurrencyService, gatewayService, openAIGatewayService, geminiMessagesCompatService, antigravityGatewayService, opsSystemLogSink, settingService)
 	encryptionKey, err := payment.ProvideEncryptionKey(configConfig)
 	if err != nil {
 		return nil, err
diff --git a/backend/internal/repository/scheduler_cache.go b/backend/internal/repository/scheduler_cache.go
index ab01a863..cf19deda 100644
--- a/backend/internal/repository/scheduler_cache.go
+++ b/backend/internal/repository/scheduler_cache.go
@@ -548,6 +548,17 @@ func filterSchedulerExtra(extra map[string]any) map[string]any {
 		"openai_ws_force_http",
 		"openai_responses_mode",
 		"openai_responses_supported",
+		"codex_5h_used_percent",
+		"codex_7d_used_percent",
+		"codex_5h_reset_at",
+		"codex_7d_reset_at",
+		"codex_5h_reset_after_seconds",
+		"codex_7d_reset_after_seconds",
+		"codex_usage_updated_at",
+		"auto_pause_5h_threshold",
+		"auto_pause_7d_threshold",
+		"auto_pause_5h_disabled",
+		"auto_pause_7d_disabled",
 	}
 	filtered := make(map[string]any)
 	for _, key := range keys {
diff --git a/backend/internal/repository/scheduler_cache_unit_test.go b/backend/internal/repository/scheduler_cache_unit_test.go
index 86de87c7..a4667591 100644
--- a/backend/internal/repository/scheduler_cache_unit_test.go
+++ b/backend/internal/repository/scheduler_cache_unit_test.go
@@ -75,3 +75,36 @@ func TestBuildSchedulerMetadataAccount_KeepsSlimGroupMembership(t *testing.T) {
 	require.Equal(t, int64(11), got.AccountGroups[1].GroupID)
 	require.Nil(t, got.Groups)
 }
+
+func TestBuildSchedulerMetadataAccount_KeepsQuotaAutoPauseFields(t *testing.T) {
+	account := service.Account{
+		ID: 88,
+		Extra: map[string]any{
+			"codex_5h_used_percent":        12.34,
+			"codex_7d_used_percent":        56.78,
+			"codex_5h_reset_at":            "2026-05-29T10:00:00Z",
+			"codex_7d_reset_at":            "2026-06-01T10:00:00Z",
+			"codex_5h_reset_after_seconds": 300,
+			"codex_7d_reset_after_seconds": 600,
+			"codex_usage_updated_at":       "2026-05-29T09:00:00Z",
+			"auto_pause_5h_threshold":      0.95,
+			"auto_pause_7d_threshold":      0.96,
+			"auto_pause_5h_disabled":       true,
+			"auto_pause_7d_disabled":       false,
+		},
+	}
+
+	got := buildSchedulerMetadataAccount(account)
+
+	require.Equal(t, 12.34, got.Extra["codex_5h_used_percent"])
+	require.Equal(t, 56.78, got.Extra["codex_7d_used_percent"])
+	require.Equal(t, "2026-05-29T10:00:00Z", got.Extra["codex_5h_reset_at"])
+	require.Equal(t, "2026-06-01T10:00:00Z", got.Extra["codex_7d_reset_at"])
+	require.Equal(t, 300, got.Extra["codex_5h_reset_after_seconds"])
+	require.Equal(t, 600, got.Extra["codex_7d_reset_after_seconds"])
+	require.Equal(t, "2026-05-29T09:00:00Z", got.Extra["codex_usage_updated_at"])
+	require.Equal(t, 0.95, got.Extra["auto_pause_5h_threshold"])
+	require.Equal(t, 0.96, got.Extra["auto_pause_7d_threshold"])
+	require.Equal(t, true, got.Extra["auto_pause_5h_disabled"])
+	require.Equal(t, false, got.Extra["auto_pause_7d_disabled"])
+}
diff --git a/backend/internal/service/openai_account_scheduler.go b/backend/internal/service/openai_account_scheduler.go
index 1eca08b1..47a8142a 100644
--- a/backend/internal/service/openai_account_scheduler.go
+++ b/backend/internal/service/openai_account_scheduler.go
@@ -370,7 +370,6 @@ func (s *defaultOpenAIAccountScheduler) selectBySessionHash(
 		_ = s.service.deleteStickySessionAccountID(ctx, req.GroupID, sessionHash)
 		return nil, nil
 	}
-
 	result, acquireErr := s.service.tryAcquireAccountSlot(ctx, accountID, account.Concurrency)
 	if acquireErr == nil && result != nil && result.Acquired {
 		_ = s.service.refreshStickySessionTTL(ctx, req.GroupID, sessionHash, s.service.openAIWSSessionStickyTTL())
@@ -975,6 +974,13 @@ func (s *defaultOpenAIAccountScheduler) isAccountRequestCompatible(ctx context.C
 	if s != nil && s.service != nil && s.service.isOpenAIAccountRuntimeBlocked(account) {
 		return false
 	}
+	// Quota auto-pause must be evaluated during the initial filter too. Without it the
+	// TopK candidate pool can be filled with paused accounts and the later fresh/DB
+	// rechecks won't reach healthy accounts that fell outside TopK — manifesting as
+	// "no available accounts" even though healthy ones exist.
+	if paused, _ := shouldAutoPauseOpenAIAccountByQuota(ctx, account); paused {
+		return false
+	}
 	if req.RequestedModel != "" && !account.IsModelSupported(req.RequestedModel) {
 		return false
 	}
@@ -1154,6 +1160,7 @@ func (s *OpenAIGatewayService) selectAccountWithScheduler(
 	requiredImageCapability OpenAIImagesCapability,
 	requireCompact bool,
 ) (*AccountSelectionResult, OpenAIAccountScheduleDecision, error) {
+	ctx = s.withOpenAIQuotaAutoPauseContext(ctx)
 	decision := OpenAIAccountScheduleDecision{}
 	scheduler := s.getOpenAIAccountScheduler(ctx)
 	if scheduler == nil {
diff --git a/backend/internal/service/openai_account_scheduler_test.go b/backend/internal/service/openai_account_scheduler_test.go
index fedf7e9c..da5f0a66 100644
--- a/backend/internal/service/openai_account_scheduler_test.go
+++ b/backend/internal/service/openai_account_scheduler_test.go
@@ -691,6 +691,224 @@ func TestOpenAIGatewayService_SelectAccountWithScheduler_SessionStickyRateLimite
 	require.Equal(t, openAIAccountScheduleLayerLoadBalance, decision.Layer)
 }
 
+func TestOpenAIGatewayService_SelectAccountForModelWithExclusions_AutoPauseBy5hThreshold(t *testing.T) {
+	ctx := context.Background()
+	primary := Account{
+		ID:          35001,
+		Platform:    PlatformOpenAI,
+		Type:        AccountTypeAPIKey,
+		Status:      StatusActive,
+		Schedulable: true,
+		Concurrency: 1,
+		Priority:    0,
+		Extra: map[string]any{
+			"codex_5h_used_percent":   95.0,
+			"auto_pause_5h_threshold": 0.95,
+		},
+	}
+	secondary := Account{ID: 35002, Platform: PlatformOpenAI, Type: AccountTypeAPIKey, Status: StatusActive, Schedulable: true, Concurrency: 1, Priority: 5}
+	svc := &OpenAIGatewayService{accountRepo: schedulerTestOpenAIAccountRepo{accounts: []Account{primary, secondary}}, cfg: &config.Config{}}
+
+	account, err := svc.SelectAccountForModelWithExclusions(ctx, nil, "", "gpt-5.1", nil)
+	require.NoError(t, err)
+	require.NotNil(t, account)
+	require.Equal(t, int64(35002), account.ID)
+}
+
+func TestOpenAIGatewayService_SelectAccountForModelWithExclusions_AllowsBelow5hThreshold(t *testing.T) {
+	ctx := context.Background()
+	primary := Account{
+		ID:          35101,
+		Platform:    PlatformOpenAI,
+		Type:        AccountTypeAPIKey,
+		Status:      StatusActive,
+		Schedulable: true,
+		Concurrency: 1,
+		Priority:    0,
+		Extra: map[string]any{
+			"codex_5h_used_percent":   80.0,
+			"auto_pause_5h_threshold": 0.95,
+		},
+	}
+	secondary := Account{ID: 35102, Platform: PlatformOpenAI, Type: AccountTypeAPIKey, Status: StatusActive, Schedulable: true, Concurrency: 1, Priority: 5}
+	svc := &OpenAIGatewayService{accountRepo: schedulerTestOpenAIAccountRepo{accounts: []Account{primary, secondary}}, cfg: &config.Config{}}
+
+	account, err := svc.SelectAccountForModelWithExclusions(ctx, nil, "", "gpt-5.1", nil)
+	require.NoError(t, err)
+	require.NotNil(t, account)
+	require.Equal(t, int64(35101), account.ID)
+}
+
+func TestOpenAIGatewayService_SelectAccountForModelWithExclusions_AutoPauseBy7dThreshold(t *testing.T) {
+	ctx := context.Background()
+	primary := Account{
+		ID:          35201,
+		Platform:    PlatformOpenAI,
+		Type:        AccountTypeAPIKey,
+		Status:      StatusActive,
+		Schedulable: true,
+		Concurrency: 1,
+		Priority:    0,
+		Extra: map[string]any{
+			"codex_7d_used_percent":   95.0,
+			"auto_pause_7d_threshold": 0.95,
+		},
+	}
+	secondary := Account{ID: 35202, Platform: PlatformOpenAI, Type: AccountTypeAPIKey, Status: StatusActive, Schedulable: true, Concurrency: 1, Priority: 5}
+	svc := &OpenAIGatewayService{accountRepo: schedulerTestOpenAIAccountRepo{accounts: []Account{primary, secondary}}, cfg: &config.Config{}}
+
+	account, err := svc.SelectAccountForModelWithExclusions(ctx, nil, "", "gpt-5.1", nil)
+	require.NoError(t, err)
+	require.NotNil(t, account)
+	require.Equal(t, int64(35202), account.ID)
+}
+
+func TestOpenAIGatewayService_SelectAccountForModelWithExclusions_UnconfiguredThresholdKeepsLegacyBehavior(t *testing.T) {
+	ctx := context.Background()
+	primary := Account{ID: 35301, Platform: PlatformOpenAI, Type: AccountTypeAPIKey, Status: StatusActive, Schedulable: true, Concurrency: 1, Priority: 0, Extra: map[string]any{"codex_5h_used_percent": 99.0, "codex_7d_used_percent": 99.0}}
+	secondary := Account{ID: 35302, Platform: PlatformOpenAI, Type: AccountTypeAPIKey, Status: StatusActive, Schedulable: true, Concurrency: 1, Priority: 5}
+	svc := &OpenAIGatewayService{accountRepo: schedulerTestOpenAIAccountRepo{accounts: []Account{primary, secondary}}, cfg: &config.Config{}}
+
+	account, err := svc.SelectAccountForModelWithExclusions(ctx, nil, "", "gpt-5.1", nil)
+	require.NoError(t, err)
+	require.NotNil(t, account)
+	require.Equal(t, int64(35301), account.ID)
+}
+
+func TestOpenAIGatewayService_SelectAccountForModelWithExclusions_UsesGlobalDefaultThreshold(t *testing.T) {
+	ctx := withOpenAIQuotaAutoPauseSettings(context.Background(), OpsOpenAIAccountQuotaAutoPauseSettings{DefaultThreshold5h: 0.95})
+	primary := Account{
+		ID:          35401,
+		Platform:    PlatformOpenAI,
+		Type:        AccountTypeAPIKey,
+		Status:      StatusActive,
+		Schedulable: true,
+		Concurrency: 1,
+		Priority:    0,
+		Extra: map[string]any{
+			"codex_5h_used_percent": 95.0,
+		},
+	}
+	secondary := Account{ID: 35402, Platform: PlatformOpenAI, Type: AccountTypeAPIKey, Status: StatusActive, Schedulable: true, Concurrency: 1, Priority: 5}
+	svc := &OpenAIGatewayService{accountRepo: schedulerTestOpenAIAccountRepo{accounts: []Account{primary, secondary}}, cfg: &config.Config{}}
+
+	account, err := svc.SelectAccountForModelWithExclusions(ctx, nil, "", "gpt-5.1", nil)
+	require.NoError(t, err)
+	require.NotNil(t, account)
+	require.Equal(t, int64(35402), account.ID)
+}
+
+// Regression: a per-account explicit-disable flag exempts the account from auto-pause
+// even when a global default threshold is set. Without this, "leave threshold blank"
+// silently falls back to global default and admins have no way to whitelist a single
+// account.
+func TestOpenAIGatewayService_SelectAccountForModelWithExclusions_PerAccountDisableOverridesGlobalDefault(t *testing.T) {
+	ctx := withOpenAIQuotaAutoPauseSettings(context.Background(), OpsOpenAIAccountQuotaAutoPauseSettings{DefaultThreshold5h: 0.95})
+	// Account has high usage AND no per-account threshold (would normally fall back to
+	// the global default and get paused), but the explicit disable flag is set.
+	primary := Account{
+		ID:          35701,
+		Platform:    PlatformOpenAI,
+		Type:        AccountTypeAPIKey,
+		Status:      StatusActive,
+		Schedulable: true,
+		Concurrency: 1,
+		Priority:    0,
+		Extra: map[string]any{
+			"codex_5h_used_percent":  99.0,
+			"auto_pause_5h_disabled": true,
+		},
+	}
+	secondary := Account{ID: 35702, Platform: PlatformOpenAI, Type: AccountTypeAPIKey, Status: StatusActive, Schedulable: true, Concurrency: 1, Priority: 5}
+	svc := &OpenAIGatewayService{accountRepo: schedulerTestOpenAIAccountRepo{accounts: []Account{primary, secondary}}, cfg: &config.Config{}}
+
+	account, err := svc.SelectAccountForModelWithExclusions(ctx, nil, "", "gpt-5.1", nil)
+	require.NoError(t, err)
+	require.NotNil(t, account)
+	require.Equal(t, int64(35701), account.ID)
+}
+
+// Disable is per-window: disabling only 5h must still allow 7d auto-pause to fire.
+func TestOpenAIGatewayService_SelectAccountForModelWithExclusions_PerWindowDisableScoped(t *testing.T) {
+	ctx := context.Background()
+	primary := Account{
+		ID:          35801,
+		Platform:    PlatformOpenAI,
+		Type:        AccountTypeAPIKey,
+		Status:      StatusActive,
+		Schedulable: true,
+		Concurrency: 1,
+		Priority:    0,
+		Extra: map[string]any{
+			"codex_5h_used_percent":   99.0,
+			"codex_7d_used_percent":   99.0,
+			"auto_pause_5h_disabled":  true,
+			"auto_pause_7d_threshold": 0.95,
+		},
+	}
+	secondary := Account{ID: 35802, Platform: PlatformOpenAI, Type: AccountTypeAPIKey, Status: StatusActive, Schedulable: true, Concurrency: 1, Priority: 5}
+	svc := &OpenAIGatewayService{accountRepo: schedulerTestOpenAIAccountRepo{accounts: []Account{primary, secondary}}, cfg: &config.Config{}}
+
+	account, err := svc.SelectAccountForModelWithExclusions(ctx, nil, "", "gpt-5.1", nil)
+	require.NoError(t, err)
+	require.NotNil(t, account)
+	require.Equal(t, int64(35802), account.ID, "7d auto-pause must still fire even though 5h is disabled")
+}
+
+func TestOpenAIGatewayService_SelectAccountForModelWithExclusions_StaleUsageWindowResetSkipsPause(t *testing.T) {
+	ctx := context.Background()
+	// Usage is over threshold but the window's reset time has already passed, so the
+	// cached percentage is stale (the real window rolled over) and the account must NOT
+	// stay paused — otherwise it could be skipped forever with no traffic to refresh it.
+	primary := Account{
+		ID:          35501,
+		Platform:    PlatformOpenAI,
+		Type:        AccountTypeAPIKey,
+		Status:      StatusActive,
+		Schedulable: true,
+		Concurrency: 1,
+		Priority:    0,
+		Extra: map[string]any{
+			"codex_5h_used_percent":   99.0,
+			"auto_pause_5h_threshold": 0.95,
+			"codex_5h_reset_at":       time.Now().Add(-time.Minute).Format(time.RFC3339),
+		},
+	}
+	secondary := Account{ID: 35502, Platform: PlatformOpenAI, Type: AccountTypeAPIKey, Status: StatusActive, Schedulable: true, Concurrency: 1, Priority: 5}
+	svc := &OpenAIGatewayService{accountRepo: schedulerTestOpenAIAccountRepo{accounts: []Account{primary, secondary}}, cfg: &config.Config{}}
+
+	account, err := svc.SelectAccountForModelWithExclusions(ctx, nil, "", "gpt-5.1", nil)
+	require.NoError(t, err)
+	require.NotNil(t, account)
+	require.Equal(t, int64(35501), account.ID)
+}
+
+func TestOpenAIGatewayService_SelectAccountForModelWithExclusions_FreshUsageWindowStillPauses(t *testing.T) {
+	ctx := context.Background()
+	// Same as above but the window has not reset yet, so the account stays paused.
+	primary := Account{
+		ID:          35601,
+		Platform:    PlatformOpenAI,
+		Type:        AccountTypeAPIKey,
+		Status:      StatusActive,
+		Schedulable: true,
+		Concurrency: 1,
+		Priority:    0,
+		Extra: map[string]any{
+			"codex_5h_used_percent":   99.0,
+			"auto_pause_5h_threshold": 0.95,
+			"codex_5h_reset_at":       time.Now().Add(time.Hour).Format(time.RFC3339),
+		},
+	}
+	secondary := Account{ID: 35602, Platform: PlatformOpenAI, Type: AccountTypeAPIKey, Status: StatusActive, Schedulable: true, Concurrency: 1, Priority: 5}
+	svc := &OpenAIGatewayService{accountRepo: schedulerTestOpenAIAccountRepo{accounts: []Account{primary, secondary}}, cfg: &config.Config{}}
+
+	account, err := svc.SelectAccountForModelWithExclusions(ctx, nil, "", "gpt-5.1", nil)
+	require.NoError(t, err)
+	require.NotNil(t, account)
+	require.Equal(t, int64(35602), account.ID)
+}
+
 func TestOpenAIGatewayService_SelectAccountForModelWithExclusions_SkipsFreshlyRateLimitedSnapshotCandidate(t *testing.T) {
 	ctx := context.Background()
 	groupID := int64(10102)
@@ -1238,6 +1456,85 @@ func TestOpenAIGatewayService_SelectAccountWithScheduler_LoadBalanceTopKFallback
 	}
 }
 
+// Regression: TopK initial filter must drop quota-auto-paused accounts. Otherwise
+// the candidate pool is filled with paused accounts, healthy accounts fall outside
+// TopK, and the scheduler returns "no available accounts" even though healthy ones
+// exist.
+func TestOpenAIGatewayService_SelectAccountWithScheduler_LoadBalanceTopKExcludesQuotaPaused(t *testing.T) {
+	ctx := context.Background()
+	groupID := int64(110)
+	accounts := []Account{
+		{
+			ID:          37001,
+			Platform:    PlatformOpenAI,
+			Type:        AccountTypeAPIKey,
+			Status:      StatusActive,
+			Schedulable: true,
+			Concurrency: 1,
+			Priority:    0,
+			Extra: map[string]any{
+				"codex_5h_used_percent":   96.0,
+				"auto_pause_5h_threshold": 0.95,
+			},
+		},
+		{
+			ID:          37002,
+			Platform:    PlatformOpenAI,
+			Type:        AccountTypeAPIKey,
+			Status:      StatusActive,
+			Schedulable: true,
+			Concurrency: 1,
+			Priority:    5,
+		},
+	}
+
+	cfg := &config.Config{}
+	cfg.Gateway.OpenAIWS.LBTopK = 1 // TopK=1 makes the bug fatal: paused account would crowd out the healthy one entirely
+	cfg.Gateway.OpenAIWS.SchedulerScoreWeights.Priority = 0.4
+	cfg.Gateway.OpenAIWS.SchedulerScoreWeights.Load = 1.0
+	cfg.Gateway.OpenAIWS.SchedulerScoreWeights.Queue = 1.0
+
+	concurrencyCache := schedulerTestConcurrencyCache{
+		loadMap: map[int64]*AccountLoadInfo{
+			37001: {AccountID: 37001, LoadRate: 5, WaitingCount: 0},
+			37002: {AccountID: 37002, LoadRate: 5, WaitingCount: 0},
+		},
+		acquireResults: map[int64]bool{
+			37002: true,
+		},
+	}
+
+	svc := &OpenAIGatewayService{
+		accountRepo:        schedulerTestOpenAIAccountRepo{accounts: accounts},
+		cache:              &schedulerTestGatewayCache{},
+		cfg:                cfg,
+		rateLimitService:   newOpenAIAdvancedSchedulerRateLimitService("true"),
+		concurrencyService: NewConcurrencyService(concurrencyCache),
+	}
+
+	selection, decision, err := svc.SelectAccountWithScheduler(
+		ctx,
+		&groupID,
+		"",
+		"",
+		"gpt-5.1",
+		nil,
+		OpenAIUpstreamTransportAny,
+		false,
+	)
+	require.NoError(t, err)
+	require.NotNil(t, selection)
+	require.NotNil(t, selection.Account)
+	require.Equal(t, int64(37002), selection.Account.ID)
+	require.Equal(t, openAIAccountScheduleLayerLoadBalance, decision.Layer)
+	// Only the healthy account should ever enter the candidate pool; the paused one
+	// must be filtered out at the initial-filter stage.
+	require.Equal(t, 1, decision.CandidateCount)
+	if selection.ReleaseFunc != nil {
+		selection.ReleaseFunc()
+	}
+}
+
 func TestOpenAIGatewayService_OpenAIAccountSchedulerMetrics(t *testing.T) {
 	ctx := context.Background()
 	groupID := int64(12)
diff --git a/backend/internal/service/openai_gateway_service.go b/backend/internal/service/openai_gateway_service.go
index 6d618ee4..cd5a4015 100644
--- a/backend/internal/service/openai_gateway_service.go
+++ b/backend/internal/service/openai_gateway_service.go
@@ -1290,7 +1290,7 @@ func (s *OpenAIGatewayService) SelectAccountForModel(ctx context.Context, groupI
 // SelectAccountForModelWithExclusions selects an account supporting the requested model while excluding specified accounts.
 // SelectAccountForModelWithExclusions 选择支持指定模型的账号，同时排除指定的账号。
 func (s *OpenAIGatewayService) SelectAccountForModelWithExclusions(ctx context.Context, groupID *int64, sessionHash string, requestedModel string, excludedIDs map[int64]struct{}) (*Account, error) {
-	return s.selectAccountForModelWithExclusions(ctx, groupID, sessionHash, requestedModel, excludedIDs, false, 0, "")
+	return s.selectAccountForModelWithExclusions(s.withOpenAIQuotaAutoPauseContext(ctx), groupID, sessionHash, requestedModel, excludedIDs, false, 0, "")
 }
 
 // noAvailableOpenAISelectionError builds the standard "no account available" error
@@ -1327,6 +1327,17 @@ func isOpenAIAccountEligibleForRequest(ctx context.Context, account *Account, re
 	if account == nil || !account.IsOpenAI() || !account.IsSchedulableForModelWithContext(ctx, requestedModel) {
 		return false
 	}
+	if paused, reason := shouldAutoPauseOpenAIAccountByQuota(ctx, account); paused {
+		// Debug level: this fires per-candidate on the scheduling hot path, so Info
+		// would amplify into log spam once several accounts cross the threshold.
+		slog.Debug("account_auto_paused_by_quota",
+			"account_id", account.ID,
+			"window", reason.window,
+			"threshold", reason.threshold,
+			"utilization", reason.utilization,
+		)
+		return false
+	}
 	if requestedModel != "" && !account.IsModelSupported(requestedModel) {
 		return false
 	}
@@ -1339,6 +1350,201 @@ func isOpenAIAccountEligibleForRequest(ctx context.Context, account *Account, re
 	return true
 }
 
+type openAIQuotaAutoPauseDecision struct {
+	window      string
+	threshold   float64
+	utilization float64
+}
+
+func shouldAutoPauseOpenAIAccountByQuota(ctx context.Context, account *Account) (bool, openAIQuotaAutoPauseDecision) {
+	if account == nil || !account.IsOpenAI() {
+		return false, openAIQuotaAutoPauseDecision{}
+	}
+	// Per-account explicit-disable flags must take precedence over the global default.
+	// Without these, leaving the account threshold blank means "use global default",
+	// so an admin has no way to exempt a single account from auto-pause once a global
+	// default exists. The disable flag is per-window so an account can opt out of
+	// only 5h or only 7d auto-pause.
+	disabled5h := resolveAccountExtraBool(account.Extra, "auto_pause_5h_disabled")
+	disabled7d := resolveAccountExtraBool(account.Extra, "auto_pause_7d_disabled")
+	threshold5h, threshold7d := resolveOpenAIQuotaAutoPauseThresholds(ctx, account)
+	now := time.Now()
+	if !disabled5h && threshold5h > 0 {
+		if utilization, ok := resolveOpenAIQuotaUtilization(account.Extra, "5h", now); ok && utilization >= threshold5h {
+			return true, openAIQuotaAutoPauseDecision{window: "5h", threshold: threshold5h, utilization: utilization}
+		}
+	}
+	if !disabled7d && threshold7d > 0 {
+		if utilization, ok := resolveOpenAIQuotaUtilization(account.Extra, "7d", now); ok && utilization >= threshold7d {
+			return true, openAIQuotaAutoPauseDecision{window: "7d", threshold: threshold7d, utilization: utilization}
+		}
+	}
+	return false, openAIQuotaAutoPauseDecision{}
+}
+
+// resolveAccountExtraBool reads a bool-like value from account extra, tolerating
+// the few shapes JSON unmarshalling may produce (real bool, "true"/"false"
+// strings, 0/1 numbers).
+func resolveAccountExtraBool(extra map[string]any, key string) bool {
+	if len(extra) == 0 {
+		return false
+	}
+	value, ok := extra[key]
+	if !ok || value == nil {
+		return false
+	}
+	switch v := value.(type) {
+	case bool:
+		return v
+	case string:
+		parsed, err := strconv.ParseBool(strings.TrimSpace(v))
+		return err == nil && parsed
+	case float64:
+		return v != 0
+	case float32:
+		return v != 0
+	case int:
+		return v != 0
+	case int64:
+		return v != 0
+	case json.Number:
+		if i, err := v.Int64(); err == nil {
+			return i != 0
+		}
+	}
+	return false
+}
+
+func resolveOpenAIQuotaAutoPauseThresholds(ctx context.Context, account *Account) (float64, float64) {
+	threshold5h, _ := resolveAccountExtraNumber(account.Extra, "auto_pause_5h_threshold")
+	threshold7d, _ := resolveAccountExtraNumber(account.Extra, "auto_pause_7d_threshold")
+	threshold5h = clamp01(threshold5h)
+	threshold7d = clamp01(threshold7d)
+	if threshold5h > 0 && threshold7d > 0 {
+		return threshold5h, threshold7d
+	}
+	settings := openAIQuotaAutoPauseSettingsFromContext(ctx)
+	if threshold5h <= 0 {
+		threshold5h = clamp01(settings.DefaultThreshold5h)
+	}
+	if threshold7d <= 0 {
+		threshold7d = clamp01(settings.DefaultThreshold7d)
+	}
+	return threshold5h, threshold7d
+}
+
+func resolveAccountExtraNumber(extra map[string]any, keys ...string) (float64, bool) {
+	if len(extra) == 0 {
+		return 0, false
+	}
+	for _, key := range keys {
+		value, ok := extra[key]
+		if !ok || value == nil {
+			continue
+		}
+		switch v := value.(type) {
+		case float64:
+			return v, true
+		case float32:
+			return float64(v), true
+		case int:
+			return float64(v), true
+		case int64:
+			return float64(v), true
+		case json.Number:
+			parsed, err := v.Float64()
+			if err == nil {
+				return parsed, true
+			}
+		case string:
+			parsed, err := strconv.ParseFloat(strings.TrimSpace(v), 64)
+			if err == nil {
+				return parsed, true
+			}
+		}
+	}
+	return 0, false
+}
+
+// resolveOpenAIQuotaUtilization returns the current utilization ratio (0..1) for the
+// given Codex usage window. ok=false means there is no usable signal to pause on:
+// either no snapshot exists, or the window has already rolled over so the cached
+// percentage is stale. The stale guard matters because a paused account stops
+// receiving requests, so its snapshot is never refreshed from upstream headers —
+// without this check an old used_percent would keep the account paused forever even
+// after the real window reset.
+func resolveOpenAIQuotaUtilization(extra map[string]any, window string, now time.Time) (float64, bool) {
+	usedPercent := readOpenAIQuotaUsedPercent(extra, window)
+	if usedPercent <= 0 {
+		return 0, false
+	}
+	if openAIQuotaWindowReset(extra, window, now) {
+		return 0, false
+	}
+	return usedPercent / 100, true
+}
+
+// openAIQuotaWindowReset reports whether the Codex usage window's reset time has
+// already passed relative to now. It prefers the absolute codex_<window>_reset_at
+// timestamp and falls back to codex_<window>_reset_after_seconds anchored at
+// codex_usage_updated_at, mirroring AccountUsageService's window-progress logic.
+func openAIQuotaWindowReset(extra map[string]any, window string, now time.Time) bool {
+	if len(extra) == 0 {
+		return false
+	}
+	if resetAtRaw, ok := extra["codex_"+window+"_reset_at"]; ok {
+		if resetAt, err := parseTime(fmt.Sprint(resetAtRaw)); err == nil {
+			return !now.Before(resetAt)
+		}
+	}
+	resetAfter := parseExtraInt(extra["codex_"+window+"_reset_after_seconds"])
+	if resetAfter <= 0 {
+		return false
+	}
+	base := now
+	if updatedRaw, ok := extra["codex_usage_updated_at"]; ok {
+		if updatedAt, err := parseTime(fmt.Sprint(updatedRaw)); err == nil {
+			base = updatedAt
+		}
+	}
+	resetAt := base.Add(time.Duration(resetAfter) * time.Second)
+	return !now.Before(resetAt)
+}
+
+func readOpenAIQuotaUsedPercent(extra map[string]any, window string) float64 {
+	if len(extra) == 0 {
+		return 0
+	}
+	if value, ok := resolveAccountExtraNumber(extra, "codex_"+window+"_used_percent"); ok {
+		return value
+	}
+	return 0
+}
+
+type openAIQuotaAutoPauseCtxKey struct{}
+
+func withOpenAIQuotaAutoPauseSettings(ctx context.Context, settings OpsOpenAIAccountQuotaAutoPauseSettings) context.Context {
+	if ctx == nil {
+		ctx = context.Background()
+	}
+	return context.WithValue(ctx, openAIQuotaAutoPauseCtxKey{}, settings)
+}
+
+func openAIQuotaAutoPauseSettingsFromContext(ctx context.Context) OpsOpenAIAccountQuotaAutoPauseSettings {
+	if ctx == nil {
+		return OpsOpenAIAccountQuotaAutoPauseSettings{}
+	}
+	settings, _ := ctx.Value(openAIQuotaAutoPauseCtxKey{}).(OpsOpenAIAccountQuotaAutoPauseSettings)
+	return settings
+}
+
+func (s *OpenAIGatewayService) withOpenAIQuotaAutoPauseContext(ctx context.Context) context.Context {
+	if s == nil || s.settingService == nil {
+		return ctx
+	}
+	return withOpenAIQuotaAutoPauseSettings(ctx, s.settingService.GetOpenAIQuotaAutoPauseSettings(ctx))
+}
+
 // prioritizeOpenAICompactAccounts re-orders a slice so that accounts with known
 // compact support are tried first, followed by unknown, then explicitly unsupported.
 // The relative order within each tier is preserved.
@@ -1587,7 +1793,7 @@ func (s *OpenAIGatewayService) isBetterAccount(candidate, current *Account) bool
 
 // SelectAccountWithLoadAwareness selects an account with load-awareness and wait plan.
 func (s *OpenAIGatewayService) SelectAccountWithLoadAwareness(ctx context.Context, groupID *int64, sessionHash string, requestedModel string, excludedIDs map[int64]struct{}) (*AccountSelectionResult, error) {
-	return s.selectAccountWithLoadAwareness(ctx, groupID, sessionHash, requestedModel, excludedIDs, false, "")
+	return s.selectAccountWithLoadAwareness(s.withOpenAIQuotaAutoPauseContext(ctx), groupID, sessionHash, requestedModel, excludedIDs, false, "")
 }
 
 func (s *OpenAIGatewayService) selectAccountWithLoadAwareness(ctx context.Context, groupID *int64, sessionHash string, requestedModel string, excludedIDs map[int64]struct{}, requireCompact bool, requiredCapability OpenAIEndpointCapability) (*AccountSelectionResult, error) {
diff --git a/backend/internal/service/openai_ws_account_sticky_test.go b/backend/internal/service/openai_ws_account_sticky_test.go
index c8b28a46..6fc44298 100644
--- a/backend/internal/service/openai_ws_account_sticky_test.go
+++ b/backend/internal/service/openai_ws_account_sticky_test.go
@@ -48,6 +48,46 @@ func TestOpenAIGatewayService_SelectAccountByPreviousResponseID_Hit(t *testing.T
 	}
 }
 
+func TestOpenAIGatewayService_SelectAccountByPreviousResponseID_QuotaAutoPausedMiss(t *testing.T) {
+	ctx := context.Background()
+	groupID := int64(23)
+	account := Account{
+		ID:          77,
+		Platform:    PlatformOpenAI,
+		Type:        AccountTypeAPIKey,
+		Status:      StatusActive,
+		Schedulable: true,
+		Concurrency: 2,
+		Extra: map[string]any{
+			"openai_apikey_responses_websockets_v2_enabled": true,
+			"codex_5h_used_percent":                         96.0,
+			"auto_pause_5h_threshold":                       0.95,
+		},
+	}
+	cache := &stubGatewayCache{}
+	store := NewOpenAIWSStateStore(cache)
+	cfg := newOpenAIWSV2TestConfig()
+	svc := &OpenAIGatewayService{
+		accountRepo:        stubOpenAIAccountRepo{accounts: []Account{account}},
+		cache:              cache,
+		cfg:                cfg,
+		concurrencyService: NewConcurrencyService(stubConcurrencyCache{}),
+		openaiWSStateStore: store,
+	}
+
+	require.NoError(t, store.BindResponseAccount(ctx, groupID, "resp_prev_quota", account.ID, time.Hour))
+
+	selection, err := svc.SelectAccountByPreviousResponseID(ctx, &groupID, "resp_prev_quota", "gpt-5.1", nil, false)
+	require.NoError(t, err)
+	require.Nil(t, selection, "超过 5h 配额阈值的账号不应继续命中 previous_response_id 粘连")
+
+	// Auto-pause is transient, so the binding is preserved: the chain can resume on the
+	// same account once the quota window resets.
+	boundAccountID, getErr := store.GetResponseAccount(ctx, groupID, "resp_prev_quota")
+	require.NoError(t, getErr)
+	require.Equal(t, account.ID, boundAccountID)
+}
+
 func TestOpenAIGatewayService_SelectAccountByPreviousResponseID_RateLimitedMiss(t *testing.T) {
 	ctx := context.Background()
 	groupID := int64(23)
diff --git a/backend/internal/service/openai_ws_forwarder.go b/backend/internal/service/openai_ws_forwarder.go
index aa8e326b..dd2f45fa 100644
--- a/backend/internal/service/openai_ws_forwarder.go
+++ b/backend/internal/service/openai_ws_forwarder.go
@@ -4060,6 +4060,13 @@ func (s *OpenAIGatewayService) selectAccountByPreviousResponseIDForCapability(
 	if !account.SupportsOpenAIEndpointCapability(requiredCapability) {
 		return nil, nil
 	}
+	// Quota auto-pause must also gate the previous_response_id sticky path; otherwise an
+	// account over its 5h/7d threshold keeps serving the same response chain even though
+	// normal scheduling skips it. Pause is transient, so fall through to normal scheduling
+	// without deleting the binding (the window may reset before the next turn).
+	if paused, _ := shouldAutoPauseOpenAIAccountByQuota(ctx, account); paused {
+		return nil, nil
+	}
 	if s.schedulerSnapshot != nil && s.accountRepo != nil {
 		latest, latestErr := s.accountRepo.GetByID(ctx, account.ID)
 		if latestErr != nil || latest == nil {
@@ -4076,6 +4083,9 @@ func (s *OpenAIGatewayService) selectAccountByPreviousResponseIDForCapability(
 		if !latest.SupportsOpenAIEndpointCapability(requiredCapability) {
 			return nil, nil
 		}
+		if paused, _ := shouldAutoPauseOpenAIAccountByQuota(ctx, latest); paused {
+			return nil, nil
+		}
 		if s.isOpenAIAccountRuntimeBlocked(latest) {
 			_ = store.DeleteResponseAccount(ctx, derefGroupID(groupID), responseID)
 			return nil, nil
diff --git a/backend/internal/service/ops_service.go b/backend/internal/service/ops_service.go
index 1cea72fa..2d7c5bd4 100644
--- a/backend/internal/service/ops_service.go
+++ b/backend/internal/service/ops_service.go
@@ -41,6 +41,11 @@ type OpsService struct {
 	// cleanupReloader 由 wire 在 OpsCleanupService 构造完成后通过 SetCleanupReloader 注入。
 	// 解耦避免 OpsService -> OpsCleanupService 的硬依赖（cleanup 也读 settings，会循环）。
 	cleanupReloader CleanupReloader
+
+	// quotaAutoPauseSink 由 wire 注入（通常是 SettingService.SetOpenAIQuotaAutoPauseSettings）。
+	// UpdateOpsAdvancedSettings 写入新配置后调用，把最新的 quota auto-pause 全局默认阈值
+	// 立即同步到调度热路径读取的内存缓存，避免下次请求才能感知新值。
+	quotaAutoPauseSink func(OpsOpenAIAccountQuotaAutoPauseSettings)
 }
 
 // CleanupReloader 由 OpsCleanupService 实现。
@@ -57,6 +62,16 @@ func (s *OpsService) SetCleanupReloader(r CleanupReloader) {
 	s.cleanupReloader = r
 }
 
+// SetOpenAIQuotaAutoPauseSettingsSink 由 wire 注入，把最新的 quota auto-pause 全局默认
+// 阈值 push 到调度热路径读取的内存缓存。同 SetCleanupReloader 的解耦目的：避免 OpsService
+// 持有 *SettingService 引入循环依赖。
+func (s *OpsService) SetOpenAIQuotaAutoPauseSettingsSink(sink func(OpsOpenAIAccountQuotaAutoPauseSettings)) {
+	if s == nil {
+		return
+	}
+	s.quotaAutoPauseSink = sink
+}
+
 func NewOpsService(
 	opsRepo OpsRepository,
 	settingRepo SettingRepository,
diff --git a/backend/internal/service/ops_settings.go b/backend/internal/service/ops_settings.go
index 68c1d9dd..472f4e32 100644
--- a/backend/internal/service/ops_settings.go
+++ b/backend/internal/service/ops_settings.go
@@ -369,6 +369,7 @@ func defaultOpsAdvancedSettings() *OpsAdvancedSettings {
 		Aggregation: OpsAggregationSettings{
 			AggregationEnabled: false,
 		},
+		OpenAIAccountQuotaAutoPause:     OpsOpenAIAccountQuotaAutoPauseSettings{},
 		IgnoreCountTokensErrors:         true,  // count_tokens 404 是预期行为，默认忽略
 		IgnoreContextCanceled:           true,  // Default to true - client disconnects are not errors
 		IgnoreNoAvailableAccounts:       false, // Default to false - this is a real routing issue
@@ -384,6 +385,8 @@ func normalizeOpsAdvancedSettings(cfg *OpsAdvancedSettings) {
 	if cfg == nil {
 		return
 	}
+	cfg.OpenAIAccountQuotaAutoPause.DefaultThreshold5h = clampOpsQuotaAutoPauseThreshold(cfg.OpenAIAccountQuotaAutoPause.DefaultThreshold5h)
+	cfg.OpenAIAccountQuotaAutoPause.DefaultThreshold7d = clampOpsQuotaAutoPauseThreshold(cfg.OpenAIAccountQuotaAutoPause.DefaultThreshold7d)
 	cfg.DataRetention.CleanupSchedule = strings.TrimSpace(cfg.DataRetention.CleanupSchedule)
 	if cfg.DataRetention.CleanupSchedule == "" {
 		cfg.DataRetention.CleanupSchedule = opsCleanupDefaultSchedule
@@ -405,6 +408,16 @@ func normalizeOpsAdvancedSettings(cfg *OpsAdvancedSettings) {
 	}
 }
 
+func clampOpsQuotaAutoPauseThreshold(value float64) float64 {
+	if value <= 0 {
+		return 0
+	}
+	if value > 1 {
+		return 1
+	}
+	return value
+}
+
 func validateOpsAdvancedSettings(cfg *OpsAdvancedSettings) error {
 	if cfg == nil {
 		return errors.New("invalid config")
@@ -477,6 +490,12 @@ func (s *OpsService) UpdateOpsAdvancedSettings(ctx context.Context, cfg *OpsAdva
 	if err := s.settingRepo.Set(ctx, SettingKeyOpsAdvancedSettings, string(raw)); err != nil {
 		return nil, err
 	}
+	// Push the new quota auto-pause settings straight into the in-memory cache that
+	// the OpenAI scheduling hot path reads, so the next request observes the new value
+	// without waiting for the background refresher's TTL.
+	if s.quotaAutoPauseSink != nil {
+		s.quotaAutoPauseSink(cfg.OpenAIAccountQuotaAutoPause)
+	}
 
 	// notify cleanup service to reload schedule/enabled.
 	if s.cleanupReloader != nil {
diff --git a/backend/internal/service/ops_settings_advanced_test.go b/backend/internal/service/ops_settings_advanced_test.go
index 06cc545b..62803f94 100644
--- a/backend/internal/service/ops_settings_advanced_test.go
+++ b/backend/internal/service/ops_settings_advanced_test.go
@@ -4,6 +4,9 @@ import (
 	"context"
 	"encoding/json"
 	"testing"
+	"time"
+
+	"github.com/Wei-Shaw/sub2api/internal/config"
 )
 
 func TestGetOpsAdvancedSettings_DefaultHidesOpenAITokenStats(t *testing.T) {
@@ -95,3 +98,64 @@ func TestGetOpsAdvancedSettings_BackfillsNewDisplayFlagsFromDefaults(t *testing.
 		t.Fatalf("DisplayAlertEvents = false, want true default backfill")
 	}
 }
+
+func TestGetOpenAIQuotaAutoPauseSettings_ReadsDefaultsFromOpsAdvancedSettings(t *testing.T) {
+	repo := newRuntimeSettingRepoStub()
+	repo.values[SettingKeyOpsAdvancedSettings] = `{"openai_account_quota_auto_pause":{"default_threshold_5h":0.95,"default_threshold_7d":0.9}}`
+	svc := NewSettingService(repo, &config.Config{})
+
+	// Warm the in-memory cache synchronously so the assertion below is deterministic.
+	// GetOpenAIQuotaAutoPauseSettings is non-blocking on the hot path (returns the
+	// cached value, refreshes asynchronously); for tests and startup, Warm is the
+	// synchronous entry point that guarantees a populated cache.
+	settings := svc.WarmOpenAIQuotaAutoPauseSettings(context.Background())
+	if settings.DefaultThreshold5h != 0.95 {
+		t.Fatalf("DefaultThreshold5h = %v, want 0.95", settings.DefaultThreshold5h)
+	}
+	if settings.DefaultThreshold7d != 0.9 {
+		t.Fatalf("DefaultThreshold7d = %v, want 0.9", settings.DefaultThreshold7d)
+	}
+
+	// Subsequent Get must hit the warm cache and return the same value without any DB
+	// access — that's the hot-path invariant.
+	cached := svc.GetOpenAIQuotaAutoPauseSettings(context.Background())
+	if cached.DefaultThreshold5h != 0.95 || cached.DefaultThreshold7d != 0.9 {
+		t.Fatalf("cached read = %+v, want {0.95, 0.9}", cached)
+	}
+}
+
+// Hot-path invariant: a Get with cold cache must return immediately (zero defaults)
+// rather than blocking on the DB. The async refresher will populate the cache for
+// subsequent calls.
+func TestGetOpenAIQuotaAutoPauseSettings_ColdCacheNonBlocking(t *testing.T) {
+	repo := newRuntimeSettingRepoStub()
+	repo.values[SettingKeyOpsAdvancedSettings] = `{"openai_account_quota_auto_pause":{"default_threshold_5h":0.7}}`
+	svc := NewSettingService(repo, &config.Config{})
+
+	start := time.Now()
+	settings := svc.GetOpenAIQuotaAutoPauseSettings(context.Background())
+	elapsed := time.Since(start)
+	if elapsed > 50*time.Millisecond {
+		t.Fatalf("cold-cache Get must be non-blocking, took %v", elapsed)
+	}
+	// Cold cache means we get zero defaults (the async refresh hasn't completed yet).
+	if settings.DefaultThreshold5h != 0 || settings.DefaultThreshold7d != 0 {
+		t.Fatalf("cold-cache Get = %+v, want zeroes", settings)
+	}
+}
+
+// Explicit cache write (e.g. from UpdateOpsAdvancedSettings) must be visible on the
+// very next read without any DB roundtrip.
+func TestSetOpenAIQuotaAutoPauseSettings_VisibleImmediately(t *testing.T) {
+	svc := NewSettingService(newRuntimeSettingRepoStub(), &config.Config{})
+
+	svc.SetOpenAIQuotaAutoPauseSettings(OpsOpenAIAccountQuotaAutoPauseSettings{
+		DefaultThreshold5h: 0.88,
+		DefaultThreshold7d: 0.77,
+	})
+
+	got := svc.GetOpenAIQuotaAutoPauseSettings(context.Background())
+	if got.DefaultThreshold5h != 0.88 || got.DefaultThreshold7d != 0.77 {
+		t.Fatalf("after Set, Get = %+v, want {0.88, 0.77}", got)
+	}
+}
diff --git a/backend/internal/service/ops_settings_models.go b/backend/internal/service/ops_settings_models.go
index fa18b05f..4d459e2b 100644
--- a/backend/internal/service/ops_settings_models.go
+++ b/backend/internal/service/ops_settings_models.go
@@ -92,17 +92,23 @@ type OpsAlertRuntimeSettings struct {
 
 // OpsAdvancedSettings stores advanced ops configuration (data retention, aggregation).
 type OpsAdvancedSettings struct {
-	DataRetention                   OpsDataRetentionSettings `json:"data_retention"`
-	Aggregation                     OpsAggregationSettings   `json:"aggregation"`
-	IgnoreCountTokensErrors         bool                     `json:"ignore_count_tokens_errors"`
-	IgnoreContextCanceled           bool                     `json:"ignore_context_canceled"`
-	IgnoreNoAvailableAccounts       bool                     `json:"ignore_no_available_accounts"`
-	IgnoreInvalidApiKeyErrors       bool                     `json:"ignore_invalid_api_key_errors"`
-	IgnoreInsufficientBalanceErrors bool                     `json:"ignore_insufficient_balance_errors"`
-	DisplayOpenAITokenStats         bool                     `json:"display_openai_token_stats"`
-	DisplayAlertEvents              bool                     `json:"display_alert_events"`
-	AutoRefreshEnabled              bool                     `json:"auto_refresh_enabled"`
-	AutoRefreshIntervalSec          int                      `json:"auto_refresh_interval_seconds"`
+	DataRetention                   OpsDataRetentionSettings               `json:"data_retention"`
+	Aggregation                     OpsAggregationSettings                 `json:"aggregation"`
+	OpenAIAccountQuotaAutoPause     OpsOpenAIAccountQuotaAutoPauseSettings `json:"openai_account_quota_auto_pause"`
+	IgnoreCountTokensErrors         bool                                   `json:"ignore_count_tokens_errors"`
+	IgnoreContextCanceled           bool                                   `json:"ignore_context_canceled"`
+	IgnoreNoAvailableAccounts       bool                                   `json:"ignore_no_available_accounts"`
+	IgnoreInvalidApiKeyErrors       bool                                   `json:"ignore_invalid_api_key_errors"`
+	IgnoreInsufficientBalanceErrors bool                                   `json:"ignore_insufficient_balance_errors"`
+	DisplayOpenAITokenStats         bool                                   `json:"display_openai_token_stats"`
+	DisplayAlertEvents              bool                                   `json:"display_alert_events"`
+	AutoRefreshEnabled              bool                                   `json:"auto_refresh_enabled"`
+	AutoRefreshIntervalSec          int                                    `json:"auto_refresh_interval_seconds"`
+}
+
+type OpsOpenAIAccountQuotaAutoPauseSettings struct {
+	DefaultThreshold5h float64 `json:"default_threshold_5h"`
+	DefaultThreshold7d float64 `json:"default_threshold_7d"`
 }
 
 type OpsDataRetentionSettings struct {
diff --git a/backend/internal/service/setting_service.go b/backend/internal/service/setting_service.go
index 08c0d045..98acdb80 100644
--- a/backend/internal/service/setting_service.go
+++ b/backend/internal/service/setting_service.go
@@ -137,6 +137,11 @@ type cachedOpenAICodexUserAgent struct {
 	expiresAt int64 // unix nano
 }
 
+type cachedOpenAIQuotaAutoPauseSettings struct {
+	settings  OpsOpenAIAccountQuotaAutoPauseSettings
+	expiresAt int64
+}
+
 const openAICodexUserAgentCacheTTL = 60 * time.Second
 const openAICodexUserAgentErrorTTL = 5 * time.Second
 const openAICodexUserAgentDBTimeout = 5 * time.Second
@@ -152,6 +157,12 @@ const openAIAllowCodexPluginCacheTTL = 60 * time.Second
 const openAIAllowCodexPluginErrorTTL = 5 * time.Second
 const openAIAllowCodexPluginDBTimeout = 5 * time.Second
 
+const openAIQuotaAutoPauseSettingsCacheTTL = 60 * time.Second
+const openAIQuotaAutoPauseSettingsErrorTTL = 5 * time.Second
+const openAIQuotaAutoPauseSettingsDBTimeout = 5 * time.Second
+
+const openAIQuotaAutoPauseSettingsRefreshKey = "openai_quota_auto_pause_settings"
+
 // DefaultSubscriptionGroupReader validates group references used by default subscriptions.
 type DefaultSubscriptionGroupReader interface {
 	GetByID(ctx context.Context, id int64) (*Group, error)
@@ -176,6 +187,15 @@ type SettingService struct {
 	openAICodexUASF             singleflight.Group
 	openAIAllowCodexPluginCache atomic.Value // *cachedOpenAIAllowCodexPlugin
 	openAIAllowCodexPluginSF    singleflight.Group
+
+	// openAIQuotaAutoPauseSettingsCache holds the most recently observed quota auto-pause
+	// settings. GetOpenAIQuotaAutoPauseSettings reads this atomic.Value on the request hot
+	// path without ever blocking on the DB; when the cached entry expires, a background
+	// goroutine refreshes it via openAIQuotaAutoPauseSettingsSF (stale-while-revalidate).
+	// This per-service field also gives tests natural isolation — each SettingService
+	// instance owns its own cache, no shared package-level state.
+	openAIQuotaAutoPauseSettingsCache atomic.Value // *cachedOpenAIQuotaAutoPauseSettings
+	openAIQuotaAutoPauseSettingsSF    singleflight.Group
 }
 
 // DefaultPlatformQuotaSetting 单 platform 三档限额（nil = 沿用上层；0 = 显式禁用；>0 = 上限）
@@ -2027,6 +2047,17 @@ func (s *SettingService) refreshCachedSettings(settings *SystemSettings) {
 		enabled:   settings.OpenAIAdvancedSchedulerEnabled,
 		expiresAt: time.Now().Add(openAIAdvancedSchedulerSettingCacheTTL).UnixNano(),
 	})
+	// Invalidate the quota auto-pause cache and let the next read trigger a fresh load.
+	// We can't know from here whether ops_advanced_settings was also touched, so be
+	// defensive: store an expired entry — GetOpenAIQuotaAutoPauseSettings will serve
+	// stale and kick off an async refresh, never blocking the request that follows.
+	s.openAIQuotaAutoPauseSettingsSF.Forget(openAIQuotaAutoPauseSettingsRefreshKey)
+	if cached, _ := s.openAIQuotaAutoPauseSettingsCache.Load().(*cachedOpenAIQuotaAutoPauseSettings); cached != nil {
+		s.openAIQuotaAutoPauseSettingsCache.Store(&cachedOpenAIQuotaAutoPauseSettings{
+			settings:  cached.settings,
+			expiresAt: 0,
+		})
+	}
 	if s.cfg != nil {
 		s.cfg.SetTrustForwardedIPForAPIKeyACL(settings.APIKeyACLTrustForwardedIP)
 	}
@@ -4448,6 +4479,106 @@ func (s *SettingService) GetClaudeCodeVersionBounds(ctx context.Context) (min, m
 	return b.min, b.max
 }
 
+// GetOpenAIQuotaAutoPauseSettings returns the current global default quota auto-pause
+// settings. It is invoked on the OpenAI scheduling hot path (once per request) and is
+// therefore designed to never block on the DB:
+//
+//   - Fresh cached value → returned immediately.
+//   - Stale or empty cache → the last known value is returned, and a background
+//     goroutine refreshes the cache via singleflight (stale-while-revalidate).
+//   - First call with no cache yet → zero defaults are returned and the same async
+//     refresh is kicked off; the next call gets the freshly populated value.
+//
+// Callers that need the freshly persisted value synchronously (tests, post-update
+// confirmation, optional startup warm-up) should call WarmOpenAIQuotaAutoPauseSettings.
+func (s *SettingService) GetOpenAIQuotaAutoPauseSettings(ctx context.Context) OpsOpenAIAccountQuotaAutoPauseSettings {
+	if s == nil {
+		return OpsOpenAIAccountQuotaAutoPauseSettings{}
+	}
+	cached, _ := s.openAIQuotaAutoPauseSettingsCache.Load().(*cachedOpenAIQuotaAutoPauseSettings)
+	now := time.Now().UnixNano()
+	if cached != nil && now < cached.expiresAt {
+		return cached.settings
+	}
+	// Stale or unset: trigger background refresh without blocking this request.
+	// singleflight.DoChan dedupes concurrent refreshes; we deliberately ignore the
+	// returned channel — the result is observable via the atomic cache.
+	s.openAIQuotaAutoPauseSettingsSF.DoChan(openAIQuotaAutoPauseSettingsRefreshKey, func() (any, error) {
+		s.refreshOpenAIQuotaAutoPauseSettings(context.Background())
+		return nil, nil
+	})
+	if cached != nil {
+		return cached.settings // serve stale value while revalidating
+	}
+	return OpsOpenAIAccountQuotaAutoPauseSettings{}
+}
+
+// WarmOpenAIQuotaAutoPauseSettings synchronously loads the quota auto-pause settings
+// into the in-memory cache. Useful for application startup (so the first request hits
+// a warm cache) and for tests that need deterministic reads immediately after
+// constructing the service.
+func (s *SettingService) WarmOpenAIQuotaAutoPauseSettings(ctx context.Context) OpsOpenAIAccountQuotaAutoPauseSettings {
+	if s == nil {
+		return OpsOpenAIAccountQuotaAutoPauseSettings{}
+	}
+	s.refreshOpenAIQuotaAutoPauseSettings(ctx)
+	cached, _ := s.openAIQuotaAutoPauseSettingsCache.Load().(*cachedOpenAIQuotaAutoPauseSettings)
+	if cached == nil {
+		return OpsOpenAIAccountQuotaAutoPauseSettings{}
+	}
+	return cached.settings
+}
+
+// refreshOpenAIQuotaAutoPauseSettings reads the latest settings from the DB and stores
+// them into the in-memory cache. On error it stores the prior value (or zero defaults
+// if nothing is cached yet) with the shorter error TTL so the next refresh comes
+// sooner. Always uses its own timeout-bounded context to keep refresh latency
+// predictable regardless of the caller.
+func (s *SettingService) refreshOpenAIQuotaAutoPauseSettings(ctx context.Context) {
+	if s == nil || s.settingRepo == nil {
+		return
+	}
+	dbCtx, cancel := context.WithTimeout(context.WithoutCancel(ctx), openAIQuotaAutoPauseSettingsDBTimeout)
+	defer cancel()
+
+	settings := OpsOpenAIAccountQuotaAutoPauseSettings{}
+	ttl := openAIQuotaAutoPauseSettingsCacheTTL
+	raw, err := s.settingRepo.GetValue(dbCtx, SettingKeyOpsAdvancedSettings)
+	if err == nil {
+		cfg := defaultOpsAdvancedSettings()
+		if strings.TrimSpace(raw) != "" {
+			if jsonErr := json.Unmarshal([]byte(raw), cfg); jsonErr == nil {
+				normalizeOpsAdvancedSettings(cfg)
+			}
+		}
+		settings = cfg.OpenAIAccountQuotaAutoPause
+	} else if !errors.Is(err, ErrSettingNotFound) {
+		// Real error: keep serving prior value but refresh sooner.
+		if prior, _ := s.openAIQuotaAutoPauseSettingsCache.Load().(*cachedOpenAIQuotaAutoPauseSettings); prior != nil {
+			settings = prior.settings
+		}
+		ttl = openAIQuotaAutoPauseSettingsErrorTTL
+	}
+
+	s.openAIQuotaAutoPauseSettingsCache.Store(&cachedOpenAIQuotaAutoPauseSettings{
+		settings:  settings,
+		expiresAt: time.Now().Add(ttl).UnixNano(),
+	})
+}
+
+// SetOpenAIQuotaAutoPauseSettings writes the given settings directly into the in-memory
+// cache. Called from settings-write code paths so that the next read reflects the new
+// value immediately, without waiting for the background refresh.
+func (s *SettingService) SetOpenAIQuotaAutoPauseSettings(settings OpsOpenAIAccountQuotaAutoPauseSettings) {
+	if s == nil {
+		return
+	}
+	s.openAIQuotaAutoPauseSettingsCache.Store(&cachedOpenAIQuotaAutoPauseSettings{
+		settings:  settings,
+		expiresAt: time.Now().Add(openAIQuotaAutoPauseSettingsCacheTTL).UnixNano(),
+	})
+}
+
 // GetRectifierSettings 获取请求整流器配置
 func (s *SettingService) GetRectifierSettings(ctx context.Context) (*RectifierSettings, error) {
 	value, err := s.settingRepo.GetValue(ctx, SettingKeyRectifierSettings)
diff --git a/backend/internal/service/wire.go b/backend/internal/service/wire.go
index b22e10ae..d3e4ce51 100644
--- a/backend/internal/service/wire.go
+++ b/backend/internal/service/wire.go
@@ -396,6 +396,46 @@ func ProvideBackupService(
 	return svc
 }
 
+// ProvideOpsService constructs OpsService and wires the SettingService-backed quota
+// auto-pause cache sink. Mirrors the SetCleanupReloader pattern: OpsService doesn't
+// hold a *SettingService reference, but wire injects a tiny callback so writes to
+// ops_advanced_settings immediately propagate into the scheduler hot-path cache.
+func ProvideOpsService(
+	opsRepo OpsRepository,
+	settingRepo SettingRepository,
+	cfg *config.Config,
+	accountRepo AccountRepository,
+	userRepo UserRepository,
+	concurrencyService *ConcurrencyService,
+	gatewayService *GatewayService,
+	openAIGatewayService *OpenAIGatewayService,
+	geminiCompatService *GeminiMessagesCompatService,
+	antigravityGatewayService *AntigravityGatewayService,
+	systemLogSink *OpsSystemLogSink,
+	settingService *SettingService,
+) *OpsService {
+	svc := NewOpsService(
+		opsRepo,
+		settingRepo,
+		cfg,
+		accountRepo,
+		userRepo,
+		concurrencyService,
+		gatewayService,
+		openAIGatewayService,
+		geminiCompatService,
+		antigravityGatewayService,
+		systemLogSink,
+	)
+	if settingService != nil {
+		svc.SetOpenAIQuotaAutoPauseSettingsSink(settingService.SetOpenAIQuotaAutoPauseSettings)
+		// Optional warm-up so the first scheduled request after process start observes
+		// a populated cache rather than zero defaults. Best-effort, sync-bounded.
+		settingService.WarmOpenAIQuotaAutoPauseSettings(context.Background())
+	}
+	return svc
+}
+
 // ProvideSettingService wires SettingService with group reader and proxy repo.
 func ProvideSettingService(settingRepo SettingRepository, groupRepo GroupRepository, proxyRepo ProxyRepository, cfg *config.Config) *SettingService {
 	svc := NewSettingService(settingRepo, cfg)
@@ -481,7 +521,7 @@ var ProviderSet = wire.NewSet(
 	NewDataManagementService,
 	ProvideBackupService,
 	ProvideOpsSystemLogSink,
-	NewOpsService,
+	ProvideOpsService,
 	ProvideOpsMetricsCollector,
 	ProvideOpsAggregationService,
 	ProvideOpsAlertEvaluatorService,
diff --git a/frontend/src/api/admin/ops.ts b/frontend/src/api/admin/ops.ts
index 69235668..847fc8c9 100644
--- a/frontend/src/api/admin/ops.ts
+++ b/frontend/src/api/admin/ops.ts
@@ -778,9 +778,15 @@ export interface OpsAlertRuntimeSettings {
   thresholds: OpsMetricThresholds // 指标阈值配置
 }
 
+export interface OpsOpenAIAccountQuotaAutoPauseSettings {
+  default_threshold_5h: number // 0~1，0 表示不启用全局默认 5h 阈值
+  default_threshold_7d: number // 0~1，0 表示不启用全局默认 7d 阈值
+}
+
 export interface OpsAdvancedSettings {
   data_retention: OpsDataRetentionSettings
   aggregation: OpsAggregationSettings
+  openai_account_quota_auto_pause: OpsOpenAIAccountQuotaAutoPauseSettings
   ignore_count_tokens_errors: boolean
   ignore_context_canceled: boolean
   ignore_no_available_accounts: boolean
diff --git a/frontend/src/components/account/EditAccountModal.vue b/frontend/src/components/account/EditAccountModal.vue
index 515ba58f..8dc85d0e 100644
--- a/frontend/src/components/account/EditAccountModal.vue
+++ b/frontend/src/components/account/EditAccountModal.vue
@@ -1787,6 +1787,84 @@
         </div>
       </div>
 
+      <div
+        v-if="account?.platform === 'openai'"
+        class="border-t border-gray-200 pt-4 dark:border-dark-600 space-y-4"
+      >
+        <div class="space-y-2">
+          <div class="flex items-center justify-between">
+            <label class="input-label mb-0">{{ t('admin.accounts.autoPause5hDisabled') }}</label>
+            <button
+              type="button"
+              @click="autoPause5hDisabled = !autoPause5hDisabled"
+              :class="[
+                'relative inline-flex h-6 w-11 flex-shrink-0 cursor-pointer rounded-full border-2 border-transparent transition-colors duration-200 ease-in-out focus:outline-none focus:ring-2 focus:ring-primary-500 focus:ring-offset-2',
+                autoPause5hDisabled ? 'bg-primary-600' : 'bg-gray-200 dark:bg-dark-600'
+              ]"
+              data-testid="auto-pause-5h-disabled"
+            >
+              <span
+                :class="[
+                  'pointer-events-none inline-block h-5 w-5 transform rounded-full bg-white shadow ring-0 transition duration-200 ease-in-out',
+                  autoPause5hDisabled ? 'translate-x-5' : 'translate-x-0'
+                ]"
+              />
+            </button>
+          </div>
+          <p class="input-hint">{{ t('admin.accounts.autoPauseDisabledHint') }}</p>
+        </div>
+        <div>
+          <label class="input-label">{{ t('admin.accounts.autoPause5hThreshold') }}</label>
+          <input
+            v-model.number="autoPause5hThreshold"
+            type="number"
+            min="0"
+            max="100"
+            step="0.1"
+            class="input"
+            :disabled="autoPause5hDisabled"
+            data-testid="auto-pause-5h-threshold"
+          />
+          <p class="input-hint">{{ t('admin.accounts.autoPauseThresholdHint') }}</p>
+        </div>
+        <div class="space-y-2">
+          <div class="flex items-center justify-between">
+            <label class="input-label mb-0">{{ t('admin.accounts.autoPause7dDisabled') }}</label>
+            <button
+              type="button"
+              @click="autoPause7dDisabled = !autoPause7dDisabled"
+              :class="[
+                'relative inline-flex h-6 w-11 flex-shrink-0 cursor-pointer rounded-full border-2 border-transparent transition-colors duration-200 ease-in-out focus:outline-none focus:ring-2 focus:ring-primary-500 focus:ring-offset-2',
+                autoPause7dDisabled ? 'bg-primary-600' : 'bg-gray-200 dark:bg-dark-600'
+              ]"
+              data-testid="auto-pause-7d-disabled"
+            >
+              <span
+                :class="[
+                  'pointer-events-none inline-block h-5 w-5 transform rounded-full bg-white shadow ring-0 transition duration-200 ease-in-out',
+                  autoPause7dDisabled ? 'translate-x-5' : 'translate-x-0'
+                ]"
+              />
+            </button>
+          </div>
+          <p class="input-hint">{{ t('admin.accounts.autoPauseDisabledHint') }}</p>
+        </div>
+        <div>
+          <label class="input-label">{{ t('admin.accounts.autoPause7dThreshold') }}</label>
+          <input
+            v-model.number="autoPause7dThreshold"
+            type="number"
+            min="0"
+            max="100"
+            step="0.1"
+            class="input"
+            :disabled="autoPause7dDisabled"
+            data-testid="auto-pause-7d-threshold"
+          />
+          <p class="input-hint">{{ t('admin.accounts.autoPauseThresholdHint') }}</p>
+        </div>
+      </div>
+
       <!-- 配额控制 (Anthropic OAuth/SetupToken: 亲和 + 窗口费用 + 会话 + RPM 等) -->
       <div
         v-if="account?.platform === 'anthropic' && (account?.type === 'oauth' || account?.type === 'setup-token')"
@@ -2447,6 +2525,10 @@ const selectedErrorCodes = ref<number[]>([])
 const customErrorCodeInput = ref<number | null>(null)
 const interceptWarmupRequests = ref(false)
 const autoPauseOnExpired = ref(false)
+const autoPause5hThreshold = ref<number | null>(null)
+const autoPause7dThreshold = ref<number | null>(null)
+const autoPause5hDisabled = ref(false)
+const autoPause7dDisabled = ref(false)
 const mixedScheduling = ref(false) // For antigravity accounts: enable mixed scheduling
 const allowOverages = ref(false) // For antigravity accounts: enable AI Credits overages
 const antigravityModelRestrictionMode = ref<'whitelist' | 'mapping'>('whitelist')
@@ -2862,9 +2944,13 @@ const syncFormFromAccount = (newAccount: Account | null) => {
   // Load mixed scheduling setting (only for antigravity accounts)
   mixedScheduling.value = false
   allowOverages.value = false
-  const extra = newAccount.extra as Record<string, unknown> | undefined
-  mixedScheduling.value = extra?.mixed_scheduling === true
-  allowOverages.value = extra?.allow_overages === true
+	const extra = newAccount.extra as Record<string, unknown> | undefined
+	mixedScheduling.value = extra?.mixed_scheduling === true
+	allowOverages.value = extra?.allow_overages === true
+	autoPause5hThreshold.value = typeof extra?.auto_pause_5h_threshold === 'number' ? extra.auto_pause_5h_threshold * 100 : null
+	autoPause7dThreshold.value = typeof extra?.auto_pause_7d_threshold === 'number' ? extra.auto_pause_7d_threshold * 100 : null
+	autoPause5hDisabled.value = extra?.auto_pause_5h_disabled === true
+	autoPause7dDisabled.value = extra?.auto_pause_7d_disabled === true
 
   // Load OpenAI passthrough toggle (OpenAI OAuth/API Key)
   openaiPassthroughEnabled.value = false
@@ -3987,9 +4073,9 @@ const handleSubmit = async () => {
     }
 
     // For OpenAI OAuth/API Key accounts, handle passthrough mode in extra
-    if (props.account.platform === 'openai' && (props.account.type === 'oauth' || props.account.type === 'apikey')) {
-      const currentExtra = (props.account.extra as Record<string, unknown>) || {}
-      const newExtra: Record<string, unknown> = { ...currentExtra }
+	if (props.account.platform === 'openai' && (props.account.type === 'oauth' || props.account.type === 'apikey')) {
+		const currentExtra = (props.account.extra as Record<string, unknown>) || {}
+		const newExtra: Record<string, unknown> = { ...currentExtra }
       const hadCodexCLIOnlyEnabled = currentExtra.codex_cli_only === true
       if (props.account.type === 'oauth') {
         newExtra.openai_oauth_responses_websockets_v2_mode = openaiOAuthResponsesWebSocketV2Mode.value
@@ -4011,15 +4097,35 @@ const handleSubmit = async () => {
       } else {
         newExtra.openai_compact_mode = openAICompactMode.value
       }
-      if (props.account.type === 'apikey') {
+		if (props.account.type === 'apikey') {
         if (!openAITextGenerationCapabilityEnabled.value || openAIResponsesMode.value === 'auto') {
           delete newExtra.openai_responses_mode
         } else {
           newExtra.openai_responses_mode = openAIResponsesMode.value
         }
-      }
+		}
+		if (autoPause5hThreshold.value != null && autoPause5hThreshold.value > 0) {
+			newExtra.auto_pause_5h_threshold = autoPause5hThreshold.value / 100
+		} else {
+			delete newExtra.auto_pause_5h_threshold
+		}
+		if (autoPause7dThreshold.value != null && autoPause7dThreshold.value > 0) {
+			newExtra.auto_pause_7d_threshold = autoPause7dThreshold.value / 100
+		} else {
+			delete newExtra.auto_pause_7d_threshold
+		}
+		if (autoPause5hDisabled.value) {
+			newExtra.auto_pause_5h_disabled = true
+		} else {
+			delete newExtra.auto_pause_5h_disabled
+		}
+		if (autoPause7dDisabled.value) {
+			newExtra.auto_pause_7d_disabled = true
+		} else {
+			delete newExtra.auto_pause_7d_disabled
+		}
 
-      delete newExtra.codex_image_generation_bridge_enabled
+		delete newExtra.codex_image_generation_bridge_enabled
       if (codexImageGenerationBridgeMode.value === 'inherit') {
         delete newExtra.codex_image_generation_bridge
       } else {
diff --git a/frontend/src/components/account/__tests__/EditAccountModal.spec.ts b/frontend/src/components/account/__tests__/EditAccountModal.spec.ts
index 4561924f..f4865de9 100644
--- a/frontend/src/components/account/__tests__/EditAccountModal.spec.ts
+++ b/frontend/src/components/account/__tests__/EditAccountModal.spec.ts
@@ -330,6 +330,49 @@ describe('EditAccountModal', () => {
     ])
   })
 
+	it('submits OpenAI quota auto-pause thresholds in extra', async () => {
+	  const account = buildAccount()
+	  account.extra = {
+		auto_pause_5h_threshold: 0.9,
+		auto_pause_7d_threshold: 0.8
+	  }
+	  updateAccountMock.mockReset()
+	  checkMixedChannelRiskMock.mockReset()
+	  checkMixedChannelRiskMock.mockResolvedValue({ has_risk: false })
+	  updateAccountMock.mockResolvedValue(account)
+
+	  const wrapper = mountModal(account)
+
+	  await wrapper.get('[data-testid="auto-pause-5h-threshold"]').setValue('95')
+	  await wrapper.get('[data-testid="auto-pause-7d-threshold"]').setValue('96')
+	  await wrapper.get('form#edit-account-form').trigger('submit.prevent')
+
+	  expect(updateAccountMock).toHaveBeenCalledTimes(1)
+	  expect(updateAccountMock.mock.calls[0]?.[1]?.extra?.auto_pause_5h_threshold).toBe(0.95)
+	  expect(updateAccountMock.mock.calls[0]?.[1]?.extra?.auto_pause_7d_threshold).toBe(0.96)
+	})
+
+	it('submits OpenAI quota auto-pause disable flag in extra', async () => {
+	  // Toggling the per-account disable flag must persist as auto_pause_5h_disabled
+	  // so an admin can exempt one account from auto-pause even when a global default
+	  // threshold is configured (otherwise leaving the threshold blank would silently
+	  // fall back to the global default).
+	  const account = buildAccount()
+	  updateAccountMock.mockReset()
+	  checkMixedChannelRiskMock.mockReset()
+	  checkMixedChannelRiskMock.mockResolvedValue({ has_risk: false })
+	  updateAccountMock.mockResolvedValue(account)
+
+	  const wrapper = mountModal(account)
+
+	  await wrapper.get('[data-testid="auto-pause-5h-disabled"]').trigger('click')
+	  await wrapper.get('form#edit-account-form').trigger('submit.prevent')
+
+	  expect(updateAccountMock).toHaveBeenCalledTimes(1)
+	  expect(updateAccountMock.mock.calls[0]?.[1]?.extra?.auto_pause_5h_disabled).toBe(true)
+	  expect(updateAccountMock.mock.calls[0]?.[1]?.extra?.auto_pause_7d_disabled).toBeUndefined()
+	})
+
   it('keeps at least one OpenAI APIKey endpoint capability selected', async () => {
     const account = buildAccount()
     updateAccountMock.mockReset()
diff --git a/frontend/src/i18n/locales/en.ts b/frontend/src/i18n/locales/en.ts
index b2aeb2f8..6735029c 100644
--- a/frontend/src/i18n/locales/en.ts
+++ b/frontend/src/i18n/locales/en.ts
@@ -3475,6 +3475,12 @@ export default {
         'When enabled, warmup requests like title generation will return mock responses without consuming upstream tokens',
       autoPauseOnExpired: 'Auto Pause On Expired',
       autoPauseOnExpiredDesc: 'When enabled, the account will auto pause scheduling after it expires',
+	  autoPause5hThreshold: '5h Usage Threshold (%)',
+	  autoPause7dThreshold: '7d Usage Threshold (%)',
+	  autoPauseThresholdHint: 'Leave empty or set 0 to use the global default threshold (configured in Ops settings); set a value to override the global default. Reaching the threshold only skips the account during scheduling and does not modify schedulable.',
+	  autoPause5hDisabled: 'Disable 5h auto-pause',
+	  autoPause7dDisabled: 'Disable 7d auto-pause',
+	  autoPauseDisabledHint: 'When enabled, this account is never auto-paused (even if a global default threshold is configured).',
       // Quota control (Anthropic OAuth/SetupToken only)
       quotaControl: {
         title: 'Quota Control',
@@ -5190,6 +5196,11 @@ export default {
         aggregation: 'Pre-aggregation Tasks',
         enableAggregation: 'Enable Pre-aggregation',
         aggregationHint: 'Pre-aggregation improves query performance for long time windows',
+        openaiQuotaAutoPause: 'OpenAI Account Quota Auto-pause',
+        openaiQuotaAutoPauseHint: 'When an OpenAI account reaches its 5h / 7d usage threshold, the scheduler skips it automatically and resumes once the window rolls over. Per-account thresholds take precedence over this global default.',
+        openaiQuotaAutoPauseDefault5h: 'Default 5h usage threshold (%)',
+        openaiQuotaAutoPauseDefault7d: 'Default 7d usage threshold (%)',
+        openaiQuotaAutoPauseThresholdHint: 'Value 0-100; leave blank or 0 to disable the global default threshold.',
         errorFiltering: 'Error Filtering',
         ignoreCountTokensErrors: 'Ignore count_tokens errors',
         ignoreCountTokensErrorsHint: 'When enabled, errors from count_tokens requests will not be written to the error log.',
@@ -5220,7 +5231,8 @@ export default {
           slaMinPercentRange: 'SLA minimum percentage must be between 0 and 100',
           ttftP99MaxRange: 'TTFT P99 maximum must be a number ≥ 0',
           requestErrorRateMaxRange: 'Request error rate maximum must be between 0 and 100',
-          upstreamErrorRateMaxRange: 'Upstream error rate maximum must be between 0 and 100'
+          upstreamErrorRateMaxRange: 'Upstream error rate maximum must be between 0 and 100',
+          openaiQuotaAutoPauseRange: 'OpenAI quota auto-pause threshold must be between 0 and 100'
         }
       },
       concurrency: {
diff --git a/frontend/src/i18n/locales/zh.ts b/frontend/src/i18n/locales/zh.ts
index 85d1feee..abb8dff7 100644
--- a/frontend/src/i18n/locales/zh.ts
+++ b/frontend/src/i18n/locales/zh.ts
@@ -3613,6 +3613,12 @@ export default {
       interceptWarmupRequestsDesc: '启用后，标题生成等预热请求将返回 mock 响应，不消耗上游 token',
       autoPauseOnExpired: '过期自动暂停调度',
       autoPauseOnExpiredDesc: '启用后，账号过期将自动暂停调度',
+	  autoPause5hThreshold: '5h 用量阈值(%)',
+	  autoPause7dThreshold: '7d 用量阈值(%)',
+	  autoPauseThresholdHint: '留空或填 0 表示使用全局默认阈值（在运维设置中配置）；填具体值则覆盖全局默认。达到阈值后仅在调度时跳过账号，不修改 schedulable。',
+	  autoPause5hDisabled: '禁用 5h 自动暂停',
+	  autoPause7dDisabled: '禁用 7d 自动暂停',
+	  autoPauseDisabledHint: '开启后该账号永不进入自动暂停（即使全局默认阈值已配置）。',
       // Quota control (Anthropic OAuth/SetupToken only)
       quotaControl: {
         title: '配额控制',
@@ -5349,6 +5355,11 @@ export default {
         aggregation: '预聚合任务',
         enableAggregation: '启用预聚合任务',
         aggregationHint: '预聚合可提升长时间窗口查询性能',
+        openaiQuotaAutoPause: 'OpenAI 账号配额自动暂停',
+        openaiQuotaAutoPauseHint: '当 OpenAI 账号 5h / 7d 用量达到阈值时，调度会自动跳过该账号；窗口滚动后自动恢复。账号级阈值优先于此全局默认值。',
+        openaiQuotaAutoPauseDefault5h: '默认 5h 用量阈值 (%)',
+        openaiQuotaAutoPauseDefault7d: '默认 7d 用量阈值 (%)',
+        openaiQuotaAutoPauseThresholdHint: '取值 0-100，留空或 0 表示不启用全局默认阈值。',
         errorFiltering: '错误过滤',
         ignoreCountTokensErrors: '忽略 count_tokens 错误',
         ignoreCountTokensErrorsHint: '启用后，count_tokens 请求的错误将不会写入错误日志。',
@@ -5380,7 +5391,8 @@ export default {
           slaMinPercentRange: 'SLA最低百分比必须在0-100之间',
           ttftP99MaxRange: 'TTFT P99最大值必须大于等于0',
           requestErrorRateMaxRange: '请求错误率最大值必须在0-100之间',
-          upstreamErrorRateMaxRange: '上游错误率最大值必须在0-100之间'
+          upstreamErrorRateMaxRange: '上游错误率最大值必须在0-100之间',
+          openaiQuotaAutoPauseRange: 'OpenAI 配额自动暂停阈值必须在 0-100 之间'
         }
       },
       concurrency: {
diff --git a/frontend/src/views/admin/ops/components/OpsSettingsDialog.vue b/frontend/src/views/admin/ops/components/OpsSettingsDialog.vue
index 5dba5b1d..bfb7a65f 100644
--- a/frontend/src/views/admin/ops/components/OpsSettingsDialog.vue
+++ b/frontend/src/views/admin/ops/components/OpsSettingsDialog.vue
@@ -50,6 +50,10 @@ async function loadAllSettings() {
     runtimeSettings.value = runtime
     emailConfig.value = email
     advancedSettings.value = advanced
+    // 兼容旧 payload：后端未返回该字段时补默认值，保证表单可绑定
+    if (advancedSettings.value && !advancedSettings.value.openai_account_quota_auto_pause) {
+      advancedSettings.value.openai_account_quota_auto_pause = { default_threshold_5h: 0, default_threshold_7d: 0 }
+    }
     // 如果后端返回了阈值，使用后端的值；否则保持默认值
     if (thresholds && Object.keys(thresholds).length > 0) {
         metricThresholds.value = {
@@ -119,6 +123,28 @@ function removeRecipient(target: 'alert' | 'report', email: string) {
   if (idx >= 0) list.splice(idx, 1)
 }
 
+// OpenAI 账号配额自动暂停：后端按 0~1 分数存储，UI 按百分比(0~100)展示
+const quotaAutoPause5hPercent = computed<number | null>({
+  get() {
+    const v = advancedSettings.value?.openai_account_quota_auto_pause?.default_threshold_5h
+    return v && v > 0 ? Math.round(v * 1000) / 10 : null
+  },
+  set(val) {
+    if (!advancedSettings.value?.openai_account_quota_auto_pause) return
+    advancedSettings.value.openai_account_quota_auto_pause.default_threshold_5h = val != null && val > 0 ? val / 100 : 0
+  }
+})
+const quotaAutoPause7dPercent = computed<number | null>({
+  get() {
+    const v = advancedSettings.value?.openai_account_quota_auto_pause?.default_threshold_7d
+    return v && v > 0 ? Math.round(v * 1000) / 10 : null
+  },
+  set(val) {
+    if (!advancedSettings.value?.openai_account_quota_auto_pause) return
+    advancedSettings.value.openai_account_quota_auto_pause.default_threshold_7d = val != null && val > 0 ? val / 100 : 0
+  }
+})
+
 // 验证
 const validation = computed(() => {
   const errors: string[] = []
@@ -145,6 +171,11 @@ const validation = computed(() => {
     if (hourly_metrics_retention_days < 0 || hourly_metrics_retention_days > 365) {
       errors.push(t('admin.ops.settings.validation.retentionDaysRange'))
     }
+
+    const { default_threshold_5h, default_threshold_7d } = advancedSettings.value.openai_account_quota_auto_pause
+    if (default_threshold_5h < 0 || default_threshold_5h > 1 || default_threshold_7d < 0 || default_threshold_7d > 1) {
+      errors.push(t('admin.ops.settings.validation.openaiQuotaAutoPauseRange'))
+    }
   }
 
   // 验证指标阈值
@@ -473,6 +504,40 @@ async function saveAllSettings() {
             </div>
           </div>
 
+          <!-- OpenAI 账号配额自动暂停（全局默认阈值） -->
+          <div class="space-y-3">
+            <h5 class="text-xs font-semibold text-gray-700 dark:text-gray-300">{{ t('admin.ops.settings.openaiQuotaAutoPause') }}</h5>
+            <p class="text-xs text-gray-500">{{ t('admin.ops.settings.openaiQuotaAutoPauseHint') }}</p>
+
+            <div class="grid grid-cols-1 gap-4 md:grid-cols-2">
+              <div>
+                <label class="input-label">{{ t('admin.ops.settings.openaiQuotaAutoPauseDefault5h') }}</label>
+                <input
+                  v-model.number="quotaAutoPause5hPercent"
+                  type="number"
+                  min="0"
+                  max="100"
+                  step="0.1"
+                  class="input"
+                  data-testid="ops-quota-auto-pause-5h"
+                />
+              </div>
+              <div>
+                <label class="input-label">{{ t('admin.ops.settings.openaiQuotaAutoPauseDefault7d') }}</label>
+                <input
+                  v-model.number="quotaAutoPause7dPercent"
+                  type="number"
+                  min="0"
+                  max="100"
+                  step="0.1"
+                  class="input"
+                  data-testid="ops-quota-auto-pause-7d"
+                />
+              </div>
+            </div>
+            <p class="text-xs text-gray-500">{{ t('admin.ops.settings.openaiQuotaAutoPauseThresholdHint') }}</p>
+          </div>
+
           <!-- Error Filtering -->
           <div class="space-y-3">
             <h5 class="text-xs font-semibold text-gray-700 dark:text-gray-300">{{ t('admin.ops.settings.errorFiltering') }}</h5>