fix(openai): add codex auto review model pricing

backend/internal/service/openai_codex_transform.go

@@ -8,6 +8,7 @@ import (
 
 var codexModelMap = map[string]string{
 	"gpt-5.5":                    "gpt-5.5",
+	"codex-auto-review":          "codex-auto-review",
 	"gpt-5.4":                    "gpt-5.4",
 	"gpt-5.4-mini":               "gpt-5.4-mini",
 	"gpt-5.4-none":               "gpt-5.4",

backend/internal/service/openai_codex_transform_test.go

@@ -839,6 +839,7 @@ func TestNormalizeCodexModel_Gpt53(t *testing.T) {
 		"gpt-5.4":                   "gpt-5.4",
 		"gpt5.5":                    "gpt-5.5",
 		"openai/gpt5.5":             "gpt-5.5",
+		"codex-auto-review":         "codex-auto-review",
 		"gpt5.4":                    "gpt-5.4",
 		"gpt-5.4-high":              "gpt-5.4",
 		"gpt-5.4-chat-latest":       "gpt-5.4",

backend/internal/service/openai_model_mapping_test.go

@@ -261,6 +261,12 @@ func TestNormalizeOpenAIModelForUpstream(t *testing.T) {
 			model:   "gpt-5.4-high",
 			want:    "gpt-5.4",
 		},
+		{
+			name:    "oauth preserves codex auto review model",
+			account: &Account{Type: AccountTypeOAuth},
+			model:   "codex-auto-review",
+			want:    "codex-auto-review",
+		},
 		{
 			name:    "apikey preserves custom compatible model",
 			account: &Account{Type: AccountTypeAPIKey},
@@ -283,3 +289,17 @@ func TestNormalizeOpenAIModelForUpstream(t *testing.T) {
 		})
 	}
 }
+
+func TestUsageBillingModelCandidatesPreserveCodexAutoReviewModel(t *testing.T) {
+	candidates := usageBillingModelCandidates("codex-auto-review")
+
+	expected := []string{"codex-auto-review"}
+	if len(candidates) != len(expected) {
+		t.Fatalf("usageBillingModelCandidates(codex-auto-review) = %#v, want %#v", candidates, expected)
+	}
+	for i := range expected {
+		if candidates[i] != expected[i] {
+			t.Fatalf("usageBillingModelCandidates(codex-auto-review) = %#v, want %#v", candidates, expected)
+		}
+	}
+}

backend/internal/service/pricing_service_test.go

@@ -2,6 +2,8 @@ package service
 
 import (
 	"encoding/json"
+	"os"
+	"path/filepath"
 	"testing"
 
 	"github.com/stretchr/testify/require"
@@ -111,6 +113,22 @@ func TestGetModelPricing_OpenAICompactAliasUsesStaticFallback(t *testing.T) {
 	require.InDelta(t, 1.5e-5, got.OutputCostPerToken, 1e-12)
 }
 
+func TestDefaultPricingIncludesCodexAutoReview(t *testing.T) {
+	data, err := os.ReadFile(filepath.Join("..", "..", "resources", "model-pricing", "model_prices_and_context_window.json"))
+	require.NoError(t, err)
+
+	svc := &PricingService{}
+	pricingData, err := svc.parsePricingData(data)
+	require.NoError(t, err)
+	svc.pricingData = pricingData
+
+	got := svc.GetModelPricing("codex-auto-review")
+	require.NotNil(t, got)
+	require.InDelta(t, 2.5e-6, got.InputCostPerToken, 1e-12)
+	require.InDelta(t, 1.5e-5, got.OutputCostPerToken, 1e-12)
+	require.InDelta(t, 2.5e-7, got.CacheReadInputTokenCost, 1e-12)
+}
+
 func TestGetModelPricing_Gpt54MiniUsesDedicatedStaticFallbackWhenRemoteMissing(t *testing.T) {
 	svc := &PricingService{
 		pricingData: map[string]*LiteLLMModelPricing{

backend/resources/model-pricing/model_prices_and_context_window.json

@@ -5173,6 +5173,39 @@
     "supports_tool_choice": true,
     "supports_vision": true
   },
+  "codex-auto-review": {
+    "cache_read_input_token_cost": 2.5e-07,
+    "input_cost_per_token": 2.5e-06,
+    "litellm_provider": "openai",
+    "max_input_tokens": 1050000,
+    "max_output_tokens": 128000,
+    "max_tokens": 128000,
+    "mode": "chat",
+    "output_cost_per_token": 1.5e-05,
+    "supported_endpoints": [
+      "/v1/chat/completions",
+      "/v1/responses"
+    ],
+    "supported_modalities": [
+      "text",
+      "image"
+    ],
+    "supported_output_modalities": [
+      "text",
+      "image"
+    ],
+    "supports_function_calling": true,
+    "supports_native_streaming": true,
+    "supports_parallel_function_calling": true,
+    "supports_pdf_input": true,
+    "supports_prompt_caching": true,
+    "supports_reasoning": true,
+    "supports_response_schema": true,
+    "supports_service_tier": true,
+    "supports_system_messages": true,
+    "supports_tool_choice": true,
+    "supports_vision": true
+  },
   "gpt-5.4-mini": {
     "cache_read_input_token_cost": 7.5e-08,
     "input_cost_per_token": 7.5e-07,