diff --git a/src/domain/models/models-dev.ts b/src/domain/models/models-dev.ts
index 05de143..0032570 100644
--- a/src/domain/models/models-dev.ts
+++ b/src/domain/models/models-dev.ts
@@ -42,7 +42,7 @@ const CODEX_DYNAMIC_GPT_VERSION_THRESHOLD = 5.4;
 
 // ChatGPT Codex limits are smaller than the public API limits. Match OpenCode
 // OAuth metadata so clients compact before the backend runs out of output room:
-// https://github.com/anomalyco/opencode/blob/4a57013cf8cb163f58638273fd9da8538cd33cb7/packages/opencode/src/plugin/openai/codex.ts#L293-L312
+// https://github.com/anomalyco/opencode/blob/400a6f2afab628103f8a41df9b1037d240e79fed/packages/opencode/src/plugin/openai/codex.ts#L299-L309
 const CODEX_MODEL_LIMIT_OVERRIDES: Record<string, JsonObject> = {
   "gpt-5.5": {
     context: 400_000,
@@ -50,18 +50,18 @@ const CODEX_MODEL_LIMIT_OVERRIDES: Record<string, JsonObject> = {
     output: 128_000,
   },
   "gpt-5.6-luna": {
-    context: 500_000,
-    input: 372_000,
+    context: 400_000,
+    input: 272_000,
     output: 128_000,
   },
   "gpt-5.6-sol": {
-    context: 500_000,
-    input: 372_000,
+    context: 400_000,
+    input: 272_000,
     output: 128_000,
   },
   "gpt-5.6-terra": {
-    context: 500_000,
-    input: 372_000,
+    context: 400_000,
+    input: 272_000,
     output: 128_000,
   },
 };
diff --git a/tests/domain/models-dev-contract.test.ts b/tests/domain/models-dev-contract.test.ts
index e82aa89..91bcd81 100644
--- a/tests/domain/models-dev-contract.test.ts
+++ b/tests/domain/models-dev-contract.test.ts
@@ -219,8 +219,8 @@ describe("models registry contract", () => {
       models?: Record<string, { limit?: unknown }>;
     };
     expect(kleis.models?.["gpt-5.6-luna"]?.limit).toEqual({
-      context: 500_000,
-      input: 372_000,
+      context: 400_000,
+      input: 272_000,
       output: 128_000,
     });
   });