diff --git a/apps/backend/src/lib/ai/models.ts b/apps/backend/src/lib/ai/models.ts
index 63acc17da..341f98269 100644
--- a/apps/backend/src/lib/ai/models.ts
+++ b/apps/backend/src/lib/ai/models.ts
@@ -19,7 +19,7 @@ const MODEL_SELECTION_MATRIX: Record<
 > = {
   dumb: {
     slow: {
-      authenticated: { modelId: "z-ai/glm-4.5-air:free" },
+      authenticated: { modelId: "z-ai/glm-4.5-air" },
       unauthenticated: { modelId: "nvidia/nemotron-3-super-120b-a12b" },
     },
     fast: {