From c354b5fcf2924eab7b5a77b90d351d2355ae8fa0 Mon Sep 17 00:00:00 2001
From: Bilal Godil <bg2002@gmail.com>
Date: Mon, 29 Jun 2026 15:08:34 -0700
Subject: [PATCH] fix(backend): use paid z-ai/glm-4.5-air slug instead of
 retired :free variant

OpenRouter discontinued the free tier for z-ai/glm-4.5-air, causing
AI_APICallError ("This model is unavailable for free") on the
dumb/slow/authenticated model path. Switch to the paid slug it
recommends.
---
 apps/backend/src/lib/ai/models.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

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: {