Update app.py

app.py

@@ -34,7 +34,7 @@ Rules:
 llm = ChatOpenAI(
     api_key=os.environ.get("OPENROUTER_API_KEY"),
     base_url="https://openrouter.ai/api/v1", # <-- Point to OpenRouter instead of OpenAI
-    model="google/gemma-4-26b-a4b-it:free",        # <-- Swap this with ANY model ID from OpenRouter
+    model="z-ai/glm-4.5-air:free",        # <-- Swap this with ANY model ID from OpenRouter
     temperature=0.5,
     default_headers={
         "HTTP-Referer": "http://localhost:7860", # Optional: Used by OpenRouter for app rankings