Update app.py

app.py

@@ -33,9 +33,9 @@ MODELS = {
         },
     },
     "Mistral Small": {
-        "api_url": "https://ezofisai.services.ai.azure.com/api/projects/firstProject",
-        "model": "mistral-small-2503",
-        "key_env": "AZUREMIST_API_KEY",
+        "api_url": "https://openrouter.ai/api/v1/chat/completions",
+        "model": "mistralai/mistral-small-3.1-24b-instruct:free",
+        "key_env": "OPENROUTER_API_KEY",
         "response_format": {"type": "json_object"},
         "extra_headers": {
             "HTTP-Referer": "https://huggingface.co",