Update app.py

app.py

@@ -247,7 +247,7 @@ def get_llm(llm_provider):
         )
     else:  # "Mistral (OpenRouter)"
         return ChatOpenAI(
-            model="mistralai/mistral-small-3.1-24b-instruct:free",  # Or another Mistral model if desired
+            model="mistralai/ministral-8b",  # Or another Mistral model if desired
             openai_api_key=OPENROUTER_API_KEY,
             openai_api_base="https://openrouter.ai/api/v1",
             temperature=0,