Update app.py

app.py

@@ -36,7 +36,7 @@ If you don't need any action, set all fields to null or empty strings.
 
     try:
         response = client.chat.completions.create(
-            model="models/gemini-2.0-flash-lite",
+            model="mistral-small",
             messages=messages
         )
         bot_message = response.choices[0].message.content