Update app.py

app.py

@@ -102,7 +102,7 @@ def get_chat_response(query: str, knowledge_base: dict) -> str:
         
         # Generate response
         response = client.ChatCompletion.create(
-            model="gpt-3.5-turbo",  # You can change to gpt-4 if preferred
+            model="gpt-4o-mini",  
             messages=[
                 {"role": "system", "content": prompt},
                 {"role": "user", "content": query}