Update app.py

app.py

@@ -55,7 +55,7 @@ def predict(question_choice, feedback_level, audio):
     ]
 
     response = openai.ChatCompletion.create(
-        model='gpt-4',
+        model='gpt-3.5-turbo',
         messages=conversation,
         temperature=0.6,
         max_tokens=550,  # Limiting the response to 550 tokens