Update app.py

app.py

@@ -87,7 +87,7 @@ def main():
         messages = [{"role": "system", "content": task_description}, {"role": "user", "content": user_prompt}]
         
         response = openai.ChatCompletion.create(
-            model="gpt-3.5-turbo-16k",
+            model="gpt-4",
             messages=messages,
             temperature=0,
             max_tokens=2500,