Update app.py

app.py

@@ -6,7 +6,7 @@ client = OpenAI(api_key=os.environ["Secret"])
 
 def gpt3(texts):
     response = client.chat.completions.create(
-        model="gpt-3.5-turbo-instruct",
+        model="gpt-4",
         messages=[{"role": "user", "content": texts}],
         temperature=0,
         max_tokens=750,