Update app.py

app.py

@@ -100,7 +100,8 @@ class PDFChat:
         
         try:
             response = openai.ChatCompletion.create(
-                model="gpt-4-turbo",
+                # model="gpt-4-turbo",
+                model="gpt-4o" ,
                 messages=messages
             )
             response_text = response.choices[0].message['content']