Update gpt4v.py

gpt4v.py

@@ -25,7 +25,7 @@ class GPT4Vision:
         base64_image = self.encode_image(image_file)
 
         response = self.client.chat.completions.create(
-            model="gpt-4-vision-preview",
+            model="gpt-4o",
             messages=[
                 {
                     "role": "user",