Update app.py

app.py

@@ -67,14 +67,14 @@ Query: {query}
 PDF pages:
 """.strip()
 
-            response = client.chat.completions.create(
-                model="gpt-4.1",
+            response = client.responses.create(
+                model="gpt-5",
                 messages=[
                     {
                         "role": "user",
                         "content": (
-                            [{"type": "text", "text": PROMPT.format(query=query)}] +
-                            [{"type": "image_url",
+                            [{"type": "input_text", "text": PROMPT.format(query=query)}] +
+                            [{"type": "input_image",
                               "image_url": f"data:image/jpeg;base64,{im}"}
                              for im in base64_images]
                         )