From ed1113ec43168947da16af5f9dec1b9275780a1c Mon Sep 17 00:00:00 2001
From: Tyson Cung <tyson.cung@gmail.com>
Date: Sat, 28 Feb 2026 00:13:54 +0000
Subject: [PATCH] Fix vision example to use Chat Completions API

The vision examples were using the Responses API format which was
causing 400 errors when users tried to run the code. Updated to use
the standard Chat Completions API which supports vision through the
image_url content type.

Changes:
- Updated examples to use client.chat.completions.create()
- Changed content types from input_text/input_image to text/image_url
- Updated model from gpt-5.2 to gpt-4o (vision-capable model)
- Changed image URL to a working example
- Added print statements to show output

Fixes #2776
---
 README.md | 30 +++++++++++++++++++-----------
 1 file changed, 19 insertions(+), 11 deletions(-)

diff --git a/README.md b/README.md
index 7e4f0ae657..bb769524ab 100644
--- a/README.md
+++ b/README.md
@@ -76,21 +76,27 @@ so that your API key is not stored in source control.
 With an image URL:
 
 ```python
+from openai import OpenAI
+
+client = OpenAI()
+
 prompt = "What is in this image?"
-img_url = "https://upload.wikimedia.org/wikipedia/commons/thumb/d/d5/2023_06_08_Raccoon1.jpg/1599px-2023_06_08_Raccoon1.jpg"
+img_url = "https://upload.wikimedia.org/wikipedia/commons/thumb/d/dd/Gfp-wisconsin-madison-the-nature-boardwalk.jpg/2560px-Gfp-wisconsin-madison-the-nature-boardwalk.jpg"
 
-response = client.responses.create(
-    model="gpt-5.2",
-    input=[
+completion = client.chat.completions.create(
+    model="gpt-4o",
+    messages=[
         {
             "role": "user",
             "content": [
-                {"type": "input_text", "text": prompt},
-                {"type": "input_image", "image_url": f"{img_url}"},
+                {"type": "text", "text": prompt},
+                {"type": "image_url", "image_url": {"url": img_url}},
             ],
         }
     ],
 )
+
+print(completion.choices[0].message.content)
 ```
 
 With the image as a base64 encoded string:
@@ -105,18 +111,20 @@ prompt = "What is in this image?"
 with open("path/to/image.png", "rb") as image_file:
     b64_image = base64.b64encode(image_file.read()).decode("utf-8")
 
-response = client.responses.create(
-    model="gpt-5.2",
-    input=[
+completion = client.chat.completions.create(
+    model="gpt-4o",
+    messages=[
         {
             "role": "user",
             "content": [
-                {"type": "input_text", "text": prompt},
-                {"type": "input_image", "image_url": f"data:image/png;base64,{b64_image}"},
+                {"type": "text", "text": prompt},
+                {"type": "image_url", "image_url": {"url": f"data:image/png;base64,{b64_image}"}},
             ],
         }
     ],
 )
+
+print(completion.choices[0].message.content)
 ```
 
 ## Async usage