fix value

Author: PatrickFarley

articles/ai-services/openai/how-to/gpt-with-vision.md

@@ -358,7 +358,7 @@ By controlling the _detail_ parameter, which has two options, `low` or `high`, y
 ### Image support
 
 - **Limitation on image enhancements per chat session**: Enhancements cannot be applied to multiple images within a single chat call.
-- **Maximum input image size**: The maximum size for input images is restricted to 4 MB.
+- **Maximum input image size**: The maximum size for input images is restricted to 20 MB.
 - **Object grounding in enhancement API**: When the enhancement API is used for object grounding, and the model detects duplicates of an object, it will generate one bounding box and label for all the duplicates instead of separate ones for each.
 - **Low resolution accuracy**: When images are analyzed using the "low resolution" setting, it allows for faster responses and uses fewer input tokens for certain use cases. However, this could impact the accuracy of object and text recognition within the image.
 - **Image chat restriction**: When uploading images in the chat playground or the API, there is a limit of 10 images per chat call.