ChatGPT Sponsored Recommendation Card ads are square 1:1 still images, measured at 1200×1200 px, delivered as JPG, PNG, or WEBP. They run in the In-conversation, beneath the assistant response placement on ChatGPT. Use these requirements to brief designers, validate uploads, and avoid creative rejections in ChatGPT's ad manager.
| Dimensions | 1200 × 1200 px |
|---|---|
| Aspect ratios | 1:1 |
| Orientation | square |
| File types | JPG, PNG, WEBP |
| Headline | 16 chars |
|---|---|
| Primary text | 32 chars |
Creative is a square (1:1) image asset, sized up to 1200×1200 px. Headline copy is 16–24 characters; description copy is 32–48 characters. Required fields: advertiser name, favicon/advertiser logo, title, description, landing page URL, and the image asset.
Official source: https://help.openai.com/en/articles/20001207-ads-in-chatgpt-the-basics