OpenAI
ChatGPT-User
About this crawler
Visits a page when a ChatGPT or custom GPT user’s request needs it.
Usually means: A person asked ChatGPT something that needed this page. Because a user triggered it, robots.txt rules may not apply.
OpenAI says ChatGPT-User is not used to crawl the web automatically.
User agent
ChatGPT-UserWe match these as user-agent tokens, not full browser strings. Providers may add surrounding version or product text.
IP verification
Verified when user agent and IP range both match
We first match the crawler’s user-agent token, then compare the request IP with the ranges published by the crawler’s operator.
User agent
The request’s user agent contains ChatGPT-User.
Request IP
Server-side tracking forwards the IP address your server saw.
Range check
The IP is compared with the operator’s published address ranges.
Sample IP ranges
- 104.208.184.192/28
- 104.210.139.192/28
- 104.210.139.224/28
- 128.85.198.32/28
- 13.65.138.112/28
- 13.67.72.16/28
- 13.71.2.208/28
- 13.76.116.80/28
- 13.76.32.208/28
- 13.83.167.128/28
Showing up to 10 of 234 ranges, published 20 October 2026. The live list is fetched from the operator.
Range endpoint
https://openai.com/chatgpt-user.jsonDiscover when bots and AI assistants crawl your website.
Add a small server-side snippet to see which AI assistants, search engines and training crawlers request your pages, including pages that return 404.
- ChatGPT, Claude, Perplexity and Gemini traffic in one view
- Verified against each provider’s published IP ranges
- No visitor cookies and no crawler IP addresses stored