ChatGPT-User

ai-fetcher ChatGPT-User

ChatGPT user web crawler bot

About this crawler

ChatGPT-User is a web crawler identified by the regular-expression pattern ChatGPT-User in the User-Agent request header. It is categorised as ai-fetcher. Use the regex above to detect, log, allow, or block ChatGPT-User traffic in your web server, CDN edge rules, or robots.txt.

Block-rate · top 25k sites

5.7%
latest snapshot
2026-06-04
matched key: ChatGPT-User
2026-05-012026-06-047.5%

Technical details

Name
ChatGPT-User
Pattern
ChatGPT-User
Tags
ai-fetcher
Reference
https://openai.com/bot
Added
2024/04/19
rDNS suffixes
.openai.com
Instances
1 known sample(s)

rDNS verification (FCrDNS)

Verify a request is genuinely ChatGPT-User with forward-confirmed reverse DNS: the client IP's PTR record must end in one of the suffixes below and a forward A/AAAA lookup of that hostname must return the same IP. UA strings alone are spoofable; FCrDNS is not.

Sample User-Agent strings

Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko); compatible; ChatGPT-User/1.0; +https://openai.com/bot

Block this crawler

robots.txt — disallow ChatGPT-User:

User-agent: ChatGPT-User Disallow: /

Apache .htaccess — return 403:

RewriteEngine On RewriteCond %{HTTP_USER_AGENT} ChatGPT-User [NC] RewriteRule .* - [F,L]

Nginx — return 403 inside a server block:

if ($http_user_agent ~* "ChatGPT-User") { return 403; }
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