OpenAI: 6 rows
In short
OpenAI has 6 rows in the Index: GPTBot, OAI-SearchBot, ChatGPT-User, OAI-AdsBot, ChatGPT agent and ChatGPT Atlas. They cover 5 purposes: training, search index, live answer fetch, other, task agent. 4 of them have a robots.txt token and 1 publish nothing a site can verify. The most refused is GPTBot, disallowed at the root by 18.5 percent of top-10,000 sites.
| Operator | Token | Block rate |
|---|---|---|
| OpenAI | GPTBot | 18.5% |
| OpenAI | OAI-SearchBot | 7.7% |
| OpenAI | ChatGPT-User | 9.7% |
| OpenAI | OAI-AdsBot | |
| OpenAI | ChatGPT agent (Cloud browser, formerly Operator) | |
| OpenAI | ChatGPT Atlas (browser agent mode) |
Vendor profile: OpenAI, with its products, standards, our probes and what it does not do.
Verification Ledger entry
- Summary
- One IP JSON per crawler plus a Web Bot Auth key directory for the Cloud browser. The most complete set read.
- IP lists
- Reverse DNS
- publishes nothing
- Key directory
- https://chatgpt.com/.well-known/http-message-signatures-directory
- Cloudflare
- GPTBot and ChatGPT agent listed Verified on Radar (read 2026-11-04); ChatGPT agent is a Cloudflare signed agent, detection ID 129220581
- Visa and Mastercard
- Visa TAP: no public operator-level registration found (checked 2026-11-04). Mastercard Agent Pay: no public operator-level registration found (checked 2026-11-04).
Block rates for OpenAI tokens
| Token | Refused, top 10,000 | Named | Via * | All crawled |
|---|---|---|---|---|
| GPTBot | 18.5% | 15.2% | 3.3% | 13.9% |
| ChatGPT-User | 9.7% | 6.3% | 3.3% | 6.9% |
| OAI-SearchBot | 7.7% | 4.4% | 3.3% | 5.4% |
Based on 5,938 top-10,000 sites with a parsed robots.txt; crawl of 2026-11-04.
In the news
- 2026-10-27OpenAI updates the ChatGPT-User IP list
Sources
Last reviewed 2026-11-04