AI agents and crawlers

One page per user agent, generated from the agenttraffic registry (2026.08.27). Each page has the verbatim UA strings, whether the operator publishes IP ranges, the robots.txt token, and what a hit means.

By kind: Live fetch, AI search, Training. By operator: OpenAI.

• ChatGPT-UserOpenAI · Live fetch · IP ranges publishedChatGPT-User is the user agent OpenAI sends when a person asks ChatGPT about a specific page and ChatGPT fetches it on the spot.
• OAI-SearchBotOpenAI · AI search · IP ranges publishedOAI-SearchBot is the crawler that builds the search index behind ChatGPT search.
• GPTBotOpenAI · Training · IP ranges publishedGPTBot is OpenAI's training crawler.