What is ChatGPT-User?

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ChatGPT-User: OpenAI's user agent for visits a ChatGPT user sets off, such as opening a page to answer a question, rather than automatic crawling.

OpenAI says ChatGPT-User does not crawl the web on its own: it fetches a page when a person's request calls for it, and robots.txt rules may not apply to those visits. It is separate from OAI-SearchBot, which decides whether a site can appear in ChatGPT search at all, and from GPTBot, which collects training data.

A ChatGPT-User hit in your server logs is the closest thing to seeing ChatGPT read your page for a live answer. Whether the answer then cites it is another matter, covered in fetched vs cited sources.

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See the fan-out for your own prompts

Only Fan Out is a free Chrome side panel that lists the queries, fetched pages and cited pages behind each ChatGPT, Claude or Grok answer. Nothing leaves your browser.

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