GPTBot
GPTBot is OpenAI's web crawler that collects content to train its AI models. Blocking it does not remove you from ChatGPT search results.
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What GPTBot means
GPTBot identifies itself in the user agent string and respects robots.txt. Disallowing it tells OpenAI not to use your pages in future model training. ChatGPT search uses a different crawler, OAI-SearchBot, so the two can be controlled separately.