AI bot index · #430 most visited · Checked 2026-09-28
Does claude.ai block ChatGPT, Claude and Perplexity?
Yes. claude.ai's robots.txt blocks OAI-SearchBot, ChatGPT-User, so ChatGPT cannot read its home page, and it also blocks AI training.
Crawler by crawler
- Google Search Googlebotallowed
- Bing (also feeds ChatGPT search and Copilot) Bingbotallowed
- ChatGPT search OAI-SearchBotblocked
- ChatGPT reading a link ChatGPT-Userblocked
- Perplexity PerplexityBotallowed
- Claude search Claude-SearchBotallowed
- Gemini (Google AI) Google-Extendedblocked
- OpenAI model training GPTBot training onlyblocked
- Anthropic model training ClaudeBot training onlyallowed
From claude.ai/robots.txt, home page path. Re-check it live
History
Same as shown above since 2026-09-28. We re-check it every few days.
We read each site's robots.txt as an ordinary visitor sees it and test the home page path (/) for each crawler, using the same rules Google documents (most specific group, longest matching rule). Some sites serve a different robots.txt to verified crawlers, and a site can allow the home page but block other sections, so treat this as what the public file says, not a guarantee.
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