AI companies
CompanyTo train its modelsTo answer people and search
- OpenAIChatGPTTo train its modelsKept out
GPTBotline 40To answer people and searchKept outOAI-SearchBotline 118ChatGPT-Userline 43 - AnthropicClaudeTo train its modelsKept out
ClaudeBotline 61anthropic-ailine 49Claude-Webline 64To answer people and searchLet inClaude-SearchBotClaude-User - GoogleGeminiTo train its modelsKept out
Google-Extendedline 73To answer people and searchLet inGoogle-CloudVertexBot - PerplexityTo train its modelsNone namedTo answer people and searchKept out
PerplexityBotline 79Perplexity-Userline 112 - MetaMeta AITo train its modelsLet in
meta-externalagentFacebookBotTo answer people and searchPartlymeta-externalfetcherline 76, kept outmeta-webindexerlet in - AppleApple IntelligenceTo train its modelsKept out
Applebot-Extendedline 55To answer people and searchNone named - AmazonTo train its modelsKept out
Amazonbotline 52To answer people and searchLet inAmzn-SearchBotAmzn-User - Common Crawlopen data for trainingTo train its modelsKept out
CCBotline 46To answer people and searchNone named - ByteDanceTo train its modelsPartly
Bytespiderline 58, kept outTikTokSpiderlet inTo answer people and searchNone named - MistralLe ChatTo train its modelsNone namedTo answer people and searchKept out
MistralAI-Userline 88
7 of the 27 other AI crawlers we know are kept out: cohere-ai, Diffbot, Timpibot, YouBot, DeepSeekBot and 2 more.
What it tells AI crawlers
It gives no Content Signals and no “noai” tag.
Like 32% of the 1,691 popular sites whose robots.txt we read in October 2026, it keeps at least one AI training crawler out. How many websites block AI crawlers?
We read the site once, as our named bot: its robots.txt, read as crawlers read it, its home page and the files AI tools ask sites for. What we couldn’t read says so. robots.txt asks and doesn’t enforce: a firewall can treat AI crawlers differently from us.