AI companies
CompanyTo train its modelsTo answer people and search
- OpenAIChatGPTTo train its modelsKept out
GPTBotline 324To answer people and searchPartlyOAI-SearchBotlet inChatGPT-Userline 318, kept out - AnthropicClaudeTo train its modelsKept out
ClaudeBotline 330anthropic-ailine 327Claude-Webline 321To answer people and searchPartlyClaude-SearchBotline 332, kept outClaude-Userlet in - GoogleGeminiTo train its modelsLet in
Google-ExtendedTo answer people and searchLet inGoogle-CloudVertexBot - PerplexityTo train its modelsNone namedTo answer people and searchKept out
PerplexityBotline 335Perplexity-Userline 337 - MetaMeta AITo train its modelsLet in
meta-externalagentFacebookBotTo answer people and searchLet inmeta-externalfetchermeta-webindexer - AppleApple IntelligenceTo train its modelsLet in
Applebot-ExtendedTo answer people and searchNone named - AmazonTo train its modelsLet in
AmazonbotTo answer people and searchLet inAmzn-SearchBotAmzn-User - Common Crawlopen data for trainingTo train its modelsKept out
CCBotline 315To answer people and searchNone named - ByteDanceTo train its modelsLet in
BytespiderTikTokSpiderTo answer people and searchNone named - MistralLe ChatTo train its modelsNone namedTo answer people and searchLet in
MistralAI-User
None of the 27 other AI crawlers we know is kept out.
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.