Agent Grade / AI bots by site / oreilly.com
Does oreilly.com block ChatGPT?
oreilly.com blocks AI training but lets AI search in. ChatGPT search is allowed, and OpenAI's training bot is blocked. From its public robots.txt, checked 23 to 24 October 2026. It ranks #1,924 on the Tranco list of top sites.
| Bot | What it does | Home page | Deciding rule |
|---|---|---|---|
| Googlebot | Google Search | Allowed | User-agent: Googlebot / Allow: / |
| Bingbot | Bing / Copilot | Allowed | User-agent: Bingbot / Allow: / |
| OAI-SearchBot | ChatGPT search | Allowed | User-agent: OAI-SearchBot / Allow: / |
| ChatGPT-User | ChatGPT (user asks) | Allowed | User-agent: ChatGPT-User / Allow: / |
| GPTBot | OpenAI training | Blocked | User-agent: GPTBot / Disallow: / |
| Claude-SearchBot | Claude search | Allowed | User-agent: Claude-SearchBot / Allow: / |
| Claude-User | Claude (user asks) | Allowed | no rule blocks it |
| ClaudeBot | Anthropic training | Allowed | User-agent: ClaudeBot / Allow: / |
| PerplexityBot | Perplexity search | Allowed | User-agent: PerplexityBot / Allow: / |
| Perplexity-User | Perplexity (user asks) | Allowed | User-agent: Perplexity-User / Allow: / |
| Google-Extended | Gemini training | Allowed | User-agent: Google-Extended / Allow: / |
| Applebot-Extended | Apple AI training | Allowed | User-agent: Applebot-Extended / Allow: / |
| CCBot | Common Crawl | Blocked | User-agent: CCBot / Disallow: / |
| meta-externalagent | Meta AI | Blocked | User-agent: meta-externalagent / Disallow: / |
| Bytespider | ByteDance | Blocked | User-agent: Bytespider / Disallow: / |
"Blanket rule": oreilly.com never names that bot; a rule for every bot (User-agent: *) applies. llms.txt: Yes. robots.txt is what a site asks bots to do; some sites also block bots at the network edge.
Questions
Does oreilly.com block ChatGPT search?
No. In its robots.txt as checked 23 to 24 October 2026, oreilly.com lets OAI-SearchBot, the crawler behind ChatGPT search, read its home page.
Does oreilly.com block GPTBot?
Yes. oreilly.com blocks GPTBot, OpenAI's training crawler (User-agent: GPTBot / Disallow: /).
Does oreilly.com block Claude?
ClaudeBot (Anthropic training): allowed. Claude-SearchBot (Claude search): allowed. Claude-User (fetches for a person): allowed.
Does oreilly.com have an llms.txt file?
Yes, oreilly.com serves an llms.txt file.
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