Question 1

What happens if I block GPTBot or ClaudeBot?

Accepted Answer

Blocking a crawler in robots.txt stops that AI lab from fetching your pages at all — meaning its models can't be trained on your content and, for live-fetch bots like ChatGPT-User or Perplexity-User, it can't read your page when a user asks it to.

Question 2

Is blocking AI crawlers ever the right call?

Accepted Answer

It can be, for content you don't want reused (private docs, gated content) or if you want to opt out of training data specifically. But for public marketing pages, blocking AI crawlers usually just makes you invisible to the AI answer engines your buyers are using.

Question 3

What's the difference between GPTBot and OAI-SearchBot?

Accepted Answer

GPTBot crawls to help train OpenAI's models generally. OAI-SearchBot is separate and powers the links ChatGPT shows in search-style answers — you can allow one and block the other if you want search visibility without contributing to model training.

Question 4

No robots.txt found — is that bad?

Accepted Answer

Not necessarily. No robots.txt means no restrictions exist, so every crawler (AI included) is allowed by default. It's a valid choice, though publishing an explicit one that welcomes AI crawlers and points to your sitemap is a small, safe improvement.

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About AI crawlers