Definition

AI Crawler

An automated bot operated by an AI company that fetches web pages for training or live answering.

Full definition

AI crawlers are bots like GPTBot (OpenAI), ClaudeBot (Anthropic), PerplexityBot (Perplexity), Google-Extended (Gemini), and CCBot (Common Crawl). Each has its own user-agent string and respects robots.txt directives. Some are for training, some for live retrieval — knowing the difference matters when deciding what to allow.

Why it matters

Blocking the wrong crawler can quietly remove you from major AI surfaces. The default 'allow all' posture is usually correct unless you have a specific licensing or compliance reason to opt out.

Example

Major AI crawlers in 2026: GPTBot, OAI-SearchBot, ChatGPT-User, ClaudeBot, anthropic-ai, claude-web, PerplexityBot, Perplexity-User, Google-Extended, CCBot, Meta-ExternalAgent, MistralAI-User.

Related terms

robots.txt

A file at the root of your domain that tells crawlers which paths they're allowed to fetch.

GPTBot

OpenAI's web crawler that gathers training data for ChatGPT models.

llms.txt

A plain-text file at the root of your site that tells AI models which URLs are worth reading.

Put it into practice

Run a free OptimAIze scan to see how your site handles AI Crawler and the rest of the GEO checklist.

Run free scan

Frequently asked questions

Is AI Crawler the same as SEO?

No. AI Crawler is one piece of the broader GEO (Generative Engine Optimization) program that sits on top of classical SEO. The two work together — classical SEO gets you crawled and indexed; AI Crawler is part of what gets you cited by AI engines.

Do I need a tool to implement AI Crawler?

For most teams, a free scanner like OptimAIze is enough to identify what's missing. Implementation is usually a copy-paste of generated markup or a small code change — no specialist tool required.