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Discover everything you need to know about AI crawlers, from GPTBot to ClaudeBot. Learn how to control access, optimize for AI visibility, and prepare for the AI-powered web.
The web is experiencing a fundamental shift. While traditional search engines like Google have dominated how content is discovered for decades, a new generation of AI crawlers is quietly reshaping the digital landscape. These automated bots don't just index content for search results - they feed the large language models (LLMs) that power ChatGPT, Claude, Gemini, and other AI systems that millions of people use daily. Understanding this shift is crucial for GEO success. If you're a website owner, content creator, or digital marketer, understanding AI crawlers isn't just important - it's essential for staying relevant in the AI-powered web of tomorrow.
AI crawlers are specialized web robots that do more than index pages for search engines - they harvest public content in bulk to train large-language models (LLMs) or fetch pages on-demand to power AI assistants. Unlike traditional crawlers, they can generate significant traffic loads or bypass typical crawling rules when triggered by user queries.
Continuously scan the public web to build datasets for model pre-training (e.g., GPTBot, ClaudeBot).
Construct specialized search indexes for AI-powered search features (e.g., OAI-SearchBot, PerplexityBot).
Activate only when a user requests live page content via an AI assistant (e.g., ChatGPT-User, Claude-User, Perplexity-User).
GPTBot
Mozilla/5.0 … (compatible; GPTBot/1.0; +https://openai.com/gptbot)OAI-SearchBot
…compatible; OAI-SearchBot/1.0; +https://openai.com/searchbot)ChatGPT-User
…compatible; ChatGPT-User/1.0; +https://openai.com/bot)Source: OpenAI Bots documentation
ClaudeBot
…compatible; ClaudeBot/1.0; +https://www.anthropic.com/)Claude-SearchBot
Claude-SearchBotClaude-User
Claude-UserSource: Anthropic Support – crawler details
PerplexityBot
Mozilla/5.0 … (compatible; PerplexityBot/1.0; +https://perplexity.ai/perplexitybot)Perplexity-User
…compatible; Perplexity-User/1.0; +https://perplexity.ai/perplexity-user)Source: Perplexity Crawlers guide Once you understand how AI crawlers work and access your content, learn how to optimize for them with our detailed guides: How to Rank on ChatGPT and How to Improve Visibility on Perplexity.
Starten Sie ein kostenloses Audit: In wenigen Minuten beantworten ChatGPT, Gemini und Perplexity live 8 Kauffragen zu Ihrem Markt, und Sie sehen, wen sie empfehlen.
Googlebot / Google-Extended
Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html) plus an optional Google-Extended token.Source: Google Crawler Overview
Bingbot
…compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm)Source: Bing Crawl Control docs
Applebot / Applebot-Extended
Applebot/0.1 (+http://www.apple.com/go/applebot)Applebot-Extended/1.0 (+http://www.apple.com/go/applebot)Source: Apple Support – About Applebot
Amazonbot
Mozilla/5.0 … Safari/600.2.5 … (Amazonbot/0.1; +https://developer.amazon.com/support/amazonbot)Source: Amazon Developers – About Amazonbot
facebookexternalhit
facebookexternalhit/1.1 (+http://www.facebook.com/externalhit_uatext.php)Meta-ExternalAgent / Meta-ExternalFetcher
meta-externalagent/1.1 (+https://developers.facebook.com/docs/sharing/webmasters/crawler)meta-externalfetcher/1.1 (+https://developers.facebook.com/docs/sharing/webmasters/crawler)Source: Meta Web Crawlers docs
CCBot
CCBot/2.0 (+https://commoncrawl.org/)Source: Common Crawl
Sehen Sie die erfassten Websuchen hinter den Antworten unterstützter Modelle und die Content-Lücken, die sie offenlegen.
Regularly scan your server logs for the User-Agent tokens listed above to quantify AI-crawler traffic. For deeper insights - such as request rates over time, burst patterns, and unexpected crawlers - use Qwairy Crawler Analytics, which automatically parses logs, tags known AI bots, and highlights anomalies.
Define explicit User-agent: rules in your robots.txt to allow or block each crawler. Then, verify compliance directly in the Qwairy dashboard: it checks your live robots.txt, flags syntax errors, and simulates how each AI crawler will interpret your directives, ensuring you don't accidentally over- or under-expose content. Explore comprehensive GEO tools for crawler management.
Beyond classical webmaster tools, rely on Qwairy Crawler Analytics to:
AI crawlers are specialized web robots that harvest public content to train large language models (LLMs) or fetch pages on-demand for AI assistants. Unlike traditional crawlers that primarily index for search results, AI crawlers can generate significant traffic loads and may bypass typical crawling rules when triggered by user queries.
There are three main types:
The major AI crawler operators include:
You can track AI crawlers by:
Control AI crawler access through your robots.txt file by defining explicit User-agent rules for each crawler. You can:
Tools like Qwairy can help validate your robots.txt configuration and simulate how each crawler will interpret your directives. Want to track AI crawler activity on your website and optimize your AI visibility? Try Qwairy's AI Traffic Analysis to monitor how AI systems interact with your content and make data-driven decisions about your AI crawler strategy. Learn more about tracking brand mentions across AI platforms.
Verfolgen Sie die Fragen, die für Ihr Geschäft zählen, sehen Sie, welche Marken jede Antwort erwähnt und welche Quellen sie zitiert, und arbeiten Sie an den Lücken.
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