Citare Tools · Free

AI Bot User-Agent Detector.

Paste a User-Agent string — or raw access-log lines, one per row — and we’ll identify which AI bot it is, who runs it, and what role it plays (training corpus / live search / agentic).

Pure client-side. Free. No signup. Nothing leaves your browser.

Known AI bots (21)

The canonical list Citare maintains across the AI Crawler Tracking tool, the Robots Checker, and this page.

Bot	Provider	Class	IP-verifiable?
GPTBot	openai	training	Yes
ChatGPT-User	openai	live_search	Yes
OAI-SearchBot	openai	live_search	Yes
ClaudeBot also: anthropic-ai, Claude-Web	anthropic	training	No (UA-only)
Claude-User	anthropic	live_search	No (UA-only)
Google-Extended	google	training	Yes
Googlebot/ also: Googlebot-Image, Googlebot-Mobile	google	indexing	Yes
GoogleOther	google	indexing	Yes
Google-CloudVertexBot	google	live_search	Yes
PerplexityBot	perplexity	training	Yes
Perplexity-User	perplexity	live_search	Yes
Applebot-Extended	apple	training	No (UA-only)
Applebot	apple	indexing	No (UA-only)
bingbot also: BingPreview	microsoft	indexing	Yes
meta-externalagent	meta	training	No (UA-only)
CCBot	common-crawl	training	No (UA-only)
Bytespider	bytedance	training	No (UA-only)
Diffbot	diffbot	training	No (UA-only)
bravebot also: Brave/Bot	brave	indexing	No (UA-only)
DuckDuckBot	duckduckgo	indexing	No (UA-only)
YandexBot	yandex	indexing	No (UA-only)

What to do with this

Most useful for log analysis: paste a row from your nginx, Apache, or Vercel access log and identify the bot. The reference table below doubles as a paste-ready cheat sheet of which AI bots send which UA strings.

For continuous tracking with IP verification — log every visit, verify against each provider’s published ranges, dashboard the result — see Citare’s AI Crawler Tracking tool.

More free GEO tools

AI crawler attribution is one of four diagnostic axes Citare Studio measures monthly. See Studio →