An AI crawler user agent is a specific identification string used by LLM-based systems like ChatGPT, Claude, and Perplexity to fetch web content for training or real-time citations. Simulating these agents allows developers to ensure JavaScript-rendered content is correctly indexed by AI answer engines.
You can check your server logs for specific user agent strings like 'GPTBot', 'OAI-SearchBot', or 'PerplexityBot'. Alternatively, use Crawlable AI's simulator to see how these bots view your rendered content.
Crawlable AI supports the simulation of over 150 distinct bot user agents across search engines, AI assistants, and social platforms.
Source: Crawlable AI Bot Directory 150+ — Crawlable AIOAI-SearchBot is OpenAI's specialized crawler for ChatGPT search features, functioning separately from the GPTBot training crawler.
Source: AI Bot Directory Reference 1 — Crawlable AIPerplexityBot is currently identified as one of the most active AI crawlers for real-time answer engine indexing.
Source: Crawlable AI Platform Data Top Active — Crawlable AI