We grade popular websites on how easily AI agents and LLM crawlers (ChatGPT, Claude, Perplexity) can find, read, and cite them.
The spread is wide — and some big names score surprisingly low.
Grading these sites live… each grade below is computed by the grader right now, in your browser — never a stale screenshot.
Each site is scored on the concrete signals that decide whether an LLM crawler can use it: an llms.txt summary, an intentional AI-bot policy in robots.txt (GPTBot, ClaudeBot, Google-Extended, PerplexityBot), schema.org structured data, server-rendered content (many AI crawlers don't run JavaScript), a sitemap, and core metadata. The result is a score out of 100 and a grade from A to F.
Notably, a site can look perfect in a browser and still score an F: if its content only appears after JavaScript runs, or it has no structured data and no llms.txt, AI models simply can't read it. Because the grades here are measured live, they reflect each site's homepage at the moment you loaded this page — re-load to re-grade.