llms.txt Reality Check: ~10% of Sites Have It, AI Search Engines Almost Never Read It
llms.txt — a proposed markdown 'map' for language models — now sits on roughly one in ten sites. But in 90 days of 500M+ AI-bot visits, only a few hundred fetched it, and Google has explicitly said it doesn't use it. Here's the honest split: near-zero value for AI search, real value for developer tooling.











