246 of the top 1,000 sites answer /llms.txt with 200. Only 114 serve the file.

I checked llms.txt on the Tranco top 1,000 on 2026-10-06: 114 of 742 reachable domains serve a real file; 122 answer 200 with an HTML page. Format, size, dead links, and a check that doesn't lie.