Only 10.13% of sites have llms.txt, and the two largest 2026 studies found no measurable citation lift. What the file does, what it doesn't, and the time budget we'd spend instead.

Only 10.13% of sites have llms.txt, and the two largest 2026 studies found no measurable citation lift. What the file does, what it doesn't, and the time budget we'd spend instead.