Question
Is llms.txt an official standard?
No. llms.txt is a community proposal introduced by Jeremy Howard / Answer.AI in 2024 — it is not a W3C or IETF standard, and no major AI provider has publicly confirmed consuming it. It is a useful convention, not an enforced or guaranteed channel.
What that means for you
- Adopting it is low-cost and harmless, but do not expect guaranteed pickup.
- It does not replace
robots.txt,sitemap.xml, or crawlable pages. - Treat it as a curated source map, not a ranking mechanism.
Where to put it
Publish a concise file at /llms.txt (site root) listing your strongest canonical pages with one-line descriptions.
Related pages: does ChatGPT use llms.txt, where to submit llms.txt, the llms.txt guide.