llms.txt: gadget or tomorrow's standard?
The llms.txt file offers a site map designed for AIs. A review of its adoption and its real usefulness.
In short:
- llms.txt is a Markdown file at the site root that points AI models to key content.
- Adoption is growing among documentation publishers and SaaS.
- No engine officially commits to reading it, but its cost is near zero.
After robots.txt and sitemap.xml, here comes llms.txt. A text file describing the site to language models.
What the file contains
A title, a summary of the site, then lists of links organized by section, with a short description per link. All in readable Markdown.
Who actually reads it
AI crawlers fetch it, which is measurable in logs. What they do with it remains opaque. The bet is asymmetric: minimal cost, real potential gain.
Our position
We deploy it systematically. AI visibility is built on a bundle of signals, as shown by the ChatGPT versus Perplexity match.