llms.txt spec: what its llms.txt contains
Measured on 2026-08-03: 648 B, 1 sections, 3 links. How that compares with the other 112 files we track, and what it implies.
Last updated:
The file
llms.txt spec publishes an llms.txt at
https://llmstxt.org/llms.txt.
The file declares itself as llms.txt in its H1, and the host is categorised here as other. It was last fetched and parsed on 2026-08-03.
Measured structure
| Measure | llms.txt spec | Corpus median | Percentile |
|---|---|---|---|
| Size | 648 B | 14.0 KB | 1th |
| H2 sections | 1 | 7 | 9th |
| Links | 3 | 76 | 12th |
| Blockquote summary | Present | 90 of 113 have one | n/a |
Percentiles are against the 113 files in this directory, not against the web. That population is deliberately weighted toward documentation platforms and developer tools, which is where the convention started, so treat it as a peer group rather than a norm.
Observations
- 3 links is a tightly curated file, well under the corpus median of 76. That is the shape the proposal describes.
- At 648 B this is one of the smallest files in the directory, which usually means a stub rather than a finished index.
Comparable files
Closest in size within other, from the same weekly check:
- Answer.AI: 760 B, 1 sections, 3 links
- nbdev: 4.2 KB, 3 sections, 29 links , no blockquote summary
- llmtxt.info (this site): 10.1 KB, 10 sections, 90 links
How this was measured
Our checker fetches /llms.txt for every host in the directory, follows redirects, confirms
the response is Markdown rather than an HTML error page, and parses it with the same parser that powers
our validator. Sizes are of the served body, sections are H2 headings,
and links are Markdown links anywhere in the file. The run behind this page completed on 2026-08-03.
Want to check a file yourself, including this one? Paste the URL into the validator. To see how to find any site's file, see how to find a website's llms.txt, and for the full list see the directory of 113 verified files.