The llms.txt standard, proposed at llmstxt.org by Jeremy Howard, is the cleanest answer to a real problem: AI engines need a curated, machine-readable map of a site’s most citable content, separate from what crawlers index for human users.
NeverRanked treats llms.txt as a first-class deployment artifact alongside Schema.org JSON-LD. Both layers feed the same goal: make a site reliably citable.
A markdown file at /llms.txt (root). Begins with an H1 that
names the site. Followed by a blockquote that summarizes what the
site does in one or two sentences. Then optional H2 sections
(typically ## Docs, ## Examples, ## API, ## Optional), each
listing curated links in the form - [Title](url): one-line description. A companion /llms-full.txt may concatenate the
full content of all linked pages for direct AI ingestion.
The minimum viable llms.txt is a half-dozen well-chosen links. The maximum is a curated information architecture.
A good llms.txt:
A bad llms.txt:
| Engine | Respects llms.txt? | Notes |
|---|---|---|
| Anthropic / Claude | Yes | Anthropic proposed the standard; Claude reads it preferentially |
| OpenAI / ChatGPT | Stated intent | Public statements indicate respect; behavior inconsistent in scans |
| Perplexity | Inconsistent | Sometimes follows the curated set, sometimes ignores |
| Google AI Overviews | No | Currently uses standard search index |
| Microsoft Copilot | No | Currently uses Bing index |
| Gemini | No | Currently uses Google Search index |
This table changes month to month. NeverRanked’s engine changelog
(content/engine-changelog/) tracks shifts as they happen.
Sites that publish a curated llms.txt give the engines that respect it a deterministic citation surface. Engines that respect llms.txt will weight content listed there above content discovered via crawl. Sites without llms.txt get crawled indiscriminately, with all the noise that implies.
The compounding effect: once one major engine starts treating llms.txt as a strong signal, the others follow. We expect this to happen in the second half of 2026. Sites with llms.txt deployed by that point inherit the advantage. Sites without lose two-to-three months of citation share to faster movers.
For each customer:
The NeverRanked snippet handles llms.txt the same way it handles JSON-LD: a curated, validated layer that updates as the site does.
areaServed, not by serving different llms.txt
files.NeverRanked publishes its own llms.txt at neverranked.com/llms.txt as the reference implementation. Anyone can verify our position is not aspirational by reading what we ship for ourselves.