What is llms.txt?

llms.txt is a plain-text file placed at a website's root that gives AI systems a curated, Markdown-formatted map of the site's most important content, so models can find and parse it without crawling the full HTML.

How it works

The file lists key pages with short descriptions, in Markdown, in priority order: a deliberate, human-curated guide to what matters on the site. It was proposed by Jeremy Howard of Answer.AI in 2024 as a standard, and support depends on whether a given AI system chooses to read it.

Adoption is still early, which is the opportunity. In rawmktg's AEC teardown, zero of six companies had published an llms.txt file. Being among the first in a category to ship one is a low-cost signal almost no competitor has matched.

llms.txt vs robots.txt

robots.txt controls access: which crawlers may visit which paths. llms.txt guides attention: which content a model should prioritise and how to read it. One restricts, the other curates, and they are used together.

Why it matters for B2B

It is one of the cheapest GEO moves available: a single static file that makes your best content easier for models to locate and parse, in a field where most competitors have not published one.

# Acme

> Acme builds X for Y teams.

## Key pages
- [What is X](https://acme.com/x): one-line summary
- [Pricing](https://acme.com/pricing): one-line summary