# llms.txt explained | Propel

Source: https://runpropel.com/glossary/llms-txt

Glossary

# What is llms.txt?

llms.txt is a plain text file at the root of a website that gives language models a short guide to the site: what it is and which pages matter, with links. It was proposed in 2024. There is no good evidence yet that it changes what AI assistants say.

## What goes in it?

A title, a one-paragraph summary, then lists of links to the pages worth reading, ideally as plain Markdown copies. Some sites add llms-full.txt , the full text of every page in one file. The proposal is at [llmstxt.org](https://llmstxt.org).

## Does it work?

There is no good evidence yet that it changes what AI assistants say about a site. It is cheap to make, so many sites add one anyway.

## What does Propel do?

Propel doesn't count it as a fix. When it checks whether AI crawlers can read your site, it lists llms.txt as an optional extra with no measured effect. If your site has one, the connector Propel builds for ChatGPT and Claude reads it with your docs. This site has one too, at [/llms.txt](https://runpropel.com/llms.txt), for the same reason: it is free. See [Get found](https://runpropel.com/get-found).

Where Propel does this

[Get found →](https://runpropel.com/get-found)

Related terms

- [AI crawlers](https://runpropel.com/glossary/ai-crawlers)
- [Generative engine optimisation (GEO)](https://runpropel.com/glossary/generative-engine-optimisation)
- [Answer engine optimisation (AEO)](https://runpropel.com/glossary/answer-engine-optimisation)
- [All terms](https://runpropel.com/glossary)