eightyFree scan →
Home / GEO hub / llms.txt explained
Standard

llms.txt: what it is and how to make one

A simple text file that hands AI a curated map of your site. Promising, low-cost, but not yet an official standard. Here is the honest picture.

See your AI-visibility score

Run a free scan and see how visible your site is to ChatGPT, Perplexity and Google AI, as one of four subscores.

Check your AI visibility →

What is llms.txt?

llms.txt is a proposed standard: a markdown file placed at the root of your domain, at /llms.txt, that gives AI systems a clean, curated map of your most important pages and what they contain. Think of it as a table of contents written for language models instead of humans, so they can find your best content fast.

The idea, published at llmstxt.org, is to reduce guesswork. Instead of crawling everything, a model can read one file that points to what matters.

Does llms.txt actually work yet?

Honestly, adoption is early and unproven. No major AI engine has publicly confirmed that llms.txt changes how it cites you, so treat it as a low-cost bet, not a guaranteed ranking factor. It costs little to add and cannot hurt, but do not expect it to replace crawlability, answer-first content or authority.

We publish our own llms.txt because we recommend it and want to practice what we preach, while being clear about its current limits.

How to make an llms.txt file

Create a plain markdown file named llms.txt at your domain root. Start with an H1 of your site name, a short blockquote summary, then grouped links to your key pages with a one-line description each. Keep it curated, not exhaustive, and serve it as text/plain so any client can read it.

# Your brand

> One sentence on what you do.

## Key pages
- [Home](https://example.com/): what visitors can do here.
- [Pricing](https://example.com/pricing): plans and costs.

See your AI-visibility score

Run a free scan and see how visible your site is to ChatGPT, Perplexity and Google AI, as one of four subscores.

Check your AI visibility →

Frequently asked questions

Is llms.txt the same as robots.txt?
No. robots.txt tells crawlers what they may access, llms.txt suggests which content is most useful and how it is organized. They serve different purposes and you can have both.
Will llms.txt get my site into ChatGPT?
Not on its own. It is optional and not officially used yet. Crawlability, answer-first writing and authority do the heavy lifting. Add llms.txt as a cheap extra, not a substitute.
Does eighty have an llms.txt?
Yes, you can read it at scan.8t.nl/llms.txt. We recommend the file, so we publish one ourselves.