What is llms.txt?
llms.txt is a text file placed at the root of your site that hands AI models a clean, structured version of your content — the format AIs read best. It is one of the foundations of GEO.
Request your GEO audit
Reply by email and WhatsApp within 30 min during business hours.
We got your request!
We will reach out by email and WhatsApp shortly. Keep an eye on your messages.
Quick definition
llms.txt is an emerging standard: a markdown text file, hosted at yoursite.com/llms.txt, that presents your site's most important information in a clean, organized way for Large Language Models (LLMs). Instead of making the AI crawl HTML full of menus, scripts and ads, you hand over a curated index: who you are, what you offer and links to the pages that matter.
What it is for
Modern web pages are heavy for machines: lots of JavaScript, navigation, pop-ups and noise. llms.txt solves this by delivering the essential content in plain text, easy to read and cite. The goal is simple: increase the chance the AI understands and cites your brand correctly.
- Clarity — the AI gets a curated summary, free of layout noise.
- Control — you decide which pages and descriptions to highlight.
- Citation — readable content is more citable content.
What the structure looks like
The file uses simple markdown. A concise example:
# Company name— main title (H1).> Summary— one sentence explaining what you do.## Key pages— a markdown list of links with a brief description of each.## Optional— secondary resources the AI can skip if context is limited.
Many sites complement it with an llms-full.txt (full content) and .md versions of each page, delivering the entire text in clean markdown.
llms.txt vs robots.txt vs sitemap.xml
They are complementary, not competitors:
| File | For whom | Function |
|---|---|---|
| robots.txt | Search crawlers | Tells what can or cannot be crawled |
| sitemap.xml | Search crawlers | Lists all URLs for indexing |
| llms.txt | AI models (LLMs) | Delivers curated, clean content for understanding and citation |
How to implement it
On static sites (like those built with Astro), llms.txt can be generated at build time from your own content, always up to date. The basic steps:
- Map the pages you want the AI to know about.
- Write an objective summary of the brand and of each page.
- Generate
/llms.txt(and, optionally,/llms-full.txtand.mdper page). - Combine it with structured data (JSON-LD) and citable content — llms.txt alone doesn't do GEO, it is one of the layers.
Rollin Host implements llms.txt — alongside markdown per page, full JSON-LD and citable content — on its own site and on clients' sites. We don't sell theory: we sell the stack that already runs here.
Common questions about llms.txt.
Is llms.txt mandatory?
No. It is an emerging, voluntary standard, not yet officially adopted by every AI. But it is cheap to implement and part of a well-done GEO strategy, alongside structured data and citable content.
Does llms.txt replace robots.txt or sitemap?
No. They are files with different purposes: robots.txt controls crawling, sitemap.xml lists URLs for indexing, and llms.txt delivers curated, clean content for AI models. They coexist.
On its own, does llms.txt make my brand appear in ChatGPT?
Not in isolation. It increases your content's readability, but GEO is a set: llms.txt, structured data, citable content and entity authority work together.
What is llms-full.txt?
It is an extended version that includes the full page content in markdown, not just the index. Useful for giving the AI the entire text to work with.
Does Rollin implement llms.txt for me?
Yes. It is part of the GEO service — we implement llms.txt, markdown per page, JSON-LD and citable content, with monitoring of AI citations.
Pronto pra hospedar seu projeto de IA?
Comece em 5 minutos. Migração gratuita, suporte 24/7 em português e garantia de reembolso de 7 dias (30 dias em hospedagem de sites e WordPress).
