Home › SEO glossary › llms.txt

What is llms.txt?

A plain-text file at the root of your site that summarises it for language models. What it is for, and what it cannot do.

Get a free audit
What is llms.txt?

What is llms.txt, in one sentence?

llms.txt is a proposed convention: a Markdown file placed at /llms.txt that gives language models a short, curated overview of a website and links to its most useful pages.

Agency
Starboost, local SEO and GEO agency, Paris
Client reviews
5/5 across 136 Google reviews
Businesses supported
235+
Certifications
Google Partner Premium, Meta Business Partner

What goes in the file

  • A title and a one-paragraph description of the organisation
  • Sections of links to key pages, each with a short note on what it covers
  • Optionally, a longer llms-full.txt with the content itself in clean Markdown

What it does and does not do

llms.txt is a proposal, not a standard that all AI companies have committed to following, and Google has said it does not use it for ranking. Treat it as a low-cost way to make your site easier to read for tools that choose to use it, not as a ranking lever. It does not replace crawlability, good content or structured data.

How to write a useful one

  1. State plainly who you are, what you do and where you operate.
  2. List your most important service, pricing and contact pages with one line each.
  3. Keep the facts consistent with your Google Business Profile and website.
  4. Update it when services, prices or contact details change.

Do not confuse it with robots.txt

robots.txt tells crawlers what they may access. llms.txt describes what is worth reading. If AI crawlers such as GPTBot, ClaudeBot or PerplexityBot are blocked in robots.txt, a perfect llms.txt will not help. Allowing them is the first step of any GEO project.

Frequently asked questions

Is llms.txt a ranking factor?
No. It is not used by Google for ranking and adoption by AI companies is limited and varies. It is a harmless addition if you maintain it.
Where should the file live?
At the root of the domain, for example example.com/llms.txt, served as plain text or Markdown.

How Starboost applies this for clients

We check AI crawler access, your robots.txt, sitemap and llms.txt as part of our free SEO, GEO and AEO audit.

Request a GEO auditGet a free audit

Starboost is a local SEO and AI search visibility agency based at 40 rue du Colisée, 75008 Paris, working with more than 235 businesses: healthcare professionals, law firms, tradespeople, restaurants and shops. Rated 5/5 across 136 Google reviews, Google Partner Premium and Meta Business Partner. Free audit within 48 hours or by email at [email protected].