How-to

llms.txt Explained: What It Is and How to Write One in 2026

By AIRanQ · 24 August 2026 · 5 min read

Key takeaways

  • llms.txt is a simple Markdown file at yoursite.com/llms.txt that summarizes your site for AI models.
  • It's a proposed convention — no major AI provider has publicly confirmed reading it in production yet.
  • It's still worth publishing: low cost, positive signal, and it forces you to write a clean summary.
  • Keep it short: a one-paragraph description plus links to your most important pages.

The short answer

llms.txt is a plain-Markdown file you publish at yoursite.com/llms.txt that gives AI models a clean, curated summary of your business and links to your most important pages. It's a proposed convention with no standards-body backing, and no major AI provider has publicly confirmed reading it in production as of 2026 — but it's a low-cost, positive signal that takes about 15 minutes to write.

What it is

Think of llms.txt as a robots.txt for meaning instead of access. Where robots.txt tells crawlers what they can fetch, llms.txt tells AI models what your site is and which pages matter — in clean Markdown they can parse without wading through your navigation, banners and scripts.

Does it actually work?

Be honest with yourself

As of 2026, llms.txt is a proposed convention with no standards-body backing, and no major provider has publicly confirmed reading it in production. Treat it as a cheap, sensible bet — not a magic switch.

So why bother? Three reasons: it's ~15 minutes of work, it's a positive low-risk signal if adoption grows, and the act of writing it forces you to state — clearly — what you do and who it's for. That clarity helps every engine, llms.txt or not.

What llms.txt does

Your site

messy HTML, nav, scripts

llms.txt

clean summary + links

AI model

understands you faster

How to write one (template)

Create a file named llms.txt in your site's root. Keep it short: a title, a one-paragraph summary that includes a specific detail or two, then grouped links.

What to include

  • A one-line description of what you do and who it's for.
  • One or two concrete specifics — a price, a coverage number, a differentiator.
  • Links to your most important pages, grouped under short headings.

What to leave out

  • Marketing fluff and superlatives — models want facts, not adjectives.
  • Every page on your site. Curate to the handful that matter.
  • Anything you wouldn't want quoted verbatim.

Template

# Your Business — one-line tagline. Then a single paragraph: what you do, who it's for, and one concrete detail (price, coverage, a number). Then sections like ## Product and ## Guides, each a short bullet list of - Label: https://yoursite.com/page.

That's it. Publish it, then check it loads at https://yoursite.com/llms.txt. (AIRanQ publishes one too — you can view ours at /llms.txt for a real example.)

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Frequently asked questions

Where does the llms.txt file go?+

In your website's root, served at https://yoursite.com/llms.txt, exactly like robots.txt. It should be plain Markdown: a title, a short summary paragraph, and grouped links to your key pages.

Will llms.txt get my site into ChatGPT?+

On its own, no. It's a proposed convention that no major AI provider has confirmed reading in production. Getting cited by AI depends more on answer-first content, schema, and being mentioned on trusted third-party sources. llms.txt is a low-cost complement, not a substitute.

Sources

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