As search shifts to AI, a few new standards are emerging to help models read the web. llms.txt is one of them — a small piece of the wider generative engine optimization picture.
What llms.txt actually does
A normal web page is cluttered — menus, ads, scripts, pop-ups. llms.txt strips that away. It's a single readable file that says, in effect, "here is what this site is, and here are the pages that matter, with short summaries." It gives AI models a clean, curated shortcut to your best content.
llms.txt vs robots.txt
| robots.txt | llms.txt | |
|---|---|---|
| Purpose | Permission — what crawlers may access | Guidance — what content matters, summarised |
| Format | Directives (Allow/Disallow) | Readable Markdown |
| Audience | Search crawlers | AI models / LLMs |
| Status | Long-established standard | Proposed, emerging |
They're not rivals — one restricts crawling, the other helps AI understand. You can have both.
How to create an llms.txt file
- Create a Markdown file named llms.txt.
- Start with an H1 — your site or brand name.
- Add a short summary — one or two lines on what your site is.
- List key pages under headings — link your most important URLs with a brief description each.
- Place it at the root — so it lives at yourdomain.com/llms.txt, and keep it curated, not exhaustive.
Do you actually need one?
Honestly: it's optional and unproven. No major AI engine has confirmed llms.txt as a ranking or access requirement, so be sceptical of anyone promising results from it. But it's low-effort and low-risk — a reasonable experiment. Your real AI-search gains still come from answer-first content, schema markup and entity clarity. Check those first with our AI search readiness checker.
Frequently asked questions
What is llms.txt?
llms.txt is a proposed plain-text file you place at the root of your website to help large language models find and understand your most important content. It offers a clean, curated map of key pages and summaries in Markdown, so AI systems can access your best information without wading through navigation, ads and scripts.
How is llms.txt different from robots.txt?
robots.txt tells crawlers which URLs they may or may not access — it is about permission. llms.txt is about guidance: it curates and summarises your key content for AI models in a readable format. One restricts crawling; the other helps AI understand what matters. They serve different jobs and can coexist.
How do I create an llms.txt file?
Create a plain-text file named llms.txt in Markdown, and place it at your domain root, such as example.com/llms.txt. Start with an H1 of your site or brand name, a short summary, then link your most important pages under headings with brief descriptions. Keep it curated and current rather than listing every URL.
Do I need an llms.txt file?
It is optional and still emerging — no major AI engine has confirmed it as a ranking or access requirement. It is low-effort to add and can help AI systems parse your key content, so it is a reasonable, low-risk experiment. It is not a substitute for good content, schema and on-page AI-search fundamentals.
Does llms.txt help with SEO?
There is no confirmed direct SEO or AI-ranking benefit yet, so treat claims with caution. Its value is practical: a clean, curated summary of your best content that AI tools can read easily. Real AI-search gains still come from answer-first content, schema, entity clarity and authority — llms.txt is a small, optional addition on top.
We handle the fundamentals that actually move AI visibility
Answer-first content, schema, entities and the emerging standards — set up so AI engines find, understand and cite your brand.