What llms.txt actually is
llms.txt lives in your site’s root, the same spot as robots.txt, but it does a different job. It’s a short, human-readable summary of what your site is about: who you are, what the key sections and resources are, and where to find them. The idea is simple: save an AI model the trouble of parsing your navigation and markup just to figure out what you actually do.
llms.txt vs. robots.txt vs. sitemap.xml
| File | What it’s for |
|---|---|
| robots.txt | controls crawler access: what bots are and aren’t allowed to fetch |
| sitemap.xml | lists every page on the site for search engine crawlers |
| llms.txt | a human-readable map of your key content, written for AI models |
Why bother adding it
- •It helps an AI model get oriented on your site faster, instead of guessing from scattered pages,
- •It raises the odds that AI answers mentioning your business are accurate and current,
- •It’s cheap, basic GEO hygiene: a few minutes of work with real upside and no real downside.
For the bigger picture on GEO, and on actually getting cited rather than just crawled, see What Is Generative Engine Optimization? and How to Get Cited by ChatGPT and Perplexity. Setting all of this up alongside your regular SEO is exactly what an AI SEO Specialist does.
Frequently asked questions
Does llms.txt replace robots.txt and the sitemap?
No, it adds to them. robots.txt controls crawler access, the sitemap lists your pages for search engines, and llms.txt gives an AI model a short, human-readable map of your key content. They solve different problems, so there’s no conflict in running all three.
Is llms.txt an official standard?
It’s an emerging convention that more projects, frameworks, and tools keep adopting, not a ratified standard with guaranteed support. No AI model is required to read it. It costs almost nothing to add and carries real upside for AI visibility, so the downside case is basically nonexistent.
Is it actually worth adding?
Yes, if AI visibility matters to your business. The file is simple, you write it once, and it helps AI models understand what you offer and where to find it. Treat it as one piece of basic GEO hygiene, alongside open crawler access and content that’s actually structured to be quoted.