Glossary
What is llms.txt?
llms.txt is a plain text file at the root of a website that gives AI assistants a short summary of the site and links to its most important pages. It is a proposed convention, and AI companies have not committed to reading it.
Why it matters
The idea is the same as a sitemap, written for language models: a short, clean description that is easier to process than a full web page with menus and scripts.
Because support is not confirmed, the file should be treated as a low-cost addition and not as a way to rank in AI answers.
How we handle it
We publish one where it takes little effort and keep it in line with the site. You can read ours at seo-catalyst.com/llms.txt. The work that changes AI answers is elsewhere: clear pages, structured data and mentions on trusted sites.
Related service: AI SEO services (GEO)
Related terms
Keep reading
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Generative engine optimization (GEO)
Generative engine optimization is the work of getting a brand mentioned and cited in answers written by AI assistants such as ChatGPT and Gemini.
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Schema markup
Schema markup is code added to a page that describes its content in a format search engines read directly.
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