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.
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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.
llms-full.txt with the content itself in clean Markdownllms.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.
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.
We check AI crawler access, your robots.txt, sitemap and llms.txt as part of our free SEO, GEO and AEO audit.
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