GEO & AI Search Glossary
llms.txt
llms.txt is a proposed standard file at a site's root that gives large language models a concise, curated guide to the site's most important content and facts.
Like robots.txt for crawl rules or sitemap.xml for URLs, llms.txt speaks to a new consumer: AI assistants that read your site to answer questions. It typically contains a one-paragraph brand summary and annotated links to key pages in markdown.
It is low-cost insurance: adoption is growing across AI crawlers, it takes an hour to write, and it ensures models describing your brand start from your canonical facts rather than scraps.
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