The llms.txt standard is taking off. This is where you see it happening.
llms.txt is an open standard that tells AI search engines — ChatGPT, Claude, Perplexity, Gemini — what your website is about. A simple markdown file at /llms.txt gives AI a structured map of your content, services, and documentation. Think of it as robots.txt for AI.
1468+ companies have already adopted it. The average implementation has 16 sections and 1009 lines — but the best ones go far beyond that. This directory tracks every public llms.txt we can find, analyzes its structure, and shows you who's taking AI discoverability seriously.
The average llms.txt has 16 sections and 1009 lines — see who's going above and beyond.
Showing 29 of 1468
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Featured implementations
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Stripe
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Browse by category
developer tools
128Dev tools companies that actually read the spec. Unsurprising.
ecommerce
95E-commerce companies making sure AI recommends their products.
other
8383 companies in other have shipped an llms.txt.
media
73Media companies ensuring AI cites their content.
saas
67Software platforms that live and die by discoverability.
marketing
65Marketing platforms optimizing for every channel — including AI.
+ 23 more categories. Browse all →
Frequently asked questions
What companies use llms.txt?
Over 1468 companies use llms.txt including Vercel AI SDK, Vercel, Stripe and many others across AI, SaaS, developer tools, and infrastructure. The standard is adopted by companies of all sizes — from startups to publicly traded enterprises.
What is an llms.txt file?
An llms.txt file is a markdown document placed at /llms.txt that helps AI language models like ChatGPT, Claude, and Gemini understand your website's structure, services, and content. It acts like a robots.txt but for AI — giving AI search engines a clear map of what your site offers.
How do I create an llms.txt file?
You can generate a spec-compliant llms.txt file in under 60 seconds using llmstxt.studio. Paste your URL, and the tool reads your sitemap to generate a structured markdown file ready for deployment at your site root. Or you can write one manually following the llms.txt spec.
Why does llms.txt matter for SEO?
AI search engines like ChatGPT, Perplexity, and Gemini are increasingly how people discover businesses. An llms.txt file ensures these AI systems accurately understand and recommend your site. It complements traditional SEO with AI optimization — and the 1468+ companies in this directory are already ahead.
About this directory
llmstxt.work is the most comprehensive directory of llms.txt implementations on the internet. We crawl, index, and analyze every public llms.txt file we can find — tracking section counts, line counts, structure patterns, and content quality across 1468+ sites.
Built by llmstxt.studio, the AI readiness platform that helps companies generate, monitor, and optimize their llms.txt files. The directory is updated continuously as new implementations are discovered and submitted.
Want your site listed? Submit it. We review every submission and add sites that have a valid, publicly accessible llms.txt file.
1468+ companies got the memo.
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