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/llms.txt, the reference
The reference site on llms.txt
A neutral, bilingual reference on the proposed standard that helps large language models navigate a website: definition, how it works, how to create one, and what it actually does (or does not) today.
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# llmtxt.info
> The reference site on llms.txt: what it is, how it works, how to create one, with a free validator and generator.
## Core pages
- [What is llms.txt](https://llmtxt.info/what-is-llms-txt/): definition, origin, adoption.
- [How it works](https://llmtxt.info/how-it-works/): file structure and parsing rules.
- [How to create llms.txt](https://llmtxt.info/how-to-create/): step-by-step with templates.
- [Comparison](https://llmtxt.info/comparison/): llms.txt vs robots.txt vs sitemap.xml.
## Tools
- [Validator](https://llmtxt.info/validator/): paste a file, read the diagnostics.
- [Generator](https://llmtxt.info/generator/): scaffold a llms.txt from a form.
## Optional
- [FAQ](https://llmtxt.info/faq/): twenty common questions.
- [Glossary](https://llmtxt.info/glossary/): key terms.
What you can do here
01 / Learn
Understand the spec
What llms.txt is, the problem it solves, who proposed it, who adopted it, and its real status in 2026.
What is llms.txt →02 / Build
Create your file
Templates, step-by-step instructions and per-stack guides (Next.js, Astro, WordPress, Cloudflare Pages, Vercel, Netlify).
How to create →03 / Verify
Validate & test
Paste your file in the validator to check conformance, or use the generator to start from a clean baseline.
In one paragraph
llms.txt
is a Markdown file placed at the root of a site (/llms.txt) that gives large language models a curated map of the pages most worth reading. It was
proposed in September 2024 by Jeremy Howard (Answer.AI). It is not a W3C or IETF standard,
and as of 2026 no major LLM provider has publicly committed to consuming it systematically,
but it is widely adopted by documentation platforms (Anthropic, Cloudflare, Stripe,
Mintlify, Vercel, Perplexity) and useful as a stable, machine-readable contract that you
control on your own site.
Sources: llmstxt.org, Answer.AI announcement.
Does llms.txt actually work? Read the factual analysis →Explore the topic
Pages are organized in three clusters: foundations, build guide, and reference. Pick where to start.
Foundations
- What is llms.txt
Definition, origin, adoption. - How it works
Structure, syntax, parsing. - vs robots.txt & sitemap.xml
Which file for what. - Benefits & limitations
What llms.txt really delivers. - Does llms.txt work?
Evidence by use case: AI citations, SEO, tooling. - llms.txt and SEO
Google rankings, GEO, AI traffic.
Build guide
- How to create llms.txt
Templates, deployment, per stack. - Best practices
Ten rules and common mistakes. - Validator
Paste a file, read the diagnostics. - Generator
Scaffold a clean baseline.
Reference
- Real-world examples
Anthropic, Cloudflare, Stripe… - Does Google use llms.txt?
The clear, sourced answer. - Does ChatGPT use llms.txt?
What OpenAI has (not) said. - Find a site's llms.txt
See any website's file. - FAQ
Twenty common questions. - Glossary
Key terms (GEO, AEO, RAG…). - Our /llms.txt
Dogfooding.