Detailed definition
llms.txt is the AI-era equivalent of robots.txt. When AI engines (ChatGPT, Claude, Perplexity and others) crawl the brand, they read /llms.txt first and describe the brand correctly. Contents: a short brand definition, company details, service areas, certifications, frequently asked questions and a list of the important pages. For multiple languages, variants such as /llms-en.txt and /llms-de.txt are created. It was standardised in 2024 and is a core component of GEO.
Examples
- paninnovation.com/llms.txt — PAN's AI brief, 100+ lines of Markdown.