What is llms.txt and Why Your Site Needs One

llms.txt is a plain-text file placed at the root of your domain (e.g., https://yourdomain.com/llms.txt) that gives AI language models a structured, human-readable overview of your site. It is inspired by robots.txt but serves a different purpose: instead of controlling which pages crawlers can access, it tells AI systems what your site is about, what you offer, and where to find key information. ## What to include - Your organization name and one-sentence description - Key product or service names with brief descriptions - Pricing or tier information (for SaaS tools) - Contact details - Links to key pages ## Why it matters AI crawlers from ChatGPT (OAI-SearchBot), Perplexity (PerplexityBot), and others read llms.txt to build a model of your site before indexing individual pages. Sites with a clear llms.txt signal are better represented in AI-generated summaries and citations. AEOlytix serves its own llms.txt dynamically at https://aeolytix.com/llms.txt — check it to see a working example.