llms.txt: The New robots.txt for AI Engines

What is llms.txt? Just like robots.txt tells search engine crawlers how to index your site, llms.txt tells AI engines (ChatGPT, Perplexity, Gemini, Claude) how to read and cite your content. 95% of websites don't have one. The ones that do are already getting cited by AI. Why It Matters in 2026 900 million people now use AI instead of searching Google. When someone asks ChatGPT "What's the best CRM for small teams?" — it gives ONE answer. Not ten blue links. One recommendation. If your site doesn't have llms.txt , AI engines can't structured-read your content. You're invisible to 900M users. How to Create llms.txt Create a file at yoursite.com/llms.txt with: # Your Brand Name > One-line description of what you do. ## Key Pages - [ Product Page ]( https://yoursite.com/product ) : What your product does - [ Pricing ]( https://yoursite.com/pricing ) : Your pricing tiers - [ About ]( https://yoursite.com/about ) : Company background - [ Blog ]( https://yoursite.com/blog ) : Latest content