How to Set Up llms.txt for Your Website: The Complete 2026 Guide
llms.txt is a plain-text file placed at your website’s root that tells AI engines what your brand does, what problems you solve, and when you should be recommended to users. Think of it as robots.txt for the AI era: robots.txt told search crawlers what to index, llms.txt tells language models what to understand about your business. If you run a business and want ChatGPT, Perplexity, Claude, or Gemini to recommend you, setting up llms.txt is one of the highest-leverage things you can do today. According to a 2025 analysis by Ahrefs, only 1.1% of top-ranking websites have implemented llms.txt so far, which means you have a massive first-mover advantage right now. ...