Glossary
What Is llms.txt? A Plain-English Guide for Website Owners
llms.txt is a plain-text file placed at the root of your website (yoursite.com/llms.txt) that gives AI models like ChatGPT, Claude, and Perplexity a short, clean guide to your most important pages and facts, so they can read and cite your business more accurately.
Think of llms.txt as a menu you hand to AI tools. A normal web page is full of menus, pop-ups, ads, and code that an AI has to dig through. An llms.txt file skips all that and lists, in plain text, the pages and details you most want an AI to pick up, like your hours, your services, your pricing page, and your contact info.
The format is simple. You write it in Markdown, which is just text with a few symbols like # for headings and dashes for lists. You start with your business name and a one-line description, then add links to your key pages with a short note on each. You save the file as llms.txt and put it at the top level of your domain, so it lives at yoursite.com/llms.txt.
Here's a quick example for a dental office. The file might say: '# Bright Smile Dental. A family dentist in Austin, TX. Open Mon-Fri 8am-5pm.' Then a few links: '- [Services](/services): cleanings, fillings, whitening. - [Book an appointment](/book): online scheduling. - [Contact](/contact): phone and address.' That's the whole idea. Short, clear, and easy for a model to read.
This matters because more people now ask AI assistants questions instead of typing into a search bar. Someone might ask Claude or ChatGPT, 'Is there a dentist near me open on Fridays?' If your llms.txt spells out your hours and location, the AI has a better shot at answering correctly and naming your business.
If you run a chat or voice agent on your site, like the one Venbit builds, the same source of clean facts feeds both. The agent uses your structured content to answer visitors out loud or in chat, and an llms.txt export gives outside AI tools the same accurate picture. One set of facts, used in more than one place.
llms.txt is a proposed standard, not an official rule yet, so not every AI tool reads it today. Still, it costs little to add, and it puts your best information in a spot AI models are starting to check first.
Frequently asked questions
Is llms.txt the same as robots.txt?+
No. robots.txt tells search engine crawlers which pages they're allowed to visit. llms.txt is different: it hands AI models a short, friendly summary of your most important content so they can read and quote it more accurately. You can use both files at the same time.
Do I have to be a developer to create an llms.txt file?+
Not really. The file is plain text written in Markdown, so you can build it in any text editor. The harder part is uploading it to the root of your domain, which usually means access to your hosting or website builder. Some tools and platforms can also generate and host it for you.
Does every AI tool actually read llms.txt?+
Not yet. llms.txt is a newer proposed standard, so support varies and some models still pull from your regular pages. Adding the file is low effort, though, and it can only help as more AI tools begin checking for it.