What is LLMs.txt?
The emerging standard that helps AI assistants understand, find, and recommend your business.
The Short Version
LLMs.txt is a file that lives on your website and tells AI
assistants what your business does, what you sell, and how to
recommend you. Think of it like what robots.txt did for Google -- but designed for AI assistants like ChatGPT, Claude,
and Gemini.
Without an LLMs.txt file, AI assistants are essentially blind to your business. They cannot recommend what they cannot find.
Why Does This Matter?
The way people search for products and services is changing. Instead of typing keywords into Google, millions of people now ask AI assistants directly:
- - "What's the best coffee shop near me?"
- - "Recommend a good project management tool for small teams"
- - "What are the best hiking boots under $200?"
If your business does not have structured, AI-readable content, you will not show up in these answers. Your competitors who do have it will be recommended instead.
How LLMs.txt Works
An LLMs.txt file is a structured text file placed at the root of
your website (e.g., yoursite.com/llms.txt). It contains:
- - Business identity: What your company does and who it serves
- - Products and services: Detailed, structured descriptions of what you offer
- - Links: Direct URLs to product pages, services, contact info
- - Context: Pricing, availability, location, specialties
AI assistants from OpenAI, Anthropic, Google, and others actively look for these files when building their knowledge about businesses. The standard is described at llms-txt.org.
Who Supports LLMs.txt?
The major AI providers are all working to improve how their assistants discover and recommend businesses. LLMs.txt provides a standardized way for them to do this:
ChatGPT (OpenAI)
Claude (Anthropic)
Gemini (Google)
Mistral
DeepSeek
SEO vs LLMs.txt
LLMs.txt does not replace SEO. They solve different problems:
| SEO (robots.txt, sitemaps) | AI Discovery (LLMs.txt) | |
|---|---|---|
| For | Google, Bing search results | ChatGPT, Claude, Gemini recommendations |
| Format | HTML pages with meta tags | Structured text file |
| Adoption | Every business does it | Less than 1% of businesses |
| Status | Essential, established | Emerging, massive first-mover advantage |
Can I Create an LLMs.txt File Myself?
Yes, you can create one manually. The format is documented at llms-txt.org. However, for most businesses -- especially e-commerce stores with hundreds of products -- manually creating and maintaining this file is time-consuming and error-prone.
You need to keep it updated as your products, prices, and inventory change. If the file goes stale, AI assistants will give outdated recommendations about your business.
Don't Want to Build This Yourself?
Cartutils generates and maintains your LLMs.txt automatically. Paste your URL and your business becomes AI-discoverable in under 5 minutes. Auto-refreshes monthly so it never goes stale.
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