What is LLMs.txt?

Definition

LLMs.txt is a text file hosted at the root of a website (e.g., yoursite.com/llms.txt) that provides AI systems with structured information about a brand, its products, and its positioning. Think of it as robots.txt for AI understanding — while robots.txt tells crawlers what they can access, llms.txt tells AI systems what your brand actually is.

Why llms.txt matters

AI systems like ChatGPT, Claude, and Perplexity synthesize information from many sources. An llms.txt file gives them a single, authoritative source of truth about your brand — directly from you. This helps ensure AI platforms describe your products accurately and position you correctly in their responses.

Without an llms.txt file, AI systems rely entirely on third-party content, which may be outdated, incomplete, or inaccurate.

What goes in an llms.txt file

A typical llms.txt file includes:

• Brand name and description — What your company does
• Products and services — Key offerings with descriptions
• Target audience — Who your products are for
• Key differentiators — What makes you unique
• Pricing overview — General pricing structure
• Contact and links — Where to find more information

Example

# Brand: Acme Analytics
# Description: Real-time analytics platform for SaaS companies

## Products
- Dashboard Pro: Real-time metrics dashboard for product teams
- Funnel Tracker: Conversion funnel analysis with cohort breakdowns
- Revenue Monitor: MRR, churn, and LTV tracking

## Target Audience
SaaS companies with 10-500 employees

## Differentiators
- Real-time data (no batch processing delay)
- One-click integration with 50+ tools
- SOC 2 Type II certified

Related concepts

• llms-ctx.txt — An extended version providing deeper context including use cases, competitive positioning, and FAQ content
• robots.txt — Controls crawler access permissions (complementary to llms.txt)
• JSON-LD schema markup — Structured data embedded in HTML that helps AI understand page content

Tools

• LLMs.txt Generator — Free tool to generate an llms.txt file for your website
• LLMs-ctx Generator — Generate an extended context file for deeper AI understanding