TL;DR
Key Definition
Like robots.txt guides search engines, llms.txt guides AI. It provides a structured summary of your site, key pages, and important information to facilitate LLM indexing.
Importance
Why Does It Matter?
- Helps AI quickly understand your business and offerings
- Points to your most important content to improve citation accuracy
- Measurably improves the accuracy of AI responses about you
- In 2026, llms.txt has become a recognized standard recommended by the GEO community
- Easy to implement in minutes with significant visibility impact
- Also recommended at /.well-known/llms.txt for automatic discovery
How Does It Work?
The llms.txt file provides AI models with a structured entry point to understand your site.
File Structure
The file contains a description of your business, a list of your key pages with their descriptions, and important metadata.
Location
Place the file at your domain root, such as yoursite.com/llms.txt. It must be publicly accessible.
Updates
Update the file when you add new important pages or significantly modify your offering.
Metrics
How Do You Measure It?
- Verify file accessibility (200 OK)
- Test AI understanding before/after implementation
- Track AI visibility improvements
- Analyze changes in citations
Pitfalls
What Are the Common Mistakes?
- Forgetting to update the file after major changes
- Including too many non-essential pages
- Descriptions too vague or marketing-focused
- Not verifying file accessibility
- Ignoring multilingual versions
What Should You Do First?
Follow these steps to get started.
- List your 10-20 most important pages
- Write a clear description of your business
- Create concise descriptions for each page
- Generate the file with a tool or manually
- Upload to your site root
- Verify accessibility via yoursite.com/llms.txt
- Test AI understanding with a few queries
- Plan quarterly updates
Examples
Basic Structure
# My Company > Short description of our main activity ## Key Pages - /products: Our solutions catalog - /pricing: Our rates and plans
With Metadata
Add information like your industry, main competitors, and key differentiators to help AI better position you.