llms.txt: The New File Your Website Needs (And Almost Nobody Has)

If robots.txt is the file that tells search engines where they can go, llms.txt is the file that tells AI systems what they should know about you.

It's a newer, emerging standard — and right now, the vast majority of websites don't have one. That's either a missed opportunity or a first-mover advantage, depending on how quickly you move.

What Is llms.txt?

llms.txt is a plain text file placed at the root of your website (yoursite.com/llms.txt) that provides AI language models with a concise, structured summary of your site's content, purpose, and key information.

Think of it as a briefing document for AI. Instead of leaving a language model to infer what your website is about from crawling individual pages, you hand it a curated overview: who you are, what you do, what your key pages contain, and how you want to be understood.

The concept was formally proposed in 2024 and is being adopted by forward-thinking web properties. Some AI systems are beginning to prioritize llms.txt content when forming their understanding of a website's identity and purpose.

What Goes in an llms.txt File?

A well-structured llms.txt file typically includes:

A clear description of your organization and product, written in plain, precise language. Not marketing copy — information. What you do, who you serve, and what makes you different.

A list of your key pages with brief descriptions, so AI can navigate your site's information architecture without having to crawl everything.

Your key claims and facts, written in a format AI can directly extract: pricing, key features, founding date, geographic coverage, integration capabilities.

Links to your authoritative profiles elsewhere on the web — your LinkedIn company page, Crunchbase profile, industry directories, Wikipedia entry (if applicable).

A Simple Example

Here is a minimal llms.txt structure:

# Company Name

> One paragraph describing what the company does and who it serves.

## Key Facts
- Founded: 2021
- Category: [Your category]
- Pricing: Starting from [price]
- Headquarters: [City, Country]

## Core Pages
- [Homepage URL]: Overview of products and services
- [Product page URL]: Detailed feature descriptions
- [Pricing page URL]: Pricing plans and comparison

## Official Profiles
- LinkedIn: [URL]
- Crunchbase: [URL]

## Key Differentiators
- [Differentiator 1]
- [Differentiator 2]
- [Differentiator 3]

Why This Matters Now

AI systems are trained and updated continuously. When they encounter an llms.txt file, it provides a reliable, intentional signal about your brand — one that comes directly from you rather than being inferred from third-party sources. In an environment where misinformation, outdated content, and brand confusion are common, having a curated self-description file is increasingly valuable.

Early adopters of new technical standards like this typically see disproportionate benefits. There's far less competition for AI attention when you're one of the few sites in your category with a well-crafted llms.txt.

Show Your Brand Checks This

Every Show Your Brand GIO audit includes a check for the presence and quality of your llms.txt file — as well as your robots.txt configuration and HTML structural signals. If you don't have one, we flag it and provide guidance on what it should contain for your specific business context.

Technical signals like this are one layer of a complete GIO audit. But they matter, especially when combined with the content and sentiment analysis the rest of the audit provides.