What is LLMs.txt and Will it Help Your AI Mentions?

23 Oct 2025 Ruben Rogers in Digital Marketing, SEO Concepts, Generative Engine Optimization (GEO)

Key Takeaways:

• LLMs.txt is a proposed new web standard that helps large language models find and understand your most valuable website content.
• Unlike robots.txt or sitemap.xml, the LLMs.txt file doesn’t control crawling or indexing.
• No major AI provider officially supports or uses LLMs.txt yet.
• Creating an LLMs.txt file is simple and low-risk.

How do you ensure AI systems find and cite your website and blog content?

With millions of people now turning to AI assistants like ChatGPT, Claude, and Perplexity for answers, the way your content and business is discovered is changing fast.

In fact, according to Menlo Ventures, more than 60% of American adults say they’ve used an AI tool to search for information in the past six months, and nearly one in five rely on it every day.

That’s where LLMs.txt comes in: a proposed new standard designed to help large language models locate and reference your most valuable content.

Think of it as a roadmap for AI crawlers, showing them which pages best represent your brand or expertise.

In this guide, we’ll break down what LLMs.txt is, how it works, and whether adding it to your site is actually worth your time, especially since major AI providers are still deciding whether to adopt it.

What is LLMs.txt?

LLMs.txt is a proposed standard that helps large language models (LLMs) access and interpret structured content from websites. Think of it as a roadmap that points AI systems toward your most important pages.

Read the full proposal here: llmstxt.org

The file itself is a simple Markdown document that lives at your website's root directory (like yoursite.com/llms.txt).

It uses H2 headers to organize links to key resources such as:

• High-value blog posts
• Product information
• API documentation
• Support articles
• Company policies

The idea behind LLMs.txt is straightforward: remove guesswork by giving AI models a clear map of your high-value content instead of letting them randomly crawl through your entire site and guess what your website is about.

What Makes LLMs.txt Different from Other Site Files?

It's specifically designed for AI comprehension and citation, not search engine indexing or access control.

Example of LLMs.txt File

A good example of an LLMs.txt file can be found on Hootsuite's root domain (www.hootsuite.com/llms.txt).

As you can see from the above screenshot, they've added all of their most important tools as well as some useful blog resources.

Hootsuite's LLMs.txt file consists of the following:

• Headings with their most important tools, blog posts, and information pages. (e.g. Social Media Advertising Tool, AI Content Ideas Generator, Social Media Trends 2025)
• Links to matching pages on their domain. (e.g. http://www.hootsuite.com//social-media-tools/content-ideas-generator)
• Description of the page. (e.g. This page generates hashtags for social media posts across multiple networks using Hootsuite’s AI-powered hashtag generator.)

Why Could LLMs.txt Matter in the Future?

AI-powered search is reshaping how people discover content. Users ask AI assistants direct questions instead of browsing through search results. This means your content needs to be easily discoverable and digestible by AI systems.

LLMs.txt addresses a specific problem: AI models might struggle to find your best content during inference time.

When someone asks ChatGPT or Claude a question, these systems need to quickly identify relevant, authoritative sources. Without clear guidance, they might overlook your expertise.

Without llms.txt, LLMs will try to infer what matters on their own. They may skip over important content, pull outdated information, or confuse your brand with similar ones.

- Dushan Stankovic, Senior Development Lead at ArtVersion

The idea is that this markdown file gives you direct influence over what AI systems see when they evaluate your site. Instead of hoping they stumble across the right pages, you can explicitly highlight your most valuable resources.

However, as I mentioned in the intro, marketers and developers must still remember one thing: LLMs.txt is still only a proposal and is still in the theoretical stage.

No major AI provider (OpenAI, Anthropic, Google, etc.) has officially committed to using LLMs.txt files, making it more of a hopeful investment than a guaranteed strategy.

AFAIK none of the AI services have said they’re using LLMs.TXT (and you can tell when you look at your server logs that they don’t even check for it).

• John Mueller, Search Advocate at Google

Should You Create an LLMs.txt File?

The answer depends on your available resources. Creating an LLMs.txt file is relatively simple and low-cost, but its effectiveness remains unproven.

Potential benefits include:

• Early adoption advantage if AI providers eventually support the standard
• Better organization of your key content
• Possible improved AI citation rates (though unverified)

However, it's important to consider these limitations and not just jump onboard just because of AI-hype:

• No major LLM provider currently uses LLMs.txt
• Time investment with uncertain returns
• Ongoing maintenance requirements

If you have clear, high-value SEO content that would benefit from AI citation, creating a basic LLMs.txt file could be worthwhile as a low-risk experiment.

Just don't expect immediate results.

What is the Difference between Robots.txt and LLMs.txt?

These files serve completely different purposes, despite their similar sounding names.

Robots.txt:

1. Controls what crawlers can access
2. Blocks or allows indexing
3. Uses simple text commands
4. Universally supported by search engines
5. Focuses on access control

LLMs.txt:

1. Guides AI models to valuable content
2. Doesn't block anything
3. Uses Markdown formatting
4. No official support from AI providers
5. Focuses on content curation

What is the Difference between LLMs.txt and Sitemap.xml?

While both files help systems understand your website, they target different audiences and serve different functions.

Sitemap.xml:

1. Lists all pages for search engines to crawl
2. Focuses on comprehensive site coverage
3. Uses XML format
4. Helps with crawl prioritization
5. Targets search engine indexing

LLMs.txt:

1. Highlights only the best content for AI models
2. Focuses on curation over completeness
3. Uses Markdown format
4. Designed for inference-time guidance
5. Targets AI comprehension and citation

How to Create an LLMs.txt File

Creating an LLMs.txt file involves several straightforward steps:

1. Choose Your Content

Identify your most valuable pages that demonstrate expertise and provide clear, actionable information. Focus on:

• Comprehensive guides and tutorials
• Product documentation
• Company information and policies
• High-performing blog posts
• FAQ sections

2. Structure Your File

• Create a Markdown document with:
• One H1 heading naming your site or project
• A brief blockquote description
• H2 headings linking out to important pages you want to add

3. Use a Generator Tool

Several free tools like Firecrawl can help create your LLMs.txt file. These tools can automatically scan your site and suggest content.

4. Upload to Root Directory

Save the file as "llms.txt" and upload it to your website's root directory so it's accessible at yoursite.com/llms.txt.

Best Practices for Creating an LLMs.txt File

Follow these guidelines to maximize your LLMs.txt file's effectiveness:

Content Selection:

• Prioritize evergreen content over time-sensitive posts
• Include pages that showcase your expertise and authority
• Focus on content that directly answers common user questions
• Avoid including thin or low-quality pages

Organization:

• Group similar content under clear H2 headings
• Use descriptive link titles that explain the content's value
• Include brief descriptions to provide additional context

Maintenance:

• Review and update your file quarterly
• Remove outdated content and add new high-value pages
• Monitor which pages perform well and adjust accordingly
• Focus on quality over quantity

Do You Need LLMs.txt to Appear in AI Results?

No, you don't need LLMs.txt to appear in AI results. AI systems can already access and cite publicly available content through existing crawling methods.

However, LLMs.txt could potentially improve your chances of being cited in the future by:

• Making it easier for AI systems to find your best content
• Providing clear context about what each page contains

The key word is "potentially" since there's currently no evidence that LLMs.txt actually improves AI citation rates or visibility.

Frequently Asked Questions

Does LLMs.txt replace robots.txt?

No, LLMs.txt doesn't replace robots.txt. They serve different purposes with robots.txt controlling crawler access while LLMs.txt guides AI models to valuable content. You should maintain both files if you choose to implement LLMs.txt.

Will having LLMs.txt guarantee my site appears in ChatGPT summaries?

No guarantees exist. No major AI provider officially supports LLMs.txt, so creating one doesn't ensure improved visibility in AI responses. Consider it an experiment rather than a proven strategy.

What file format is LLMs.txt?

LLMs.txt uses Markdown format, making it human-readable while remaining machine-parseable. The file should be saved as plain text with a .txt extension.

How many links should I include?

Focus on quality over quantity. Include 10-30 of your most valuable pages rather than trying to list everything. Too many links could dilute the file's effectiveness and make it harder for AI systems to identify your truly important content.

Is LLMs.txt Actually Useful Right Now?

Probably not yet, but it might be worth trying anyway.

LLMs.txt remains a speculative proposal with no official adoption from major AI providers.

However, the investment required is minimal, and the potential upside exists if AI providers eventually adopt the standard. Early adopters could gain a competitive advantage once (or if) official support emerges.

Focus your main efforts on creating excellent content that serves your audience. Whether AI systems find it through LLMs.txt, traditional crawling, or future methods, quality content remains the foundation of long-term success.