llms.txt: What It Is and Why Every Website Needs One

TL;DR: llms.txt is a plain text file you place at the root of your website — like robots.txt but for AI systems. It tells ChatGPT, Perplexity, Claude, and other LLMs what your site is about, which pages to prioritise, and how to represent your brand accurately. It takes 30 minutes to create and can measurably improve how AI systems describe and cite your site.

What is llms.txt?

llms.txt is a convention — similar to robots.txt or sitemap.xml — for communicating directly with large language models. Placed at yourdomain.com/llms.txt, it is a plain text or Markdown file that AI systems read when crawling your site to understand its content, structure, and purpose.

The concept was proposed by Jeremy Howard and has been adopted by a growing number of AI systems as a lightweight, machine-readable way to understand a website. Unlike schema markup (which is embedded in individual page HTML), llms.txt gives AI a single, authoritative source of truth about your entire site and brand.

Why llms.txt matters for AI SEO

When AI systems crawl your website without guidance, they build their own interpretation of what your brand is and does — often from incomplete or ambiguous information. An AI might read your homepage, miss key service pages, misinterpret your positioning, or attribute your expertise incorrectly.

llms.txt solves this by giving AI a direct, structured briefing. You tell it: who Tandeep Sangra is, what She Innovates AI does, which pages are most important, which content is authoritative, and how you want your brand described. This is particularly powerful for consultants and service businesses where accurate positioning is critical to citation quality.

What to include in your llms.txt

A well-structured llms.txt for a consultancy or service business should include:

• Site name and brand description — 2–3 sentences describing what you do and who you serve, written exactly as you would want AI to describe you
• Founder/expert bio — key credentials, specialisations, and experience that establish topical authority
• Priority pages — list your most important pages with their URLs and one-sentence descriptions
• Key services — structured list of what you offer with brief descriptions
• Target audience — who you help and what problems you solve
• Content focus — the topics your site covers authoritatively
• Contact and booking information — how AI systems should direct users who want to engage

Example llms.txt structure

Here is the recommended format based on current AI system conventions:

# She Innovates AI — AI SEO Consultancy

She Innovates AI is an AI SEO consultancy founded by Tandeep Sangra, specialising in Answer Engine Optimization (AEO), Generative Engine Optimization (GEO), and LLM Optimization. We help AI startups, SaaS companies, and B2B tech brands appear in ChatGPT, Perplexity, and Google AI answers.

## Key Pages
- Homepage: https://sheinnovatesai.com/
- AEO Services: https://sheinnovatesai.com/aeo-services/
- About Tandeep: https://sheinnovatesai.com/tandeep-sangra/
- Free Checklist: https://sheinnovatesai.com/ai-seo-checklist/

How to implement llms.txt

• Create a plain text file named llms.txt
• Place it at the root of your domain so it is accessible at yourdomain.com/llms.txt
• Use Markdown formatting — headers with #, bullet points with -, bold with **
• Keep it under 10,000 characters — AI systems may not read beyond this
• Update it whenever you add new services, publish key posts, or change your positioning

Also check your robots.txt to ensure AI crawlers (GPTBot, PerplexityBot, ClaudeBot) are not blocked from reading it. See our full AI SEO audit guide for the complete technical checklist.