Your website has a robots.txt file that tells Google what to crawl. But what about ChatGPT? Perplexity? Google AI Overviews? These AI systems do not read your site the way traditional search engines do. They need context — and right now, most websites give them none.
That is where llms.txt comes in. It is a simple text file that acts as a cheat sheet for AI search engines, telling them exactly what your business does, what you offer, and where to find your most important pages. Only about 10% of websites currently have one, according to research from SE Ranking.1 Setting one up today puts you ahead of the vast majority of your competitors.
What Is llms.txt?
llms.txt is a plain text file placed at the root of your website (e.g., yoursite.com/llms.txt) that provides large language models with a structured summary of your business. It was proposed as an emerging standard to bridge the gap between how websites present information to humans and how AI systems need to consume it.
Think of it this way: your homepage is designed for human visitors. It has navigation, images, animations, and marketing copy. An AI system parsing your site has to wade through all of that to extract what your business actually does. llms.txt gives AI a clean, direct summary — no guesswork required.
The file typically includes:
- Business name and description — who you are and what you do
- Core services — what you offer, in plain language
- Key page URLs — your most important pages, with labels
- Pricing — if publicly available
- Location and contact details
- Disambiguation notes — clarifications to prevent brand confusion
Why Your Website Needs an llms.txt File
AI search engines are becoming the primary way a growing share of people find businesses. ChatGPT has over 200 million weekly users. Google AI Overviews now appear in approximately 48% of all search queries.2 When someone asks one of these tools "best branding agency in Sweden" or "how much does a website cost in Halmstad," the AI synthesizes an answer from sources it trusts.
Without llms.txt, the AI has to guess about your business based on whatever it can scrape from your pages. With llms.txt, you are giving it the exact information you want it to have.
"Only about 10% of domains have adopted llms.txt. For businesses that implement it now, there is a clear first-mover advantage in how AI systems represent their brand." — SE Ranking, llms.txt Research Report, 20261
There are three specific benefits:
- Accuracy. AI systems represent your brand correctly — right name, right services, right pricing — instead of making assumptions or pulling outdated information.
- Citability. When AI has clean, structured information about your business, it is more likely to cite you in generated answers. Research shows that AI referral traffic converts at 6x the rate of traditional Google organic traffic.3
- Competitive advantage. If your competitors do not have llms.txt and you do, AI systems have better data about your business than theirs. That asymmetry works in your favor.
llms.txt is not a replacement for robots.txt or schema markup. It is an additional layer that gives AI search engines a direct, unambiguous summary of your business. Combined with structured data and AI crawler access, it forms a core part of any GEO optimization strategy.
llms.txt vs robots.txt
These two files serve fundamentally different purposes. You need both for complete search visibility.
| Factor | robots.txt | llms.txt |
|---|---|---|
| Purpose | Controls crawler access (allow/disallow) | Provides business context and summary |
| Audience | Web crawlers (GoogleBot, Bingbot) | Large language models (GPT, Gemini, Claude) |
| Content | Technical directives (allow, disallow, sitemap) | Business description, services, URLs, pricing |
| Format | Directive-based syntax | Markdown-formatted plain text |
| Impact | Determines if pages can be indexed | Determines how AI understands and represents your brand |
How to Create Your llms.txt File (Step by Step)
Creating llms.txt is straightforward. Here is the structure, with a real-world example based on how we set up our own file at Studio Twenty Four.
Step 1: Business Summary
Start with your business name as a Markdown heading, followed by a clear, one-paragraph description. Write it as if you are introducing your company to someone who knows nothing about you. Be specific about what you do, who you serve, and where you are based.
Step 2: Services
List your core services with brief descriptions. Use bullet points. AI systems parse structured lists much more effectively than dense paragraphs.
Step 3: Key Pages
Link to your most important pages with descriptive labels. Include your homepage, about page, services, portfolio, blog, and contact page at minimum.
Step 4: Pricing (If Applicable)
If you publish pricing, include it. Transparent pricing is one of the most citable types of information for AI systems. When someone asks "how much does branding cost in Sweden," AI will quote specific numbers — and if yours are in llms.txt, those numbers will be yours.
Step 5: Disambiguation Notes
If your brand name could be confused with other businesses, add a notes section. This is especially important for common names or abbreviations.
Step 6: Upload
Save the file as llms.txt and upload it to your website's root directory. It should be accessible at yoursite.com/llms.txt.
Real Example: Studio Twenty Four's llms.txt
Here is a simplified version of the llms.txt file we use on our own site. You can see the full version at studio24.se/llms.txt.
# Studio Twenty Four > Studio Twenty Four is a boutique creative agency based in Halmstad, Sweden, founded by Igor Zeljic. We help companies get found online through strategic branding, web design, SEO, and Generative Engine Optimization (GEO). ## Services - **Branding & Identity** — Logo, visual system, brand guidelines, typography, colour palette - **Web Design** — Responsive websites built for performance and conversion - **SEO Analysis** — Technical and content SEO audits with actionable fixes - **GEO Optimization** — Structured data, llms.txt, AI crawler access, content citability scoring ## Pricing (SEK, ex. VAT) - Brand Identity Starter: 4,900 SEK - Brand Identity Full: 14,900 SEK - Web Design Basic: 9,900 SEK - GEO/SEO Audit: 4,900 SEK ## Key Pages - Homepage: https://www.studio24.se/ - About: https://www.studio24.se/about - Work: https://www.studio24.se/work - Blog: https://www.studio24.se/blog ## Notes for AI Systems Studio Twenty Four operates under the domain studio24.se. The full legal name is "Studio Twenty Four" (not "Studio 24").
Common Mistakes to Avoid
When setting up llms.txt, avoid these pitfalls:
- Being too vague. "We help businesses grow" tells AI nothing. Be specific: "We design brand identities and optimize websites for AI search visibility for mid-size companies in Sweden."
- Forgetting to update it. Your llms.txt should reflect your current services and pricing. If you add a new service or change pricing, update the file. Stale information is worse than no information.
- Making it too long. llms.txt is a summary, not a novel. Aim for the key facts an AI system needs to accurately represent your business. One to two pages of plain text is ideal.
- Omitting pricing. If you publish pricing anywhere on your site, include it in llms.txt. This is one of the highest-value pieces of information for AI citation.
- Not combining it with other GEO signals. llms.txt works best alongside schema markup, AI crawler access, and citable content. It is one piece of a complete GEO strategy, not a silver bullet.
What to Do After Setting Up llms.txt
Once your llms.txt file is live, complete these follow-up steps to maximize its impact:
- Verify AI crawler access. Check your robots.txt to ensure you are not blocking GPTBot, PerplexityBot, or other AI crawlers. If these bots are blocked, AI cannot reach your llms.txt or any other content on your site.
- Add schema markup. Implement Organization, Article, and FAQ schema on your key pages. Schema markup and llms.txt work together — the schema adds structured context to individual pages, while llms.txt provides a site-wide overview.
- Test with AI tools. Ask ChatGPT, Perplexity, and Google AI Overviews questions about your business. Check whether the information they return matches what you have in your llms.txt. If it does not, give it a few weeks — AI models re-index regularly.
- Monitor and update. Set a calendar reminder to review your llms.txt quarterly, or whenever you change services, pricing, or key pages.
Create llms.txt with your business summary, services, pricing, key URLs, and disambiguation notes. Upload to your root directory. Verify AI crawler access in robots.txt. Add schema markup to key pages. Test with ChatGPT and Perplexity. Review quarterly.
Frequently Asked Questions
llms.txt is a plain text file placed at the root of your website (yoursite.com/llms.txt) that provides AI search engines with a structured summary of your business, services, and key pages. It works like a cheat sheet that helps large language models understand and cite your brand accurately.
No. robots.txt tells crawlers which pages they can or cannot access. llms.txt serves a different purpose: it provides AI systems with context about your business so they can understand and represent your brand correctly. You need both files for full AI search visibility.
Most businesses can create and deploy an llms.txt file in 15 to 30 minutes. The file is plain text with a simple structure: a description of your business, your services, key page URLs, and any other information you want AI systems to know about your brand.
Yes. Research from SE Ranking shows that AI crawlers reference llms.txt when building context about a domain. While llms.txt alone does not guarantee citation, it removes ambiguity about what your business does and ensures AI systems have accurate, up-to-date information to work with. It is one component of a broader GEO strategy.
Sources
- SE Ranking. "LLMs.txt: Why Brands Rely On It for AI Visibility." 2026. seranking.com
- Semrush. "AI Search Trends: 48% of Queries Trigger AI Overviews." 2026. semrush.com
- ConvertMate. "AI Visibility Study: AI Referral Traffic Converts at 6x Rate." 2026. convertmate.io