What Is llms.txt and Does Your Business Need One?
llms.txt is a plain text file placed at the root of your website (yoursite.com/llms.txt) that provides AI engines with a structured summary of your business. Think of it as a robots.txt for AI: robots.txt tells Google’s crawler how to crawl your site, and llms.txt tells language models what your business is, what you do, and what content matters most. It is a new concept and not yet an official standard, but early adopters are using it to give AI engines a direct signal about their entity identity.
How llms.txt Works
When an AI engine crawls your site, it reads hundreds of pages and tries to synthesize what your business does. That synthesis can be inaccurate, incomplete, or focused on the wrong content. llms.txt gives the AI a shortcut: a single file that says “here is who we are, here is what we do, here is where we are, and here are our most important pages.”
The file is plain text with no special formatting requirements. It typically includes your business name, a brief description, your location, your core services, your key differentiators, and links to your most important pages.
AI engines are not required to read llms.txt. There is no guarantee that ChatGPT or Perplexity will use it. But providing a clean, structured summary of your business in a predictable location (the root directory) gives AI one more signal to work with. In a competition where every signal counts, it is a low-effort addition with potential upside.
What to Include in Your llms.txt
Keep it concise. The goal is clarity, not volume. A typical llms.txt for a local business includes:
Business name and what you do in one sentence. Location (city and state). Core services listed plainly. Key differentiators or proof points. Links to your most important pages (homepage, top service pages, about page). Contact information.
Example structure:
Name: iORSO
Description: AI, SEO, AEO, and GEO agency based in Cumming, GA, serving 25 cities across the Atlanta metro area.
Services: SEO and AEO, AI implementation and automation, web design
Differentiator: Proprietary Bridge platform with 83 AI-powered tools. BrainX methodology for custom AI systems.
Key pages: iorso.com, iorso.com/seo-aeo-services/, iorso.com/ai-automation/, iorso.com/aeo-readiness-audit/
Contact: (678) 640-3933, info@iorso.com
How llms.txt Relates to Schema and AEO
llms.txt is one layer in a multi-layer approach to AI visibility.
Schema markup is embedded in your page code and tells AI how to categorize specific pages (this is a service page, this is a FAQ, this is a local business). AEO content structuring (front-loaded answers, FAQ blocks, specific language) makes your actual content extractable and citable. llms.txt provides a site-level summary that gives AI the big picture before it reads individual pages.
None of these replace each other. Schema works at the page level. AEO works at the content level. llms.txt works at the site level. Together, they create a consistent entity signal that AI engines can use to understand and cite your business. For a full breakdown, read our guide on what AEO is.
Does Your Business Need One?
If you are already investing in SEO and AEO, adding a llms.txt file takes 15 minutes and costs nothing. The downside risk is zero. The upside is that AI engines have one more structured signal confirming your entity identity.
If you have not started any AEO work yet, llms.txt alone will not make you visible to AI. It is a supporting signal, not a substitute for content quality, schema, and the rest of the AEO stack.
Priority order: fix your content structure first, deploy schema second, add llms.txt third. It is a finishing touch, not a foundation.
iORSO deploys llms.txt as part of our SEO/AEO services engagement. It is included in the standard implementation, not an extra charge.
Frequently Asked Questions
Is llms.txt an official standard?
No. It is an emerging concept without formal standardization. There is no RFC or W3C specification. It is a best-practice approach being adopted by forward-thinking businesses and SEO practitioners.
Will ChatGPT definitely read my llms.txt?
There is no guarantee. AI engines are not required to read or use the file. But providing structured business information in a predictable location increases the chances that AI includes accurate information about your business.
How long should llms.txt be?
Short. 10 to 20 lines covering your business name, description, services, location, key pages, and contact information. This is a summary, not a brochure.
Where do I put the file?
At the root of your website: yoursite.com/llms.txt. Same location concept as robots.txt or sitemap.xml.
Can I create llms.txt myself?
Yes. It is a plain text file. Any text editor works. If you are on WordPress, you can create it as a static file in your root directory or use a plugin.
Next Steps
Phone: (678) 640-3933 | Email: info@iorso.com