Does llms.txt help SEO or AI visibility?

By the Pickgap team · Updated Oct 15, 2026 · 1 min read

Probably not much, today. llms.txt is a proposed file that gives AI systems a plain-text summary of a site and its key pages. None of the major AI search providers has said it uses llms.txt to decide what to cite or recommend, and Google has said its search systems don't use it. It's harmless and quick to add, but it's not a priority for a local business.

What llms.txt is

llms.txt is a proposal from 2024 for a Markdown file at the root of a website (yoursite.com/llms.txt) that summarizes the site and lists its most useful pages, written for language models rather than people. The idea is to help AI tools find the important content without crawling everything.

Who uses it

Some developer tools and documentation sites use llms.txt so coding assistants can read their docs. For search and recommendations, there's no public evidence that ChatGPT, Gemini, Perplexity or Google's AI Overviews read it when choosing what to cite. Google has said its search systems don't use it.

Should a local business add one?

It does no harm, and it takes minutes if your site platform allows custom files. But for a local business, almost everything else on the checklist matters more:

1. Your Google Business Profile.
2. Reviews.
3. Listings on the directories AI cites.
4. A homepage that states what you do, where, when and for how much.
5. Letting AI search crawlers in. See robots.txt for AI crawlers.

If you add one, keep it short and accurate: what the business is, where it operates, and links to the main service, location and contact pages. (Pickgap publishes one at pickgap.com/llms.txt, mostly because our audience includes people who check.)

Be skeptical of "llms.txt optimization" services

Anyone charging significant money to write an llms.txt file, or promising it will get you recommended, is overselling it.