# llms.txt in 2026: From Experiment to Standard

> How llms.txt evolved from Jeremy Howard's idea to 10% adoption among 300K domains. What changed and what's next.

Page: https://llms-full-txt.ru/en/blog/llms-txt-2026/
Site index: https://llms-full-txt.ru/en/llms.txt

Published: 2026-03-01

> **Update, October 3, 2026.** This post is kept as published on March 1. The picture has since become clearer: llms.txt remains a proposal by a single author, not a standard; v2 was published on August 10, 2026; there is no data showing the file affects search or citations, and the 10% share comes from one study that other measurements do not confirm. Current facts: [Status of llms.txt](https://llms-full-txt.ru/en/guides/standard-status/) and [Changes in v2](https://llms-full-txt.ru/en/specification/changes/).

## From Idea to Adoption

In September 2024, Jeremy Howard (Answer.AI / fast.ai) proposed a simple idea: a markdown file at the site root describing content structure for language models. The idea resonated.

By March 2026, llms.txt is used by Anthropic, Cloudflare, Stripe, Vercel, and thousands of other sites. Adoption exceeded 10% among 300,000 analyzed domains.

## Key Milestones

- **September 2024** — first specification published
- **December 2024** — 500+ sites with llms.txt
- **March 2025** — generators available for all popular CMS
- **2026** — 10%+ adoption, integration with IDEs and AI assistants

## What's Next?

Three development directions: formal standardization, MCP integration, and specialized extensions for different content types.