**Probably not—if you mean for your website’s SEO or visibility in AI search.**

`llms.txt` is an optional Markdown file that gives AI tools a brief guide to your site and links to useful content. It’s a community proposal, rather than a universal requirement. It can be useful for software documentation or when an AI tool specifically uses it. [About the proposal](https://llmstxt.org/).

For Google’s AI Overviews and AI Mode, Google explicitly says you **don’t need special AI text files**. Prioritize helpful content, pages that search engines can crawl, clear internal links, and accurate business information. [Google’s guidance](https://developers.google.com/search/docs/appearance/ai-features).

My recommendation: **skip it unless you have a specific use for it or your platform generates and maintains it automatically.** It also doesn’t replace `robots.txt` or control whether AI companies may train on your content.

### SOURCES:

https://llmstxt.org/
https://developers.google.com/search/docs/appearance/ai-features