llms.txt: what it is, how it works and how to implement it in WordPress.

In recent months, many people noticed that artificial intelligence tools such as ChatGPT, Claude or even Google services are accessing their websites. This has generated a big question: how can we control what these language models see and use of our content?

This is where the llms.txt. This new file allows you to guide language models on what content on your website they should prioritize. If you want to get more visibility into AI-generated responses, protect your content or simply take control of how machines interpret it, this article is for you.

Below, we explain in detail what is llms.txt, how to create it, implement it in WordPress y how to use it together with robots.txt for a complete strategy.

What is llms.txt

The file llms.txt (with double “l”) is an emerging standard that allows website owners to guide language models such as ChatGPT, Claude, Perplexity or Google Gemini on what site content should be referenced.

It is considered to be a key tool in the new approach called Generative Engine Optimization (GEO), which seeks to optimize content for generative response engines rather than traditional search engines.

Key features of llms.txt

📍 It is placed in the root of the site (example.com/llms.txt).

📄 It is written in Markdown format.

🔗 Includes recommended links (sitemap, key pages, guides, featured articles).

🧠 It is designed to help AIs understand what content is trustworthy and useful.

🎯 It does not block or force: it only suggests and orients the models.

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Difference between llms.txt and robots.txt

Both files are related to the behavior of the bots, but serve different functions:

llms.txtsuggests to the language models which contents they should consult or cite.

robots.txttells the bots which pages can or cannot be indexed.

While robots.txt establishes limits, llms.txt is an invitation: “If you're going to use my content, start here”.

Why you should use an llms.txt file

Here are some reasons why you might be interested in implementing llms.txt on your WordPress site:

✅ Increase the visibility of your content in AI-generated responses.

✅ Improves the likelihood of being cited as a reliable source.

✅ Offers greater control over your site's narrative in the face of generative models.

✅ It is a competitive advantage in a context where AI is growing every day.

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How to create llms txt in WordPress

Method 1: with the All in One SEO plugin (AIOSEO)

1. Install and activate the plugin All in One SEO.
2. Go to All in One SEO > General Settings > Advanced.
3. Activate the option "Generate LLMs.txt file".
4. Click on "Open LLMs.txt" to view the generated content.
5. The file will automatically include useful links such as your sitemap and home pages.

🆓 This feature is available even in the free version of the plugin.

Method 2: create llms.txt manually

If you prefer to do it yourself without plugins, follow these steps:

Step 1: create a text file

• Open an editor such as Notepad (Windows) or TextEdit (Mac).
• Save the file as llms.txt.

Step 2: add links to your key content

Example:

markdownCopyEdit# My amazing site

## Sitemap
- [XML site map](https://tusitio.com/sitemap.xml)

## Important Pages
- About us](https://tusitio.com/sobre-nosotros/)
- [Contact us](https://tusitio.com/contacto/)

## Recommended Articles
- Definitive Guide](https://tusitio.com/guia-definitiva/)
- Featured Article](https://tusitio.com/articulo-clave/)

Step 3: upload the file to your hosting

Use FTP or the file manager of your hosting to place llms.txt in the root folder (usually public_html).

Step 4: verify

Visit tusitio.com/llms.txt to check that it is accessible.

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How to block AI bots with robots.txt

If you would prefer to prevent certain AIs from using your content, you can block them from the robots.txt.

Example for blocking the OpenAI bot:

makefileCopyEditUser-agent: GPTBot
Disallow: /

Other common bots you could block:

• GPTBot (OpenAI)
• Google-Extended (Google)
• anthropic-ai (Claude)
• CCBot (Common Crawl)

You can edit robots.txt from AIOSEO (secure and recommended) or manually via FTP.

Benefits of combining llms.txt and robots.txt

A smart strategy is to use both files:

🟢 llms.txt to guide friendly AIs to your best content.

🔴 robots.txt to block unwanted bots.

In this way, you control who accesses and how much of your content is used.

Conclusions about llms.txt and its impact on your digital strategy

The future of content no longer depends on Google alone, but also on how artificial intelligence models interpret it. By implementing llms.txt, you are taking a proactive step to drive that interaction.

Although it is still an evolving standard, anticipating it will give you an advantage over competitors who do not yet apply it.

Whether you want to increase your visibility in IA or protect your work, llms.txt allows you to make informed decisions.

Frequently Asked Questions

Si quieres conocer otros artículos parecidos a llms.txt: qué es, cómo funciona y cómo implementarlo en WordPress puedes visitar la categoría Ayuda y Soporte.