What is an llms.txt file?

An llms.txt file is a markdown-formatted file placed at the root of your website (e.g., yourdomain.com/llms.txt) that provides AI language models with a structured, easy-to-parse summary of your site's content, brand, and key pages — similar to how a sitemap helps search engine crawlers.

Why do I need an llms.txt file?

AI models like ChatGPT, Claude, and Perplexity have limited context windows and struggle to parse complex HTML. An llms.txt file provides the key information about your site in a format AI can natively consume, improving how your brand is represented in AI-generated responses and generative search results.

How is llms.txt different from robots.txt?

robots.txt tells crawlers which pages to avoid indexing. llms.txt is the opposite: it's a positive signal that tells AI models exactly what you want them to know about your site. It's not about blocking — it's about clarity and AI visibility.

Where do I put the llms.txt file on my site?

Place the file at the root of your domain: https://yourdomain.com/llms.txt. AI tools that support the standard will automatically find and use this file when crawling your site.

What's the difference between llms.txt and llms-full.txt?

llms.txt is a concise index with links and short descriptions — ideal for AI models with limited context. llms-full.txt is an extended version containing the full content of each page inline. Our generator creates the standard llms.txt, which is the most widely supported format.

Is this generator free?

Yes, completely free. No credit card required, no account needed. Just paste your URL and download your llms.txt file.

How accurate is the auto-generated content?

Our generator extracts real metadata from your live site — page titles, meta descriptions, OG tags, and body text. The output is generally accurate, but we recommend reviewing and editing the file before deploying, especially for the brand description and page summaries.

Can I edit the file before downloading?

Yes. After generation, the file is fully editable in your browser. You can refine any section, update descriptions, remove pages, or add custom content before downloading.

What's the difference between SEO and AEO (AI Engine Optimization)?

Traditional SEO optimizes your site for search engine algorithms. AEO (AI Engine Optimization) is about making your brand and content visible and accurate in AI-generated responses. As more users turn to ChatGPT, Perplexity, and Claude for answers, AEO ensures your brand appears correctly. Sona's Agent Analytics platform helps you monitor and improve your AI visibility continuously.

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llms.txt & AI SEO guides

Everything you need to make your site visible to AI assistants — then generate your llms.txt file free.

2026-06-06 · 6 min read

What Is llms.txt? The Complete Guide for 2026

A plain-English guide to the llms.txt standard: what the file is, how the format works, why AI models use it, and how to create one for your site in seconds.

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2026-06-06 · 5 min read

llms.txt vs robots.txt: Key Differences Explained

robots.txt blocks crawlers; llms.txt guides AI models. Here's how the two files differ, why you need both, and how they work together for AI SEO.

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2026-06-06 · 7 min read

How to Improve Your Brand's Visibility in ChatGPT, Claude & Perplexity

A practical AEO/GEO playbook: the steps that make AI assistants describe your brand accurately and cite your pages — starting with an llms.txt file.

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