LLMs.txt vs. Robots.txt: What is the Difference?

Many developers ask: "If I already have a robots.txt file, why do I need an llms.txt file?" In this guide, we break down the distinct technical differences and why they should be used together.

Robots.txt: Access Restrictions

The robots.txt file is a rigid system configuration file used to allow or forbid crawler bots from accessing specific directories. It is a security/performance check saying "do not enter here."

LLMs.txt: Context Roadmaps

The llms.txt file is a markdown document designed to assist AI models. Instead of blocking access, it acts as a table of contents to actively guide bots to high-value pages, summarizing what the site represents and where the best documentation lives.