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Developer
Use Guide

The Developer Use Guide is a resource for developers that provides best practices and considerations for building products powered by large language models (LLM) in a responsible manner, covering various stages of development from fine tuning to deployment.
Developer use guide resources
dev use guide

What's new

We’re excited to develop and release the latest Llama 4 models, the next generation of Llama with new capabilities including advanced model reasoning and agentic capabilities. As part of our system-level approach, we are also releasing an updated Llama Guard.
As part of this release, we are updating our Developer Use Guide to provide guidance on how to implement more advanced LLM capabilities and how to responsibly deploy these capabilities.
Detailed overview
A detailed overview of Llama 4 models.
System safety
Additional system-level safety alignment and best practices.
Responsible agents
Responsibility considerations for building Agents and using model reasoning.

Release resources

For the safe deployment of our Llama models, Meta recommends following the Developer Use Guide and using the resource guide below which provides resources to facilitate the implementation of best practices, mapped to each stage of LLM product development.
Developer use guide resources

Explore more

Developer use guide
Getting started

Implementing the Developer Use Guide

For the safe deployment of our Llama models, Meta recommends following the Developer Use Guide and using the guide...
Learn more
Developer use guide
Open approach

Our investment in open trust and safety

With Llama Guard we are furthering our commitment to an open approach to build generative AI with trust and safety in mi..
Learn more
Developer use guide
Research

Llama 3 Research Paper

For the Llama 3 launch, we are providing the research community with detailed insight into our safety testing approach a...
Learn more