openai/harmony
OfficialRenderer for the harmony response format to be used with gpt-oss
4,316 stars265 forksRustUpdated April 2026
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Frequently Asked Questions
What is harmony?
Renderer for the harmony response format to be used with gpt-oss
How do I install harmony?
Visit the GitHub repository at https://github.com/openai/harmony for installation instructions.
What license does harmony use?
harmony uses the Apache-2.0 license.
What are alternatives to harmony?
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Open source & community-verified
Apache-2.0 licensed — free to use in any project, no strings attached. 4,316 developers have starred this, meaning the community has reviewed and trusted it.
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