OpenAI's Harmony Response Format for gpt-oss Models
By
meetpateltech
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Summary
The article introduces OpenAI's Harmony response format, designed for use with the gpt-oss open-weight model series. It explains the format's purpose in structuring conversations, generating reasoning output, and handling function calls. The guide is aimed at developers building their own inference solutions, while noting that API users or providers like Ollama need not worry about the format.
Key quotes
· 3 pulledThe gpt-oss models were trained on the harmony response format for defining conversation structures, generating reasoning output and structuring function calls.
If you are not using gpt-oss directly but through an API or a provider like Ollama, you will not have to be concerned about this as your inference solution will handle the formatting.
The format is designed to mimic the harmony response format for defining conversation structures.
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