Model techniques map
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OpenAI Harmony response format

source
1
model
1
lab adopt it
1
strongest
core

How sources treat it

One count per evidence span, weakest treatment to strongest.

core 1

Documented in

Evidence

1 span quoted from the sources, strongest treatment first.

openai/harmony is a brand new open source project from OpenAI (again, Apache 2) which implements a new response format that was created for the gpt-oss models.

coresoftware implementationin openai/harmonyOpenAI