[codelion]

It is by design. OpenAI is not going to reveal any architectural innovation they have made in their own commercial models.

[diggan]

Maybe not a architectural innovation, but both the Harmony format and splitting things into system/developer/user messages instead of just system/user messages, are both novel (in the released weights world) and different enough that I'm still in the process of updating my libraries so I can run fair benchmarks...