>kimi has been particularly shameless in copying codex 1:1, wow.

Isn´t codex (edited) Apache 2.0 (thanks @Shank)

https://github.com/openai/codex ?

No, it's Apache 2. https://github.com/openai/codex/blob/main/LICENSE

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The CLI is open but the GUI is proprietary.

I guess the issue is they didn't give attribution?