Because they want to optimize it for their models and don't want to be blocked by waiting for PRs to merge or be rejected.

There's plenty of reasons to start your own fork that you have full agency of, as long as the OSS License is maintained anyone will be able to benefit from any new features they want to make use of.

Opencode sits on a ton of important PR's, so they didn't want to wait. Everybody else switched to omp (oh my pi) already.

To go a different path perhaps? You can't expect that all your ideas will land into a main repo and you really want to implement your vision while using a sane base.

OpenCode can merge in all their changes if they want.

have you ever tried contributing a large number of changes to OSS?

Could just be a courtesy - Americans tend to be rather suspicious and hostile to contributions coming from China, and it might draw unwarranted attention from agencies and bad media.

Why not?

> Why not just contribute to OpenCode instead of creating a clone :/

It's controlled by a different organization; in particular a startup in a "competing" space.

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