The Chinese open weights models are copies of the American closed ones. Nobody in the US is trying to do that, I guess.

Europe is actually catching up right now. Not at the frontier like kimi and qwen 3.6 (yet) but it's just a matter of time until the European A3B models catch up, too.

Apertus and Soofi, both open source (not only open weight) models:

[1] https://apertus.ai/en/apps/apertus-model/

[2] https://www.soofi.info/