It's the only non-Chinese open weights frontier model, so while not groundbreaking per se, still quite important.

Important for sovereignty, multi-language support, and choice.

You have a number of other European providers of open-weight LLMs, such as Bielik and Aleph Alpha. They are not trying to compete at the frontier, but they sometimes develop original architectures. I am also a big fan of PleIAs' research in this regard, have a look at their Baguettotron

Bielik largely exists because, and this is also my own experience, even frontier models still make grammar/spelling mistakes in Polish - even more so now than in the past.

There are many non-Chinese open weights models, just not very good ones.

That's why he has written "frontier"

my bad, I had missed that word.

Inkling!