It's nice they're using some of the money from their commercial and proprietary models, to improve the state of the art for open source (open weights) models.
How did they weaken their commitment to open weights?
Well, yeah, it's very welcome, but 'history of humanity' is hyperbole given ChatGPT isn't even two years old.
> How did they weaken their commitment to open weights?
Before https://web.archive.org/web/20240225001133/https://mistral.a... versus after https://web.archive.org/web/20240227025408/https://mistral.a... the Microsoft partnership announcement:
> Committing to open models.
to
> That is why we started our journey by releasing the world’s most capable open-weights models
There were similar changes on their about the Company page.