At least not "open source"

> "open weights + open data + full training details including all data and training recipes"

Is it reproducible?

> respecting opt-out consent of data owners (even retrospectivey)

Were they notified and given an option to opt out? Owners and authors are not the same. Data owners aren't copyright owners either.

> avoiding memorization of training data

Not convincing.

I saw some of the pretraining code in github, but not the post-training.