Dude, the source of an LLM is the training data and the training algorithm. Those are not open, so stop calling it open source.

Open weights correspond to "binary available" for software. Nobody would call that "open source".

(Even ignoring the licensing which "open source" normally entails.)

Many open weight models do actually have open training data and training algorithms -- I think especially some from Nvidia!

Dude, many of them are open source and open data on Hugging face, including some Nvidia LLM models.