I wish they wouldn't call them "open source models". They aren't open source. They didn't publish the training data. They didn't publish the tools they used to train the model. They published the weights. It's an "open weight model", a term that it seems nearly everyone has agreed is appropriate. Why is this company not using it?
The models are open source, it’s never been a requirement for someone to document the entire process of creating something to be “open source”. Just sharing the source, in this case, the weights, meets the criteria. Software engineering’s obsession with precise terms is actually one of the things I’m glad is dying with ai automation.
The weights are the output of a program, it's a binary. It's not source.