lrrna

It is not undefined. The wrong term is just repeated in marketing campaigns, by Meta developers and those building businesses on Llama until people believe it.

They could use the more correct Open Weights (which is still a euphemism because of the EULA).

But they do not, and they know perfectly well what they are doing. They are the ones responsible for these discussions, but they double down and blame the true OSS people.

We have that definition. The user needs the complete capability to reproduce what is distributed. Which means training data and the source used to train the model.

If you distribute the output of bison (say, foo.c) and not the foo.y sources, you would get pushback.

Then there is the EULA which makes it closed source right from the start.