alt Hacker NewsOpen source: source code available, and can be used for whatever.
Source-available: source code available, but only for viewing, not to make derivatives.
Freeware/shareware: source code not available, but software is free to run.
Not sure what the weights equivalent of that last one is, but I feel like this is more like source-available.
It isn't a perfect analogy, but I think the weights of a model are closer to a compiled executable than source code.