MIT doesn't bar additional restrictions, so you could say this is MIT except you can't train on it. GPL on the other hand does not allow additional restrictions and therefore the code would not be compatible.

but you can't copyright the output anyways. which either makes the restriction on training void or, it means the owners of the model own the copyright, and they only transfer some of the ownership to you. is there such an ownership transfer statement? i haven't seen one yet.