Right, but you still don't know that the big model has exactly the same "jargon" handling as you do. Plus it means that you can't use smaller models not trained

Right, but you still don't know that the big model has exactly the same "jargon" handling as you do. Plus it means that you can't use smaller models not trained on that jargon. That seems like a really limiting black box to place at the heart of a system.