With that level of overhead, all kinds of otherwise inefficient approaches of getting compute start to seem comparably cheap. This is progress, but it still needs like a hundredfold improvement in order to become practical; I don't see a usecase where the benefits of this proof would be worth 70x or even 7x increase in cost.
Yes, the generation is slower but I think here the verification itself is more efficient than regenerating the output.
I think there is a place for both. Deterministic inference has other benefits, like "compressing" an output into input+model, as well as more esoteric applications like solving coordination problems. But if we get fast ZKPs for real frontier models, I'll be overjoyed!