My feeling is that Flux is a fantastic tool for playing with innovative models which can't be expressed in the usual frameworks. And quite possibly already the

My feeling is that Flux is a fantastic tool for playing with innovative models which can't be expressed in the usual frameworks. And quite possibly already the best thing that exists for open ended experimentation in ML. On the other hand, for training and deploying models which are easily expressed in other frameworks you will find a lot more ready made pieces of infrastructure elsewhere.