Neural networks are a fundamentally statistical technique, so you find the state of the art whereever you find the largest scale. No one is operating at larger

Neural networks are a fundamentally statistical technique, so you find the state of the art whereever you find the largest scale. No one is operating at larger scale than Google, which has the second order effect of attracting the best talent, which then gets sorted to the highest priority problems. There are a non-trivial number of instances where Google will beat their own state of the art, and I'm quite confident they are sitting on further results to avoid a public embaressment of riches.