I've wondered the same thing. I haven't noted any large improvements in Google Translate despite the RNNs demonstrating big gains for at least 3 years now. Howe

I've wondered the same thing. I haven't noted any large improvements in Google Translate despite the RNNs demonstrating big gains for at least 3 years now. However, in all the public comments by Googlers I've read, I'm not sure they have rolled out RNN to Google Translate publically yet - this is the same company that created its own ASICs to save electricity on big deployments because Nvidia isn't moving fast enough.