[ConstantineXVI]

As of JB, it can do both. Though I believe the offline mode is only used as a backup if the network's acting up.

[Tyrannosaurs]

I wonder whether the offline performance is comparable?

If it was then surely you'd do all the voice parsing locally so I'm guessing that it's not. Unless anyone can think of another reason you'd push it through the servers?

[ConstantineXVI]

Two factors:

- online should have more training data and can be improved much more easily. Don't see that advantage going away.

- power efficiency and/or speed. Sending 5s of audio across the net can be less strain on the device (esp. older ones) versus parsing the audio locally.