If it’s all in the cloud - yes. If some/most of it runs locally - still yes with a caveat - hardware acceleration can make it run both faster and at a lower battery cost, same how every computer has a dedicated graphics chip, whether as a separate expansion card or a separate module on the CPU. Yes, you technically can do all that math on CPU, it’s called software rendering, but rendering done with a purpose-built chip is so much better. Same logic applies to “AI”.