Comment by jroesch

Things are already possible on today's hardware, see https://github.com/mlc-ai/mlc-llm which allows many models to be run on M1/M2 Macs, WASM, iOS and more. The main limiting factor will be small enough, high quality enough models that performance is high enough ultimately this is HW limited and they will need to improve the neural engine/map more computation on to it to make the mobile exp. possible.