Sean Song calls on-device 'contract'

- Sean Song described Apple's on‑device LLM strategy as a "product contract" that guarantees bounded latency, predictable cost, and privacy guarantees for apps. (x.com) - His framing says developers can sell fixed latency and fixed inference cost as a product promise, shifting competition to distribution and guarantees. (x.com) - If adopted widely, this contract model will push vendors to certify SLAs, local model signing, and clear handoff policies for hybrid workloads. (x.com)