Perplexity and Nvidia have jointly released Portable Computer, a device designed to run AI agent workloads entirely on local hardware. Models, files, and processing operate on-device; tasks completed locally incur no token-cost billing. Escalation to cloud frontier models requires explicit user authorisation, establishing a privacy-by-default architecture rather than one that defaults to cloud transmission. The commercial proposition targets three enterprise segments with overlapping concerns: organisations with data-sovereignty requirements that preclude cloud transmission of sensitive content; high-inference-volume deployments where per-token costs at scale have become a material line item; and jurisdictions where cloud data-residency compliance introduces legal complexity. For each segment, a device-native architecture with no per-token billing represents a structurally different cost and risk model than cloud-first alternatives — and, notably, a distribution model that bypasses the API pricing dynamics of the major model providers entirely.