Personal Computer by Perplexity introduces a new approach to operating systems by shifting from instruction-based computing to objective-driven computing. Rather than requiring users to manually guide every step, the system allows users to define goals while the AI manages the processes needed to complete them. The platform runs as a continuously active desktop environment that gives the Perplexity Computer and Comet Assistant persistent access to files, applications, and user sessions. Acting as a digital proxy for the user, the AI can help automate tasks, organize information, and interact with software across the computer. Users can control the system remotely from other devices, allowing them to manage their computing environment even when they are away from their primary machine. Built-in security controls ensure that sensitive actions always require explicit user approval. Every action taken by the system is logged to provide transparency and accountability. A kill switch feature allows users to immediately stop AI activity if needed. The system is designed to blend human control with intelligent automation in everyday computing tasks. Personal Computer represents a shift toward AI-native operating systems that work alongside users rather than simply responding to commands.