At its core, Work is a knowledge work agent that can connect to hundreds of plugins like Slack, email, Drive, calendar, and CRM, gathering context across platforms and producing finished deliverables. It runs on the Codex harness, inheriting the same models, sub-agents, browser use, and long-running task capabilities, but the UI hides code traces.
Work runs on isolated micro-VMs: Pro accounts get 8 CPUs, 20GB RAM, and 64GB disk; Plus gets 14GB RAM. It also manages a Chrome service for the agent to operate. Each new conversation is called a 'task,' runs in the cloud, and can be switched across devices.
The desktop app has two modes: cloud mode and local mode. Local mode operates directly on the user's machine, similar to Codex but with code UI removed; local tasks do not appear on web or mobile and cannot be migrated to the cloud.