Anthropic is expanding Claude Cowork beyond its desktop app to web and mobile, making it available for Max subscribers starting Tuesday. This move transforms Cowork from a coding tool into a true administrative agent that can handle tasks across devices—starting a project on a laptop, checking status on a phone, and finishing up later even if the computer is off. The shift reflects a broader trend as AI labs like OpenAI push their coding agents into office productivity, handling reports, spreadsheets, research, and data analysis. Early data from over 600,000 organizations shows the biggest use cases are business process operations like report gathering and onboarding checklists, along with content creation. The agent runs tasks in the background without needing a device online, and the unified chat and Cowork experience on web and desktop should lower the barrier for non-developers. Why it matters: This signals that the AI battleground is moving beyond chatbots to owning the workflow space where knowledge work actually gets done.