OpenAI now sells GPT-6 Astra as a computer-use model that finishes multi-step jobs in a browser, xAI rents out persistent agents with their own cloud computers for $20 a month, and Runway can generate the interface itself. AI stopped being a chat window. This is a practical field guide to delegating real work — what to hand over, how to set permissions, how to accept the output, and where it actually breaks, based on a live one-person company that already runs this way.