After weeks of buzz, OpenAI has released Operator, its first AI agent. Operator is a web app that can carry out simple online tasks in a browser, such as booking concert tickets or filling an online grocery order. The app is powered by a new model called Computer-Using Agent—CUA (“coo-ah”), for short—built on top of OpenAI’s multimodal large language model GPT-4o. Operator is available today at operator.chatgpt.com to anyone signed up with ChatGPT Pro, OpenAI’s premium $200-a-month service. The...