OpenAI has a Mac "superapp" in development that unifies its ChatGPT app, Codex coding platform, and Atlas browser, reports The Wall Street Journal ($). The idea behind the all-in-one app is to simplify the user experience, following the launch of several standalone products, some of which haven't resonated with OpenAI's customers. The company is also trying to bounce back after the recent successes of its main rival, Anthropic.