Since spring of last year, OpenAI has been offering its coding app Codex. Originally, it was a response to the successful Claude Code application from Anthropic. But now OpenAI is bringing Codex as a macOS app and wants to make the tool something more sophisticated in the process, Engadget reports. In its most basic form, Codex is a programming agent capable of writing code for users. But now it can also manage multiple AI assistants that can work together to accomplish more complex tasks.