OpenAI Codex Cloud API: thousands of parallel coding tasks on sandbox repos

OpenAI relaunches the Codex name, this time as an API for running programming tasks in parallel in the cloud. It is not an editor or an assistant: it is a service where you send tasks (write this test, fix this bug, implement this function) and thousands of o3 model instances work simultaneously on isolated repositories in the cloud. It is designed for companies that want to automate development work at scale: you can launch hundreds of code migrations in parallel without occupying local resources. Pricing combines the cost per token (for the AI) and the cost per compute (for code execution).