OpenAI Codex
OpenAI's cloud-based software engineering agent.
Runs tasks in an isolated cloud container against your repository, working in parallel on multiple assignments and producing diffs or PRs. Also available as a CLI. Strongest when the task is clearly bounded and the repo has good tests to verify against.
Best for
Handing off a well-specified task and coming back to a pull request.
Watch out for
Cloud execution means the sandbox may not match your local environment.
Using this and stuck anyway?
Knowing the tool isn't the same as finishing the project. If yours has stopped moving, we'll take a look at it.
Tell us what's broken