Open Claude Code and run the two commands below. That's the whole setup. You need a ChatGPT subscription (free works) or an OpenAI API key.
02
02Saves tokens
Let them split the work
Claude plans the build and writes the spec. Codex writes the code. You direct both from one chat and burn fewer Claude tokens.
03
03Catch bugs
Review before you ship
Run /codex:review for a read-only code review, or /codex:adversarial-review to make the two AIs challenge each other, band for band, until the best solution wins.