OpenAI Codex

• https://github.com/openai/codex
• https://developers.openai.com/codex
• Uses the models GPT-5.4 or Codex (old versions)

brew install --cask codex
code # cli
code-app # gui

BIlling

• You can run Codex with your ChatGPT subscription: Plus, Pro, Business, Edu, or Enterprise
• Or use your API key