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One agent for everywhere you code—included in ChatGPT Plus, Pro, Business, Edu, and Enterprise plans.
Codex by OpenAIYour new software engineering teammate
For developers who live in the terminal and want ChatGPT‑level reasoning plus the power to actually run code, manipulate files, and iterate – all under version control. In short, it’s chat‑driven development that understands and executes your repo.
OpenAI Codex CLIFrontier reasoning in the terminal