Codex | AI Coding Partner from OpenAI
openai.com
Use Codex across ChatGPT, your editor, and the terminal, all connected by your ChatGPT account. “At Wonderful, Codex CLI has completely replaced every other agentic harness for our core technology and architecture work requiring deep reasoning and understanding.”
Codex CLI | ChatGPT Learn
learn.chatgpt.com
Inspect code, make changes, run commands, and automate repeatable work without leaving your terminal. Let Codex inspect files, make edits, and run the tools already installed on your machine. Choose the model, reasoning effort, permissions, and commands that fit the task.
Codex IDE extension | ChatGPT Learn
learn.chatgpt.com
Install or enable Codex, sign in, and start a chat with the context already open in your editor. Choose your IDE. VS Code and compatible editors use the Codex extension; Xcode and JetBrains IDEs provide their own integrations. VS Code, Cursor, or Windsurf: choose the Codex icon.
Using Codex with your ChatGPT plan - OpenAI Help Center
help.openai.com
Codex is included across ChatGPT plans, including Free and Go. Codex Cloud is available to eligible Plus, all Pro tiers, Business, Enterprise, Healthcare, and Education accounts, subject to rollout and workspace settings. It is not included with Free or Go. Sign in with your ChatGPT account.