DOACodex
OpenAI coding agent that reads and changes code on your machine from the terminal, with editor options too. A fit if you already use ChatGPT.
When it launched
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Languages
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Where it runs
Windows · Mac · Linux
Plans and price (guide)
Included in every ChatGPT plan. On Free and Go, for light tasks.
What you can do
- Local CLI
- Editor paths exist too
Pros
- Comes with every ChatGPT plan, free included
- Works in your local repo
Limits and plans
- Free and Go only cover light tasks
- You must watch what it runs
What it is good for
- Anyone already on ChatGPT Plus or above
How to get started with Codex
- Start on the free plan and only pay if you outgrow it.
- It takes a little practice: try it on a real task of yours.
- If you get stuck, watch a video tutorial ↗
Alternatives to Codex
See all alternatives to Codex →
Comparisons
Codex: frequently asked questions
What is Codex for?
OpenAI coding agent that reads and changes code on your machine from the terminal, with editor options too. A fit if you already use ChatGPT.
Is Codex free?
It has a free version with limits. Included in every ChatGPT plan. On Free and Go, for light tasks. Prices change: check the official site.
Which devices does Codex work on?
It works on Windows, Mac and Linux.
Is Codex hard to use?
It takes a little practice: try it on a real task of yours.
What are the alternatives to Codex?
The closest are Claude Code, Cursor and GitHub Copilot. You can see them all on the alternatives to Codex page.