Codex
Build anything with Codex — move faster and bring your biggest ideas to life.
OpenAI's cloud-based AI coding agent that works across ChatGPT, your IDE, and the terminal on real engineering tasks.
Codex docs — getting started
1 / 2Overview
What is Codex?
Build anything with Codex — move faster and bring your biggest ideas to life.
Codex is OpenAI's AI coding agent for real engineering work: fixing hard-to-find bugs, complex refactors, new feature development, and automated pull-request review.
It works in three connected places — a cloud agent in ChatGPT on the web, an IDE extension, and a command-line tool (npm i -g @openai/codex) — all linked through your ChatGPT account, so the same agent follows you everywhere you code. Cloud tasks keep running after you close your laptop, with reusable cloud environments per repository.
Codex supports parallel multi-agent workflows: several agents can work at once, verify their work with computer and browser tools, and you review the results in one place.
Codex is included in ChatGPT plans rather than sold separately: Plus ($20/month), Pro ($100/month), and Business ($20/user/month), with Enterprise and Edu plans also covered. GPT-6.1 Sol is available in Codex for Plus, Pro, Business, Enterprise, and Edu users, and an upcoming Ultrafast inference tier promises up to 8x faster token generation in Codex.
Platforms and languages
Codex Availability
Platforms
Languages
Capabilities
Codex Key Features
Cloud coding agent that keeps working after you close your l
Cloud coding agent that keeps working after you close your laptop
Parallel multi-agent workflows verified with computer and br
Parallel multi-agent workflows verified with computer and browser tools
Automated pull-request review with comments and Q&A
Automated pull-request review with comments and Q&A
One agent across web, IDE extension, and CLI via your ChatGP
One agent across web, IDE extension, and CLI via your ChatGPT account
Plugins to connect external tools and extend capabilities
Plugins to connect external tools and extend capabilities
GPT-6.1 Sol support with an upcoming Ultrafast tier for fast
GPT-6.1 Sol support with an upcoming Ultrafast tier for faster generation
Plans and access
Codex Pricing
Paid
Common questions
Codex FAQs
What is Codex?
OpenAI's AI coding agent for engineering work — fixing bugs, refactoring, building features, and reviewing pull requests. It runs in ChatGPT on the web, as an IDE extension, and as a command-line tool, all connected through your ChatGPT account.
Do I need to pay extra for Codex?
No separate purchase: Codex is included in ChatGPT plans — Plus at $20/month, Pro at $100/month, Business at $20/user/month — with different usage allowances per plan. Enterprise and Edu plans are also covered.
Which platforms does Codex support?
ChatGPT on the web and desktop apps (including Linux), the Codex IDE extension, the Codex CLI (installed via npm), and the Codex cloud environment.
Can I use GPT-6.1 Sol in Codex?
Yes. OpenAI's announcement confirms GPT-6.1 Sol is available in Codex for Plus, Pro, Business, Enterprise, and Edu users. It is not yet available in regular ChatGPT chat.
Do Codex tasks stop when I close my computer?
No. Codex runs in the cloud, so tasks continue after you close your laptop. Each repository gets a reusable cloud environment, and you can check progress from another device.
Reviews
See what the community thinks and share your experience.
—
Based on 0 ratings
Rating distribution
Community reviews
No reviews
No written reviews yet.
