Coding & apps
OpenAI Codex
Codex is an AI coding agent from OpenAI. Use it in ChatGPT, your editor, and the terminal to edit code, run commands, and review changes, or keep tasks running in the cloud.
Offers
OpenAI Codex users get a free banked usage reset!
Every account gets one free banked full Codex usage reset
- Eligible plans
- Go, Plus, Business, Pro
- Eligibility
- ChatGPT accounts that use Codex, delivered in waves, so some accounts get it later than others
- Benefit duration
- Each reset has its own expiration, shown on your account's Usage page
Codex is giving US and Canadian university students $100 in free credits
2,500 free credits ($100 of Codex usage) for verified US and Canadian university students
- Eligible plans
- ChatGPT Free, Go, Plus, Pro
- Eligibility
- Current students at degree-granting universities in the US or Canada, residing there when claiming; SheerID verification with a university email; one offer per student
- Benefit duration
- Valid for 12 months after the credits are granted
What you can do
Developers who want an AI coding agent in ChatGPT, their editor, or the terminal to write and edit code, review changes, and run tasks in the cloud.
Get started
Open https://openai.com/codex/ and sign in with your ChatGPT account to get started. The same account works with Codex in the ChatGPT website, desktop app, and mobile app, as well as in your editor and terminal. To use it in the terminal, install Codex CLI. On macOS and Linux, run curl -fsSL https://chatgpt.com/codex/install.sh | sh. On Windows, open a new PowerShell window and run powershell -ExecutionPolicy ByPass -c "irm https://chatgpt.com/codex/install.ps1 | iex". You can also run npm install -g @openai/codex, or brew install --cask codex with Homebrew. After installation, go to a project directory and run codex. The first time, sign in with ChatGPT or another available method, then describe your first task. To use it in an editor, install the Codex extension in Visual Studio Code, Cursor, Windsurf, or VS Code Insiders, and open the Codex sidebar. In Xcode, open the coding assistant, start a new chat, and choose Codex. In JetBrains IDEs, open AI Chat and select Codex. Then open a project and ask it to explain the code, make a focused change, or help debug an issue. To run a task in the cloud, start a chat in the ChatGPT website or desktop app and choose Work in Cloud. On mobile, open Codex. Cloud tasks keep running after your computer goes to sleep, and you can later review the results, request follow-up changes, or open a pull request.
Sources
- openai.com2026-11-12
- learn.chatgpt.com2026-11-12
- learn.chatgpt.com2026-11-12
- learn.chatgpt.com2026-11-12
- learn.chatgpt.com2026-11-12