Find the right Codex for you.
Choose your system and download from an official source or a third-party mirror.
Choose your system
macOS Apple Silicon
Download Codex (Apple Silicon)Official downloadmacOS Intel
Download Codex (Intel)Official downloadGreen buttons use the third-party Wangnov / codex-app-mirror service. Links below them use official sources. Files are provided by the linked source.
New to Codex? Start with these three guides.
Install → Complete a small task → Troubleshoot by symptom.
Install Codex on Windows
Official download, sign-in, workspace setup, and an installation checklist.
Your first Codex taskBuild a reading-list webpage with a concrete prompt and verify its behavior.
Codex troubleshootingTroubleshoot installation, sign-in, limits, missing files, and broken interactions.
Keep learning, from basics to real projects.
Installation overview
1
Choose your system
The Windows button is for x64 devices. On a Mac, check About This Mac; choose Apple Silicon for M-series chips.
2
Download and install
On Windows, follow the official Store installation instructions. On macOS, open the DMG and move the app to Applications.
3
Sign in and start
Open the app and follow the official sign-in instructions. Access, features, and limits depend on OpenAI’s current rules.
What about Windows ARM64 or Linux?
For Windows ARM64, Linux previews, and older versions, see the mirror project’s Releases. Choose the appropriate platform and architecture. Linux preview packages are separate from the stable download links.
What if a download fails or installation is blocked?
Try the official download link below the card. Follow administrator requirements on Windows; contact the administrator on a managed device. Mirror availability depends on the third-party service and your network.
How can I check a downloaded file?
Use the matching release to obtain SHA256SUMS.txt and compare the downloaded file’s SHA256 hash. Use the checksums for the same version.