OpenAI Codex 0.138.0 alpha release is out
OpenAI released Codex 0.138.0-alpha.4 on GitHub. This is an alpha release, so it is likely meant for testing rather than everyday stable use. Solo makers who rely on Codex should check for issues before switching to it.
Key points
- The release was published on June 4, 2026.
- The public release notes are very short and do not explain major changes.
- If Codex is part of your daily work, treat this as a cautious update, not a must-install release.
Quick term guide
- Codex
- OpenAI’s AI coding tool.
- alpha
- An early test version released before a stable version.
- Git
- A tool that stores code history and helps people share changes.
- alpha release
- An early version that may still change or have problems.
- testing
- The process of checking that software does what it's supposed to do, usually by running it and looking for errors.
- release notes
- A short record of what changed in a software update.