Codex v0.123.0 — four alphas in six hours

Source: GitHub releases (openai/codex) Date: 2026-04-21

Summary

The Codex alpha pipeline jumped from v0.122.0 stable (April 20) to v0.123.0 with four alpha releases in 6.5 hours: alpha.2 (00:27 UTC), alpha.3 (03:38 UTC), alpha.4 (05:59 UTC), alpha.5 (06:52 UTC). This is the fastest alpha cadence tracked. The pipeline velocity suggests rapid polish/fix iteration on v0.122.0 features rather than a new feature wave.

Implications

Codex operates the most aggressive CI/CD pipeline in the coding agent space by release frequency. The immediate jump from stable to next-version alpha with sub-hour iteration cycles indicates industrial-scale automation in the build/test/release pipeline. v0.123.0 stable likely within 2-3 days at this pace.