OpenAI Codex CLI rust-v0.56.0
OpenAI Codex CLI rust-v0.56.0 was released on .
Summary
Highlights - Introducing our new model GPT-5-Codex-Mini — a more compact and cost-efficient version of GPT-5-Codex
Release Context
- This was the 51st OpenAI Codex CLI release of 2025 tracked by Havoptic.
- It shipped 3 days after OpenAI Codex CLI rust-v0.55.0 (November 4, 2025).
Shipped around the same time
Within 3 days of this release, other AI coding tools also shipped:
- Gemini CLI v0.15.0-nightly.20251110.c0b766ad (November 10, 2025)
- Claude Code v2.0.36 (November 7, 2025)
- Gemini CLI v0.15.0-nightly.20251107.cd27cae8 (November 7, 2025)
- Gemini CLI v0.13.0 (November 7, 2025)
- Gemini CLI v0.14.0-preview.0 (November 7, 2025)
Compare OpenAI Codex CLI: vs Claude Code · vs Cursor · vs Gemini CLI · vs Kiro CLI · vs GitHub Copilot CLI · vs Devin Desktop · vs Antigravity CLI
Other Recent OpenAI Codex CLI Releases
- rust-v0.142.4 (June 29, 2026)
- rust-v0.142.3 (June 26, 2026)
- rust-v0.142.2 (June 25, 2026)
- rust-v0.142.1 (June 25, 2026)
- rust-v0.142.0 (June 22, 2026)
All OpenAI Codex CLI releases · All AI coding tool releases on Havoptic