OpenAI Codex CLI rust-v0.4.0
OpenAI Codex CLI rust-v0.4.0 was released on .
Summary
Honor the OPENAIBASEURL environment variable for the built-in openai model provider: https://github.com/openai/codex/pull/1487 Support modelreasoningeffort and modelreasoningsummary when definin...
Release Context
- This was the 3rd OpenAI Codex CLI release of 2025 tracked by Havoptic.
- It shipped 1 day after OpenAI Codex CLI rust-v0.3.0 (July 8, 2025).
Shipped around the same time
Within 3 days of this release, other AI coding tools also shipped:
- Claude Code v1.0.51 (July 11, 2025)
- Gemini CLI v0.1.10 (July 11, 2025)
- Gemini CLI v0.1.11 (July 11, 2025)
- Claude Code v1.0.48 (July 10, 2025)
- Gemini CLI v0.1.9-nightly.250710.da50a1ee (July 10, 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-v0.144.6 (July 18, 2026)
- rust-v0.144.5 (July 16, 2026)
- rust-v0.144.4 (July 14, 2026)
- rust-v0.144.3 (July 13, 2026)
- rust-v0.144.2 (July 13, 2026)
All OpenAI Codex CLI releases · All AI coding tool releases on Havoptic