OpenAI shipped Codex CLI rust-v0.156.0 and hotfix 0.156.1 on 2026-09-22/23 (@openai/codex). 0.156.0 adds optional /tui fullscreen, voice default-on, /usage, worktrees on by default, themes/Mermaid, plus sandbox fixes. 0.156.1 adds GPT-6 Sol/Luna to the picker and recommends Luna on rate-limit switches.

Key Takeaways

  • ✓Install @openai/[email protected] (0.156.0, 0.156.1)
  • ✓/tui fullscreen; voice default-on (F8); /usage dashboard
  • ✓Worktrees enabled by default from the agent command center
  • ✓Sandbox isolation fixes for Windows inbound, privileged sockets, macOS handles
  • ✓0.156.1 adds GPT-6 Sol/Luna; rate-limit prompt recommends Luna
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Project Links & Resources

Direct Access
Direct access to official project resources and documentation
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GitHub Release: rust-v0.156.0
github.com/openai/codex/releases/tag/rust-v0.156.0
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GitHub Release: rust-v0.156.1
github.com/openai/codex/releases/tag/rust-v0.156.1
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npm: @openai/codex
www.npmjs.com/package/@openai/codex
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GitHub: openai/codex
github.com/openai/codex
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In-Depth Technical Analysis

Core Background & Industry Pain Points

Long terminal agent sessions make scrollback, copy, usage, and parallel worktrees painful. Codex 0.156 densifies the operator surface after experimental voice in 0.155.

Architecture Highlights & Internals

0.156.0: /tui, voice default-on, /usage, worktrees on by default, themes/Mermaid, /daemon. 0.156.1 adds GPT-6 Sol/Luna to the picker.

Authoritative Benchmarks & Measured Scores

No official latency/accuracy suite-features and sandbox fixes only.

Developer Hands-on Guide

npm i -g @openai/[email protected], use /tui and /usage, lean on default worktrees, pick Sol/Luna as needed. Repo: openai/codex.

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