What's new in Codex

Codex CLI·Sep 23, 2026

Codex CLI 0.156.1

Choose GPT-6 Sol or GPT-6 Luna from the model picker. The rate-limit switch prompt now recommends GPT-6 Luna.

Codex CLI·Sep 22, 2026

Codex CLI 0.156.0

Choose an optional fullscreen UI with /tui for your next launch, including transcript search, mouse selection, and right-click copying. Voice conversations are enabled by default, with an F8 toggle, a /voice settings picker, and bundled audio runtimes for Linux and Windows.

Codex CLI·Sep 18, 2026

Codex CLI 0.155.1

New local TUI sessions now leave reasoning summaries disabled by default, fixing request rejection by providers that do not support them. Explicit reasoning-summary settings remain respected.

Codex CLI·Sep 17, 2026

Codex CLI 0.155.0

Added experimental /voice conversations with live transcripts and microphone controls on supported builds, enabled through /experimental. The TUI now shows live reasoning summaries in the status row and completion timestamps after successful turns.

Codex CLI·Sep 10, 2026

Codex CLI Cygwin

Codex CLI·Sep 10, 2026

Codex CLI Python

Codex CLI·Sep 9, 2026

Codex CLI 0.154.0

GPT-6-Astra is now available in the model picker and Amazon Bedrock catalogs. Experimental worktree support lets you create isolated checkouts for new or forked sessions using --worktree or /worktree, then browse and resume them.

Codex CLI·Sep 4, 2026

Codex CLI 0.153.3

Added GPT-6-Astra to the Amazon Bedrock model picker for Mantle and Runtime global/US routes.

Codex CLI·Sep 4, 2026

Codex CLI 0.153.4

Fixed Astra’s visibility in the bundled model picker and made it the bundled default when no model is explicitly configured. Updated Astra’s guidance to use asynchronous questions only when the tool is available in the session.

Codex CLI·Sep 3, 2026

Codex CLI 0.153.0

Vim mode now supports undo with u and redo with Ctrl+R, preserving complete drafts including pasted content and attachments. The plugin CLI can list, install, and remove plugins from remote marketplaces.

Codex CLI·Sep 3, 2026

Codex CLI 0.153.1

Added support for configuring GPT-6-Astra through the API without changing the default model or showing it in the model picker.

Codex CLI·Sep 3, 2026

Codex CLI 0.153.2

Corrected the GPT-6-Astra Fast tier description to say “2x speed, increased usage” instead of “1.5x.” This changes only the displayed text, not how requests run.

Codex CLI·Sep 1, 2026

Codex CLI 0.152.0

Vim mode supports / and ? searches within drafts, highlighted matches, and repeat navigation with n and N. Rate-limit banners offer actions for checking usage, managing credits, resetting limits, and managing plans.

Codex CLI·Sep 1, 2026

Codex CLI 0.152.1

Guardian approval review now honors Node REPL policies provided through model metadata.