Codex changelog

CLI 0.163.0

Open `/config` to search preferences across categories, change supported settings immediately, and see which changes require a restart. (#52990, #53429)

GPT-5.5 retirement in Codex

Effective October 14, 2026, at noon PDT (19:00 UTC), GPT-5.5 retires from

Composer predictions in Codex

Composer predictions adds autocomplete-style suggestions for your next message in

CLI 0.162.1

Fixed a TUI crash when asynchronous questions contain multiple lines, preserving line breaks and complete hyperlink destinations. (#51866)

GPT-6.1 Sol Ultrafast in Codex and ChatGPT Work

Ultrafast mode speeds up token generation with GPT-6.1 Sol in Codex and

Codex app

Performance improvements and bug fixes

CLI 0.162.0

Add tools for creating and listing managed Git worktrees from trusted local projects when the worktrees feature is enabled. (#50148)

Codex app

Performance improvements and bug fixes

CLI 0.160.1

Preserve `SYSTEMROOT`, `TEMP`, and `TMP` when launching remote stdio MCP servers with explicitly configured remote environment variables, allowing Unix hosts to retain the Windows executor's startup environment.

Codex app

Added the option to move selected chats to a project at once.

CLI 0.159.3

Eligible local sessions signed in with ChatGPT can now show optional reminders to complete account security setup. (#49744)

GPT-6.1 Sol in Codex and ChatGPT Work

GPT-6.1 Sol offers near-Astra performance for complex work at a lower cost than

Codex app

Performance improvements and bug fixes

CLI 0.159.2

Suppressed console windows flashing on Windows when Codex launches background processes and sandboxed commands. (#49385)

CLI 0.159.1

Added GPT-6.1 Sol as the default model in the bundled catalog and Amazon Bedrock Mantle and Runtime catalogs. (#49323, #49342)

CLI 0.159.0

Opt-in `instant_interrupt` lets new input steer Codex during model responses or long-running code-mode calls. (#48135, #48141)

CLI 0.158.0

Configure copy-on-select and right-click paste in the fullscreen TUI. Copied transcript selections now preserve Markdown formatting. (#47639, #47896, #48118)

CLI 0.157.1

Release highlights could not be determined: the supplied PR index is empty, and the GitHub tag comparison returned 404.

macOS security update

Fixed CVE-2026-100754 on macOS in version 26.924.20706, with thanks to Patrick Wardle, Objective-See Foundation.

CLI 0.157.0

Added GPT-6 Sol and Luna, including Amazon Bedrock support and migration prompts for older models. (#47332, #47347)

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. (#47405)

GPT-6 Sol and Luna in Codex and ChatGPT Work

GPT-6 Sol and GPT-6 Luna are rolling out to Codex and ChatGPT Work at lower

Codex app

Added a notification sound setting for task completions, permission requests,

CLI 0.156.0

Choose an optional fullscreen UI with `/tui` for your next launch, including transcript search, mouse selection, and right-click copying. (#46732, #46734, #46883, #46895)

CLI 0.155.1 restores a quiet reasoning-summary default

New local TUI sessions leave reasoning summaries off unless you set them. Providers that reject those summaries stop failing the first turn.

Affects

No published quota change.

Do this

Upgrade if a provider was rejecting new local sessions.

Codex app

Performance improvements and bug fixes

CLI 0.155.0 adds experimental /voice and agent-task cleanup

Stable CLI build. Experimental /voice needs /experimental. The TUI can hide, archive, or delete agent tasks and confirm deletion of clean managed worktrees. Touch ID can gate MCP requests on supported Macs.

Affects

No published quota change.

Codex app

Performance improvements and bug fixes

GPT-5.5 leaves ChatGPT, Work, and Codex on 14 Oct 2026

The retirement covers consumer, Business, Enterprise, and Edu on those products. The API listing is unchanged.

Affects

ChatGPT-signed Codex, Work, and Chat lose gpt-5.5. API keys are out of scope.

Do this

Move ChatGPT-signed Codex selections to gpt-5.6-sol before 14 Oct. Update workspace defaults and scheduled tasks.

GPT-5.3-Codex-Spark is gone

The research preview left the ChatGPT desktop app, Codex CLI, and the IDE extension on 14 Sep 2026.

Affects

Saved configs, custom agents, and scripts that still name gpt-5.3-codex-spark fail on those surfaces.

Do this

Pick a current bundled model. Official text points Fast mode for a quicker supported option.

Deep Research lands in Work and Codex

Plus, Pro, Business, Enterprise, and Edu users with Work can run Deep Research from Work or Codex on web, desktop, iOS, and Android. Chat Deep Research limits stay on their own counter.

Affects

Official note: it spends the existing Work/Codex allowance or credits. Chat Deep Research caps do not move.

Do this

Start with @Deep Research in Work, or ask for deep research. Treat it as Work/Codex burn, not a free extra window.

Data plugin opens in Work and Codex

Install Data from the plugin directory, then talk to @Data. Queries use the connected account’s permissions. The note does not publish a separate quota.

Agents API public beta uses a managed Codex harness

Platform changelog: sessions, compaction, and recovery run on OpenAI. Sandboxes can be hosted or your own. This is API billing, not a ChatGPT plan perk.

Affects

A ChatGPT Plus or Pro seat does not include this. Usage is API, not the Work/Codex 5-hour pool.

Do this

Use it only with an API project. Do not expect the subscription meter to cover it.

Codex app

Added a configurable shortcut to open web links in your default browser.

codex mcp-server is removed

Deprecated on 24 Aug, deleted on 5 Sep. The standalone binary is gone. Connecting out to other MCP servers through `codex mcp` still works.

Affects

Integrations that launched `codex mcp-server` or the standalone binary break on upgrade.

Do this

Move those launches to the Codex app server. Official text still calls app-server experimental, not production-supported.

The command and standalone

binary have been removed. See the

CLI 0.153.4 puts Astra in the bundled picker

Astra shows in the bundled model list and becomes the bundled default when no model is set. Async questions stay gated on the tool being in the session.

Affects

Unset model configs on this CLI build resolve to Astra. Published Work/Codex windows are unchanged.

Do this

Pin a model in config if you do not want the new bundled default.

GPT-6 Astra starts a limited rollout

Announced for harder coding, research, and computer-use work. Access was limited organizations first, not general. Agent turns may pause if safety monitoring flags a misread instruction.

Affects

No public turn count or extra window. Availability depends on the rollout, not on buying a new tier.

Codex app

Codex app

Work and Codex can call site tools in the desktop browser

WebMCP site tools need GPT-5.6 Sol or Terra in the desktop built-in browser. Luna is out. Enterprise and Edu workspaces are out. Cloud-browser sign-in is a Work-on-web/iOS/Android path on eligible plans, also not for Enterprise or Edu.

Affects

Sol/Terra desktop Work and Codex only. Official text does not add a new allowance.

Trigger scheduled tasks from Gmail, Slack, and GitHub events

ChatGPT scheduled tasks can now run when supported events occur in Gmail, Slack,

Browser extensions, site tools, and cloud sign-in

ChatGPT browser extension

Codex MCP server command deprecated

command is now deprecated. Use the

Desktop Codex can share a read-only thread snapshot

macOS desktop: share a static local Codex thread. Personal links are open to anyone with the URL; workspace links stay inside the workspace. Known secret patterns are redacted; paths and diffs can still leak. Apple Messages also works in Work and Codex on Apple silicon, with send approval on by default.

Do this

Review a snapshot before sharing. Revoke links under ChatGPT data controls → Shared links.

Codex and ChatGPT updates

Apple Messages plugin

GitLab support in Codex cloud (Beta)

GitLab support is available in beta on all ChatGPT plans. Connect a GitLab

GitLab reaches Codex cloud in beta

All ChatGPT plans can connect a GitLab project to Codex cloud, start tasks from issues or merge requests with @codex, and request reviews. A managed-workspace admin can turn the connector off.

Affects

Runs in Codex cloud, so it spends that surface’s allowance, not a new published pool.

Public plugin catalog CSV export

Eligible ChatGPT Enterprise workspace owners and admins can download a CSV of

Computer History can feed ChatGPT and Codex on Mac

Opt-in macOS timeline of app and site events, not screenshots or audio. Pro, Business, and Enterprise. Admins must enable it before members opt in. First ship excluded the EEA, UK, and Switzerland; those regions opened later for the same plans.

Affects

Off by default. No published extra quota. Business and Enterprise need admin access first.

Do this

Leave it off unless you want that context. Pause or delete history from settings if you turn it on.

Computer History

in the ChatGPT desktop app on macOS that turns activity across apps and

Linux desktop preview and imports from other agents

ChatGPT desktop preview on supported Ubuntu, Debian, and Fedora builds includes Codex. The app can import Claude Code, Claude Cowork, and Cursor setup. CLI `/import` covers Claude Code and Cursor chats.

Linux desktop preview and agent imports

Install the ChatGPT desktop app on Linux

Introducing Daybreak Blue and Daybreak Red

Daybreak now offers two access tiers for approved defenders: Daybreak Blue and

GPT-5.4 left ChatGPT-signed Codex on 31 Aug 2026

gpt-5.4 and gpt-5.4-mini dropped from Codex for ChatGPT sign-in. API-key Codex and the API itself kept them.

Affects

ChatGPT-signed Codex only. API-authenticated sessions were out of scope.

Do this

Official replacements were gpt-5.6-terra for gpt-5.4 and gpt-5.6-luna for gpt-5.4-mini.