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OpenAI's official Codex changelog. Codex app: Codex in ChatGPT, the desktop app and the web. Codex CLI: the version that runs in a terminal window.

Compiled by the Toolstash team · Updated

  1. Codex CLI

    Codex CLI 0.165.0

    6 new6 fixes

    Added a built-in Google Cloud Vertex AI provider, configured with model_provider = "gcp". Added GPT-6.1 Terra to the model catalogs.

  2. New model

    GPT-6.1 Terra in Work and Codex

    GPT-6.1 Terra is now available in ChatGPT Work and Codex on Plus, Pro, Business, Enterprise, and Edu plans. It's a fast, efficient model for professional work that combines strong image understanding with precise computer use. Reason about images and screens, then act on what you find across your browser, desktop, and apps. Terra also provides clear, direct writing that puts results first and explains supporting details in plain language. Choose GPT-6.1 Terra from the model list in Advanced in the ChatGPT desktop app or ChatGPT Work on the web. Work also supports Terra on mobile. The model isn't available in Chat and does not support UAE inference residency. Enterprise access depends on workspace availability and administrator controls.

  3. Codex CLI

    Codex CLI 0.164.0

    6 new6 fixes2 other

    Save reusable prompts and slash commands in ten numbered /presets slots, with a keyboard menu for quick access. Set model, reasoning effort, speed, and permission profiles directly with inline /model and /permissions arguments.

  4. Codex app

    ChatGPT for iOS

    View and stop background commands from a new pill above the composer on supported remote hosts. Mention chats from other connected hosts with @. A loading indicator now shows when saved messages are refreshing. Activity groups are cleaner, and you can open images inspected by Codex on demand. Unanswered questions remain available after a turn finishes and when reopening a chat. More reliable replies to questions while another prompt is starting or finishing. Autocomplete suggestions appear as each source loads, without waiting for slower sources. Usage-limit explanations and reset times now appear directly in the chat. Fixed prompts incorrectly appearing to fail after a response timeout. Corrected extra diff lines after repeated edits to the same file. Images in responses open in the full-screen gallery, and attachment removal targets the correct image. The voice button returns after a call ends, so you can start another without reopening the chat.

  5. Codex CLI

    Codex CLI 0.163.0

    6 new6 fixes4 other

    Open /config to search preferences across categories, change supported settings immediately, and see which changes require a restart. Send a follow-up while Codex is responding to steer it immediately. Interrupting a turn also stops active Code Mode cells and their nested tool calls.

  6. Codex app

    GPT-5.5 retirement in Codex

    Effective October 14, 2026, at noon PDT (19:00 UTC), GPT-5.5 retires from Codex for users signed in with ChatGPT. The OpenAI API and Codex sessions authenticated with an API key aren't affected. Use GPT-6.1 Sol (gpt-6.1-sol) when available to your plan and client. Update workspace defaults, saved model settings, managed configurations, custom agents, scheduled tasks, and scripts that still select gpt-5.5.

  7. Codex app

    ChatGPT for iOS

    File citations now open directly in the file viewer. Collapse the entire Projects section to reach recent tasks faster. Faster task and thread loading, with saved task names and recent messages visible while reconnecting. Markdown now renders in sent prompts, with questions quoted above your replies. Queued messages appear immediately, with more reliable handling during turn interruptions. Markdown files open in rendered view by default. Clearer skill names and improved autocomplete after punctuation. Fixed missing Rename prompts and usage percentages on iPad. Plan mode stays selected when returning to the task list. Custom permission mode now respects project-defined permissions. Improved task widget reliability, including when local authentication is enabled for Codex. Usage widgets adapt to accounts with only a weekly limit. Connection errors offer a Retry action without hiding saved messages. Fixed raw image URLs appearing in image-only messages.

  8. Codex app

    Composer predictions in Codex

    Composer predictions adds autocomplete-style suggestions for your next message in the Codex desktop app. After Codex responds, it uses the current conversation to suggest a follow-up prompt in the message box. Press Tab to accept the suggestion as an editable draft, or type your own message. Accepting a prediction doesn't send it for you. The feature is available in beta to users aged 18 and older with personal ChatGPT Pro plans in supported regions, in local and SSH threads with GPT-6 Astra and GPT-6.1 Sol. Learn more about composer predictions.

  9. Codex CLI

    Codex CLI 0.162.1

    2 fixes

    Fixed a TUI crash when asynchronous questions contain multiple lines, preserving line breaks and complete hyperlink destinations. Fixed startup failures caused by differences between a running background server's feature settings and CLI defaults. Compatibility checks now apply only to explicit command-line feature overrides.

  10. Codex app

    Codex app

    Performance improvements and bug fixes. Fixed queued messages getting stuck on Sending and restored Steer in secondary app windows. Improved scrolling and navigation between files in the Changes panel. Added clearer recovery guidance when a tool call needs approval but the chat's permissions prevent approval requests, with a link to those permissions when available.

  11. Codex CLI

    Codex CLI 0.162.0

    6 new6 fixes2 other

    Add tools for creating and listing managed Git worktrees from trusted local projects when the worktrees feature is enabled. Pin tasks in the agent Command Center with p and keep them in a shared Pinned group when supported by the server.

  12. New model

    GPT-6.1 Sol Ultrafast in Codex and ChatGPT Work

    Ultrafast mode speeds up token generation with GPT-6.1 Sol in Codex and ChatGPT Work. Ultrafast is available on Pro $500 and eligible Enterprise and Edu plans. Enterprise access is off by default; workspace owners must enable it. GPT-6.1 Sol Ultrafast supports inference residency in the United States and Europe (EEA + Switzerland).

  13. Codex app

    Codex app

    Performance improvements and bug fixes. Fixed Windows sandbox refresh failures after app updates. Fixed worktree creation and chat forking for WSL repositories whose paths conflicted with Windows directories. Kept the recent chats section collapsed when switching between chats. Fixed Remove from section so it removes a chat from its sidebar section without pinning it.

  14. Codex app

    ChatGPT for iOS

    Page previews now appear inline in responses. Added support for opening Codex task links directly on iOS. Redesigned the approval picker with clearer permission choices. Find plugins from a single Plugins entry in the composer's plus menu. Faster streaming in long threads, with fewer freezes. New tasks keep your selected computer while it reconnects or is offline. Improved worktree support so files and changes match the checkout used on desktop. Fixed task lists remaining empty after connecting. Smoother keyboard transitions when starting tasks and swiping back. Status updates no longer appear as questions that need an answer. Clearer manual pairing code entry, including support for pasting formatted codes.

  15. Codex CLI

    Codex CLI 0.161.0

    6 new6 fixes2 other

    GPT-6.1 Sol is now the default model in the bundled and Amazon Bedrock catalogs. Amazon Bedrock supports multi-agent V2 and Ultra reasoning on compatible models; Bedrock Mantle also accepts AWS GovCloud regions.

  16. Codex CLI

    Codex CLI 0.160.1

    1 fix

    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.

  17. Codex app

    ChatGPT for iOS

    New Home Screen widgets show recent tasks from your selected computers. Track remaining usage and reset times with Home Screen and Lock Screen widgets. Added a setting to keep the keyboard open after sending a message. Faster task list refresh when returning to the app, with existing task titles preserved. Fixed missing tasks when loading or scrolling through task lists. Smoother home screen, send, and keyboard transitions. Canceling a queued prompt returns recoverable text and attachments to the composer. Improved transcript stability when selecting text and loading older messages. Worktree creation now respects your computer's configured storage location.

  18. Codex app

    Codex app

    Added the option to move selected chats to a project at once. Performance improvements and bug fixes. Improved recovery when attaching managed worktrees to chats. Fixed large diffs appearing blank at some zoom levels. Improved retries after queued messages fail to send or chats fail to open.

  19. Codex CLI

    Codex CLI 0.160.0

    4 new6 fixes3 other

    Browse older tasks in the agent command center with a keyboard-accessible “Show more” action. Select transcript text and paste with middle-click in fullscreen mode on supported local Linux X11 terminals.

  20. Codex CLI

    Codex CLI 0.159.3

    1 new

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

  21. Codex app

    Codex app

    Performance improvements and bug fixes. Improved terminal startup in attached worktrees and fixed failures caused by unavailable worktree environment settings. Kept earlier answers visible when you send new instructions during a task. Fixed automatic scrolling and prevented keyboard navigation through messages from jumping back to the latest response. Improved startup recovery when you return to the app window.

  22. Codex CLI

    Codex CLI 0.159.0

    6 new6 fixes2 other

    Opt-in instant_interrupt lets new input steer Codex during model responses or long-running code-mode calls. New sessions get a compact welcome screen and consistent headers, with occasional tips during and after turns.

  23. Codex CLI

    Codex CLI 0.159.1

    1 new

    Added GPT-6.1 Sol as the default model in the bundled catalog and Amazon Bedrock Mantle and Runtime catalogs.

  24. Codex CLI

    Codex CLI 0.159.2

    1 fix

    Suppressed console windows flashing on Windows when Codex launches background processes and sandboxed commands.

  25. New model

    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 Astra. Consider it for repeated, long-running work across code, apps, and documents. Availability depends on your plan, client, and workspace settings. Use gpt-6.1-sol.

  26. Codex CLI

    Codex CLI 0.158.0

    5 new6 fixes

    Configure copy-on-select and right-click paste in the fullscreen TUI. Copied transcript selections now preserve Markdown formatting. Connect to MCP servers that require pre-registered OAuth client secrets, including through codex mcp add --oauth-client-secret.

  27. Codex CLI

    Codex CLI 0.157.1

    1 other

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

  28. Codex app

    macOS security update

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

  29. Codex CLI

    Codex CLI 0.157.0

    6 new6 fixes

    Added GPT-6 Sol and Luna, including Amazon Bedrock support and migration prompts for older models. Enabled fullscreen transcripts by default and added Shift-click to extend text selections.

  30. Codex app

    ChatGPT for iOS

    Redesigned home screen. New iPad split view keeps your task list beside the open task in landscape. Added support for browsing changes inside nested Git repositories. Side chats now carry over attachments, selected text, and review comments. Fixed replies appearing blank or incomplete when the next queued prompt starts. New tasks preserve your selected computer and better recognize project checkouts and worktrees. More reliable file links, with clearer loading feedback when opening files and new tasks. Clearer error messages explain why task history could not load and what to try next. Smoother animations when adding photos from the camera or Photo Library. Fixed pairing failures caused by an incorrect device clock and SSH connection issues on Mac and Linux.