Codex Version History

This changelog tracks Codex releases across the CLI, desktop app, and IDE extension. For the full official changelog, see developers.openai.com/codex/changelog.

February 2026

Latest

GPT-5.3-Codex Announcement - February 5, 2026

Introducing GPT-5.3-Codex

The most capable agentic coding model to date for complex, real-world software engineering
Combines frontier coding performance of GPT-5.2-Codex with stronger reasoning and professional knowledge
Runs 25% faster for Codex users
Better collaboration while working — more frequent progress updates and real-time steering
Available across CLI, app, IDE extension, and Codex Cloud
Switch via codex --model gpt-5.3-codex or model selector in app/IDE

CLI v0.98.0 - February 5, 2026

GPT-5.3-Codex & Steer Mode Stable

Install: npm install -g @openai/codex@0.98.0

GPT-5.3-Codex support
Steer mode is now stable and enabled by default — Enter sends immediately during running tasks, Tab queues follow-up input
Fixed resumeThread() argument ordering in TypeScript SDK
Fixed model-instruction handling when changing models mid-conversation or resuming with a different model
Fixed remote compaction mismatch for token pre-estimation
Restored default assistant personality to Pragmatic

CLI v0.97.0 - February 5, 2026

Allow and Remember, Live Skills, Memory Plumbing

Install: npm install -g @openai/codex@0.97.0

Allow and remember — session-scoped option for MCP/App tool approvals, so repeated calls to the same tool auto-approve
Live skill updates — skill file changes picked up without restarting
/debug-config slash command to inspect effective configuration
Memory plumbing — initial API client and local persistence for thread memory summaries
Configurable log_dir for log redirection
Mixed text and image content in dynamic tool outputs for app-server integrations
Bug fixes: TUI jitter in apps/connectors picker, working status indicator restored, cloud requirements reliability

Codex App v260205 - February 5, 2026

GPT-5.3-Codex & Mid-Turn Steering

Support for GPT-5.3-Codex
Mid-turn steering — submit a message while Codex is working to direct its behavior
Attach or drop any file type
App flickering fix

CLI v0.96.0 - February 4, 2026

Thread Compact API & Unified Exec

Install: npm install -g @openai/codex@0.96.0

thread/compact async trigger in v2 app-server API for client-controlled compaction
WebSocket-side rate limit signaling via codex.rate_limits event
unified_exec enabled on all non-Windows platforms
Constrained requirement values include source provenance for /debug-config
Bug fixes: Esc handling in request_user_input, thread listing from state DB, dynamic tool injection transactions

Codex App v260204 - February 4, 2026

Zed & TextMate Support

Added Zed and TextMate as options to open files and folders
PDF preview in the review panel
Performance improvements

CLI v0.95.0 - February 4, 2026

Codex App Launcher, Personal Skills, Parallel Shell

Install: npm install -g @openai/codex@0.95.0

codex app <path> on macOS — launch Codex Desktop from CLI (auto-downloads DMG if missing)
Personal skills loaded from ~/.agents/skills (with ~/.codex/skills compatibility)
Remote skill listing and download via app-server APIs
Parallel shell tools — shell-related tools can run in parallel for improved throughput
/plan accepts inline prompt arguments and pasted images
Shell executions receive CODEX_THREAD_ID for active session detection
Vendored Bubblewrap (bwrap) sandbox groundwork for Linux
Bug fixes: Git command safety hardened, resume/thread listing reliability, sandbox mode consistency, codex exec hang after interrupt

Codex App Launch - February 2, 2026

Introducing the Codex Desktop App

macOS desktop interface for running agent threads in parallel
Project sidebar, thread list, and review pane
Built-in worktree support for isolated changes
Voice dictation and built-in Git tooling
Multitask across multiple projects simultaneously

Notable Feature Introductions Timeline

May 2025: Codex CLI initial release as open-source tool
June-August 2025: MCP integration, GitHub Actions, sandbox improvements
September 2025: Skills system, configuration overhaul
October 2025: IDE extension launch, app-server API
November 2025: Cloud environments (Codex Cloud), Slack integration
December 2025: Linear integration, worktree support
January 2026: Enhanced review mode, automation improvements
February 2026: GPT-5.3-Codex, Codex Desktop App, steer mode stable, personal skills, parallel shell tools, memory plumbing

Staying Updated

Official Changelog Full changelog at developers.openai.com/codex/changelog

GitHub Releases Follow CLI releases on GitHub

Install Latest CLI Run: npm install -g @openai/codex@latest