What is Codex?

What is ChatGPT Codex?

Learn how ChatGPT Codex helps you go beyond chat by automating tasks, connecting tools, and producing real outputs like docs and dashboards.

Introducing upgrades to Codex

Codex just got faster, more reliable, and better at real-time collaboration and tackling tasks independently anywhere you develop—whether via the terminal, IDE, web, or even your phone.

Introducing Codex

Addendum to o3 and o4-mini system card: Codex

Codex is a cloud-based coding agent. Codex is powered by codex-1, a version of OpenAI o3 optimized for software engineering.

How to get started with Codex

Learn how to get started with Codex by setting up projects, creating threads, and completing your first tasks with step-by-step guidance.

How to use Codex for everyday work

Explore 10 practical ChatGPT Codex use cases to automate tasks, create deliverables, and turn real inputs into outputs across tools, files, and workflows.

Codex is becoming a productivity tool for everyone

The Next Era of Knowledge Work report explores how Codex is transforming productivity through AI-powered research, data analysis, workflow automation, and content creation.

Codex is now generally available

OpenAI Codex is now generally available with powerful new features for developers: a Slack integration, Codex SDK, and admin tools like usage dashboards and workspace management—making Codex easier to use and manage at scale.

Working with Codex

Learn how to set up your Codex workspace, create threads and projects, manage files, and start completing tasks with step-by-step guidance.

Codex for every role, tool, and workflow

Discover new Codex plugins, sites, and annotations that help analysts, marketers, designers, investors, and other teams get more done with AI.

Work with Codex from anywhere

Use Codex anywhere with the ChatGPT mobile app. Monitor, steer, and approve coding tasks in real time across devices and remote environments.

Introducing the Codex app

Introducing the Codex app for macOS—a command center for AI coding and software development with multiple agents, parallel workflows, and long-running tasks.