Tools

An open-source spec for orchestration: Symphony

Learn how Symphony, an open-source spec for Codex orchestration, turns issue tra...

Automate repetitive tasks with Amazon Quick Flows

This post shows you how to build your first AI-powered workflow, using Amazon Qu...

Choco automates food distribution with AI agents

How Choco used OpenAI APIs to streamline food distribution, boost productivity, ...

The next phase of the Microsoft OpenAI partnership

OpenAI and Microsoft announce an amended agreement that simplifies the partnersh...

Our principles

Our mission is to ensure that AGI benefits all of humanity. Sam Altman shares fi...

Building Workforce AI Agents with Visier and Amazon Quick

In this post, we show how connecting the Visier Workforce AI platform with Amazo...

OpenAI’s New GPT-5.5 Powers Codex on NVIDIA Infrastruct...

AI agents have revolutionized developer workflows, and their next frontier is kn...

GPT-5.5 Bio Bug Bounty

Explore the GPT-5.5 Bio Bug Bounty: a red-teaming challenge to find universal ja...

What is Codex?

Learn how Codex helps you go beyond chat by automating tasks, connecting tools, ...

Introducing GPT-5.5

Introducing GPT-5.5, our smartest model yet—faster, more capable, and built for ...

Plugins and skills

Learn how to use Codex plugins and skills to connect tools, access data, and fol...

Automations

Learn how to automate tasks in Codex using schedules and triggers to create repo...

Working with Codex

Learn how to set up your Codex workspace, create threads and projects, manage fi...

Codex settings

Learn how to configure Codex settings, including personalization, detail level, ...

How to get started with Codex

Learn how to get started with Codex by setting up projects, creating threads, an...

GPT-5.5 System Card