Large language models

GPT-5.5 Instant System Card

New ways to buy ChatGPT ads

OpenAI expands ChatGPT ads with a beta self-serve Ads Manager, CPC bidding, and enhanced measurement tools—built to protect privacy and keep conversations separate from ads.

Where the goblins came from

How goblin outputs spread in AI models: timeline, root cause, and fixes behind personality-driven quirks in GPT-5 behavior.

Granite 4.1 LLMs: How They’re Built

Our commitment to community safety

Learn how OpenAI protects community safety in ChatGPT through model safeguards, misuse detection, policy enforcement, and collaboration with safety experts.

OpenAI models, Codex, and Managed Agents come to AWS

OpenAI GPT models, Codex, and Managed Agents are now available on AWS, enabling enterprises to build secure AI in their AWS environments.

OpenAI available at FedRAMP Moderate

OpenAI is available at FedRAMP Moderate authorization for ChatGPT Enterprise and the OpenAI API, enabling secure AI adoption for U. S.

Introducing GPT-5.5

Introducing GPT-5. 5, our smartest model yet—faster, more capable, and built for complex tasks like coding, research, and data analysis across tools.

GPT-5.5 System Card

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.

Working with ChatGPT Codex

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

How to get started with ChatGPT Codex

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

Everyday work with ChatGPT Work

Learn practical ChatGPT Work workflows for recurring tasks, updates, research, planning, and team operations.

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.

How to use ChatGPT Work for everyday tasks

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

ChatGPT Codex settings

Learn how to configure Codex settings, including personalization, detail level, and permissions, to run tasks smoothly and customize your workflow.

How to Use Transformers.js in a Chrome Extension

GPT-5.5 Bio Bug Bounty

Explore the GPT-5. 5 Bio Bug Bounty: a red-teaming challenge to find universal jailbreaks for bio safety risks, with rewards up to $25,000.

Making ChatGPT better for clinicians

OpenAI makes ChatGPT for Clinicians free for verified U. S.

Introducing workspace agents in ChatGPT

Workspace agents in ChatGPT are Codex-powered agents that automate complex workflows, run in the cloud, and help teams scale work across tools securely.