Introducing GPT-5 for developers

The best model for coding and agentic tasks.

GPT-5 and the new era of work

GPT-5 is OpenAI’s most advanced model—transforming enterprise AI, automation, and workforce productivity in the new era of intelligent work.

Providing ChatGPT to the Entire U.S. Federal Workforce

Estimating worst case frontier risks of open weight LLMs

In this paper, we study the worst-case frontier risks of releasing gpt-oss. We introduce malicious fine-tuning (MFT), where we attempt to elicit maximum capabilities by fine-tuning gpt-oss to be as capable as possible in two domains: biology and cybersecurity.

Open Weights and AI for All

AI’s next frontier isn’t just about capability—it’s about who gets to use it. Our mission to put AI in the hands of as many people as possible is what drives us. Today’s release of our most capable open-weights models is a major step forward that makes advanced AI more open, flexible, and accessible worldwide.

gpt-oss-120b & gpt-oss-20b Model Card

We introduce gpt-oss-120b and gpt-oss-20b, two open-weight reasoning models available under the Apache 2.0 license and our gpt-oss usage policy.

Introducing gpt-oss

gpt-oss-120b and gpt-oss-20b push the frontier of open-weight reasoning models

What we’re optimizing ChatGPT for

Figma uses AI to transform digital design

A conversation with David Kossnick, Head of AI Products at Figma.

Introducing Stargate Norway

We’re launching Stargate Norway—OpenAI’s first AI data center initiative in Europe under our OpenAI for Countries program. Stargate is OpenAI’s overarching infrastructure platform and is a critical part of our long-term vision to deliver the benefits of AI to everyone.

Three lessons for creating a sustainable AI advantage

By experimenting early, measuring rigorously, and building an architecture that evolves with each model, Intercom created a scalable AI platform that ships new capabilities in days, not quarters.

Introducing study mode in ChatGPT

A new way to learn in ChatGPT that offers step by step guidance instead of quick answers.

Resolving digital threats 100x faster with OpenAI

Model ML is helping financial firms rebuild with AI from the ground up

A conversation with Chaz Englander, CEO & Co-founder of Model ML.

Announcing OpenAI DevDay 2025

We’re hosting our third annual OpenAI DevDay on October 6, 2025 at Fort Mason in San Francisco.

Pioneering an AI clinical copilot with Penda Health

OpenAI’s new economic analysis

Stargate advances with 4.5 GW partnership with Oracle

New data center capacity will power jobs, growth, and AI that benefits more people.

OpenAI and UK Government announce strategic partnership to deliver AI-driven growth

OpenAI partners with the UK Government to boost AI adoption, drive economic growth, and enhance public services for a thriving AI ecosystem in the UK.

AI as the greatest source of empowerment for all

I’ve always considered myself a pragmatic technologist—someone who loves technology not for its own sake, but for the direct impact it can have on people’s lives. That’s what makes this job so exciting, since I believe AI will unlock more opportunities for more people than any other technology in history. If we get this right, AI can give everyone more power than ever.

A $50 million fund to build with communities

OpenAI is launching an initial $50 million fund that supports nonprofit and community organizations, informed by the independent OpenAI Nonprofit Commission report

Invideo AI uses OpenAI models to create videos 10x faster

Built on GPT-4.1, image generation in the API, and text-to-speech models, invideo AI turns OpenAI models into a full video production team.

ChatGPT agent System Card

ChatGPT agent System Card: OpenAI’s agentic model unites research, browser automation, and code tools with safeguards under the Preparedness Framework.

Introducing ChatGPT agent

ChatGPT now thinks and acts, proactively choosing from a toolbox of agentic skills to complete tasks for you using its own computer.

Agent bio bug bounty call

Testing universal jailbreaks for biorisks in ChatGPT Agent

Statement from the OpenAI Board of Directors on the Nonprofit Commission Report

OpenAI nonprofit jam

Bringing together 1,000 nonprofit leaders across the US to build with AI

Intellectual freedom by design

ChatGPT is designed to be useful, trustworthy, and adaptable so you can make it your own.

The EU Code of Practice and future of AI in Europe

OpenAI joins the EU Code of Practice, advancing responsible AI while partnering with European governments to drive innovation, infrastructure, and economic growth.