Introducing gpt-oss

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

Estimating worst case frontier risks of open weight LLMs

What we’re optimizing ChatGPT for

Figma uses AI to transform digital design

Introducing Stargate Norway

Three lessons for creating a sustainable AI advantage

Introducing study mode in ChatGPT

Resolving digital threats 100x faster with OpenAI

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

Announcing OpenAI DevDay 2025

Pioneering an AI clinical copilot with Penda Health