LLMs & Chatbots

Scaling accounting capacity with OpenAI

Built with OpenAI o3, o3-Pro, GPT-4.1, and GPT-5, Basis’ AI agents help accou...

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

We introduce gpt-oss-120b and gpt-oss-20b, two open-weight reasoning models a...

What we’re optimizing ChatGPT for

We build ChatGPT to help you thrive in all the ways you want. Learn how we're...

Free ChatGPT for transitioning U.S. servicemembers a...

OpenAI is offering U.S. servicemembers and veterans within 12 months of retir...

How we built OWL, the new architecture behind our Ch...

A deep dive into OWL, the new architecture powering ChatGPT Atlas—decoupling ...

Strengthening ChatGPT’s responses in sensitive conve...

OpenAI collaborated with 170+ mental health experts to improve ChatGPT’s abil...

Work smarter with your company knowledge in ChatGPT

Company knowledge brings context from your apps into ChatGPT for answers spec...

Introducing ChatGPT Atlas, the browser with ChatGPT ...

ChatGPT Atlas, the browser with ChatGPT built it. Get instant answers, summar...

Detecting and reducing scheming in AI models

Apollo Research and OpenAI developed evaluations for hidden misalignment (“sc...

Introducing study mode in ChatGPT

Introducing study mode in ChatGPT, a new learning experience that helps you w...

Resolving digital threats 100x faster with OpenAI

Discover how Outtake uses GPT-4.1 and OpenAI o3 to power AI agents that detec...

ChatGPT agent System Card

ChatGPT agent System Card: OpenAI’s agentic model unites research, browser au...

Understanding the Evolution of Advanced Coding Assis...

The latest developments in large language models emphasize structured documen...

Building more helpful ChatGPT experiences for everyone

We’re partnering with experts, strengthening protections for teens with paren...

Collective alignment: public input on our Model Spec

OpenAI surveyed over 1,000 people worldwide on how AI should behave and compa...

Introducing ChatGPT agent

Introducing ChatGPT agent: it thinks and acts, using tools to complete tasks ...