A breach at data analytics provider Mixpanel Inc. has compromised the account information of some OpenAI Group PBC users. The ChatGPT developer disclosed the incident on Wednesday. Mixpanel’s namesake ...

Elon Musk, under cross-examination in an Oakland federal courtroom, acknowledged that his AI company xAI used OpenAI’s models ...

The admission in federal court is a rare acknowledgment of the use of distillation techniques as AI firms compete to build ...

OpenAI launches GPT-5.5, its first fully retrained base model since GPT-4.5, targeting enterprise with agentic coding, computer use, and knowledge work ...

OpenAI is capping off a busy week of announcements with the release of GPT-5.5, its latest model upgrade for ChatGPT and Codex. The company calls its new model “a new class of i ...

ChatGPT went from novelty to necessity in less than two years. It is now part of how you work, learn, write, code and search. OpenAI has said the service has roughly 800 million weekly active users, ...

OpenAI has won major concessions from its largest shareholder, Microsoft, that will allow it to sell products on AWS, while ...

In a pre-release briefing, Open AI president and cofounder Greg Brockman said that GPT-5.5 is “way more intuitive to use,” ...

OpenAI has announced the release of GPT-5.5, the latest upgrade to the company's family of models powering its ChatGPT and ...

OpenAI has released GPT-5.5, its most capable and intuitive AI model yet, designed to handle complex, multi-step tasks with minimal human input. The model shows significant improvements in agentic ...

GPT-5.1 speeds up coding with adaptive and no-reasoning modes. New prompt caching cuts API costs for embedded app developers. New tools make AI agents more capable inside modern IDEs. OpenAI is back ...

First, we got the new GPT-5.3, an “instant” model optimized for fast, accurate responses. Then, OpenAI released GPT-5.4 two days later. This is a “thinking” model optimized for deep analytical work. I ...