Suchir Balaji, a former OpenAI engineer and whistleblower who helped train the artificial intelligence systems behind ChatGPT ...

Welcome back to Week in Review. This week, we’re looking at OpenAI’s last — and biggest — announcement from its “12 Days of ...

OpenAI saved its biggest announcement for the last day of its 12-day "shipmas" event. On Friday, the company unveiled o3, the ...

Altman claimed that Musk's opposition to OpenAI's potential for-profit transition comes from his desire to remain in control ...

OpenAI’s efforts to develop its next major model, GPT-5, are running behind schedule, with results that don’t yet justify the ...

ChatGPT-maker OpenAI has launched o3 and o3 mini reasoning AI model to tackle complex challenges. According to CEO Sam Altman ...

For the last day of ship-mas, OpenAI previewed a new set of frontier “reasoning” models dubbed o3 and o3-mini. The Verge ...

Most notably, there’s co-founder Elon Musk, who now runs rival startup xAI, and is in the midst of a heated legal battle with ...

The artificial intelligence start-up said the new system, OpenAI o3, outperformed leading A.I. technologies on tests that ...

Reasoning models are supposed to fact-check themselves by producing a step-by-step plan to find a correct answer.

A day after Google announced its first model capable of reasoning over problems, OpenAI has upped the stakes with an improved ...

The o3-mini variant, also announced Friday, includes an adaptive thinking time feature, offering low, medium, and high ...