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

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

The latest AI model from OpenAI achieved an “impressive leap in performance” but it still hasn’t demonstrated what experts ...

CEO Sam Altman closed out the 12 Days of OpenAI event Friday with a first look at the company's upcoming o3 reasoning model.

The new o3 models did so well on a prominent benchmark that some immediately questioned whether OpenAI had in fact achieved ...

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

OpenAI said on Friday it was testing new reasoning AI models, o3 and o3 mini, in a sign of growing competition with rivals ...

For 12 days straight, OpenAI unveiled 'new things, big and small.' Here's what's new today and a full round-up of all the ...

CNBC's Kate Rooney reports on OpenAI's final day of 'Shipmas.' The biggest one-hit wonder from each year since the 1960s ...

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

OpenAI announced a new o3 reasoning model and it has become the first AI model to crack the hallowed ARC-AGI benchmark.

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