OpenAI delivered advanced ChatGPT reasoning models this month that are more capable than o1, but they also hallucinate more.

A discrepancy between first- and third-party benchmark results for OpenAI's o3 AI model is raising questions about the ...

The FrontierMath benchmark from Epoch AI tests generative models on difficult math problems. Find out how OpenAI’s o3 and ...

OpenAI ChatGPT o3 and o4-mini models can determine location information by looking at a photo - and yes, it can be fooled.

The rave reviews OpenAI's latest models have been winning come with an asterisk: Experts are also finding that they're ...

By OpenAI 's own testing, its newest reasoning models, o3 and o4 -mini, hallucinate significantly higher than o1.

Following the recent launch of a new family of GPT-4.1 models, OpenAI released o3 and o4-mini on Wednesday, the latest ...

Historically, each new generation of OpenAI's models has delivered incremental improvements in factual accuracy, with ...

Learn how OpenAI's o3 and o4 models are setting new standards in generative AI, empowering businesses, developers, and ...

OpenAI has finally released the full o3 reasoning model along with o4-mini. New models can use multiple tools inside ChatGPT ...

OpenAI touts o3 as a smart AI model with the ability to reason (meaning it can recursively check its answers before giving ...

PM EDT Now that the OpenAI livestream has ended, this article has been updated with the latest information about the o3 and ...