In training the models, OpenAI used “reinforcement learning”. How does this method help AI models make better decisions when ...

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

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

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

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

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

OpenAI’s newest LLM, o3, is facing scrutiny after independent tests found it solved a far fewer number of tough math problems ...

OpenAI is streamlining its AI model lineup, retiring popular models like GPT-4 and GPT-4.5, all in anticipation of the launch ...

OpenAI is launching o3 and o4-mini, new AI reasoning models designed to pause and work through questions before responding.

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

OpenAI launches groundbreaking o3 and o4-mini AI models that can manipulate and reason with images, representing a major ...

OpenAI is releasing two new AI reasoning models today: o3, which the company calls its “most powerful reasoning model,” and ...