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

OpenAI’s o3 and o4-mini models are available now to ChatGPT Plus, Pro, and Team users. Enterprise and education users will ...

OpenAI's reasoning AI models are getting better, but their hallucinating isn't, according to benchmark results.

Both o3 and o4-mini models, released earlier this week, are only available to paying ChatGPT users at the moment.

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

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

OpenAI introduced two new reasoning models this week: o3 and o4-mini. The company claims that these are its smartest AI ...

On Wednesday, OpenAI announced the release of two new models—o3 and o4-mini—that combine simulated reasoning capabilities ...

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

OpenAI unleashed a flurry of new ChatGPT variants over the week, each featuring interesting new features and very confusing ...