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

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

OpenAI says its latest models, o3 and o4-mini, are its most powerful yet. However, research shows the models also hallucinate ...

OpenAI's latest AI models tend to make things up — or "hallucinate" — substantially more than earlier versions.

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

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

If you’ve used an AI model, you’ve most likely seen it hallucinate. This is when the model produces incorrect or misleading ...

OpenAI's reasoning models are billed as more ... to "spend more time thinking before they respond," as described in the o1 announcement. Rather than largely relying on stochastic methods to ...

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's o3 and o4-mini models for ChatGPT have arrived.

Comparing AI reasoning abilities reveals OpenAI's o1 model surpasses DeepSeek's R1 in generating accurate, sentence-level ...