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

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

However, according to OpenAI’s internal tests, these new o3 and o4-mini reasoning models also hallucinate significantly more ...

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

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

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

OpenAI's new AI models are hallucinating more than their predecessor, as per an internal testing report released by the ...

Flytek on Monday boasted that its Xinghuo X1 reasoning model had matched OpenAI o1 and DeepSeek R1 in overall performance.

With a ChatGPT Plus, Team or Enterprise account you now have access to 100 messages a week with the ChatGPT-o3 model and a ...

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

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