OpenAIs latest models, o3 and o4-mini, exhibit higher hallucination rates compared to earlier versions, with o4-mini reaching ...

According to OpenAI’s internal testing, the new o3 model hallucinated in 33% of cases on the company’s PersonQA benchmark. That’s roughly double the rate of previous models like o1 (16%) and o3-mini ...

It is capable of analyzing complex information with contextual nuance to draw logical conclusions with more accuracy than ever ... it ahead of Open AI o3-mini (14%), GPT-4.5 (6.4%), Claude ...

and DeepSeek R1 (8.6%), though falling short of OpenAI’s recently launched o4-mini (14.3%). The model also posted strong results on technical benchmarks like GPQA diamond (78.3%) and AIME ...

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