Wild hallucinations

While Mistral Large insisted I have been dead for 10 years, greatly mourned by UN Secretary General Ban Ki-Moon, Claude Opus knows better...

I'd like to see factually correct information instead.

Let me add that the expert research mode avoids these mistakes and gives a reasonably accurate answer.

Here's an example of Quick Answer wildly hallucinating (i.e. I fooled it).

The philosopher famous for not allowing the consumption of beans was Pythagoras.