I can use Claude as much as I want at work, and I get hallucinations every day. I'm not even doing anything all that fancy with it, but I get frequent hallucinatory behavior regardless of the model or how I go about things.

Every single time I have asked Claude or another "top tier" offering a detailed question about something I'm an expert in, there's something wrong in the answer. Usually many things.

Do you actually look at what comes out?