So far what I've seen from AI is that it lies and lies and lies. It lies about history. It lies about science. It lies about politics. It lies about case law. It lies about programming libraries. Maybe this will all be fixed some day, or maybe it will just get worse. Until then the only thing I would trust it is about something in which their is no wrong answer.
I never ask it things I don't know. I don't think that's really what's it's useful for. It's really good at combining words though. So it can write a better sentence than I could. Better in a sense that it's easier for others to understand what my thoughts are if I feed them in as input. Since they were my thoughts originally I can spot the bullshit pretty fast.