I use it to summarize stuff sometimes, and I honestly spend almost as much time checking it's accurate than I would if I had just read and summarized.
It is useful for 'What does this contain?' so I can see if I need to read something. Or rewording something I have made a pig's ear out of.
I wouldn't trust it for anything important.
The most important thing to do if you do use AI is to not ask leading questions. Keep them simple and direct