These animations are great. I have learnt so many things from LLM's, cross checking things is easy enough, but the hallucinations are really not much of a thing any more (in my experience). When you deep dive on things it does seem to get very wordy sometimes (this is claude anyway). Its taught me flutter and dart without opening a book (with the occasional reference page), set me straight on monads finally, refined some linear algebra, various bits of history, and philosophy, I'm learning spinors at the moment. Is some of it wrong - maybe, but it's not like my brain is 100% accurate any way, and when I need accuracy I look up references. It is fantastic getting a broad overview of a subject you don't know or a precis of a current subject, and its so much faster.
It's not close to zero. https://artificialanalysis.ai/?omniscience=omniscience-hallu....
Hallucinations bring to question what you think you've learned. That's going to cost long-term if you labor under mis-apprehensions until you maybe figure out you learned something wrong.