I’ve personally found that Google’s AI mode is surprisingly capable and almost absurdly fast, although the hallucination rate is somewhat proportionally higher too to match its seeming over-responsiveness. Which means Perplexity in effect doesn’t have anything to differentiate it.

I don't notice it's hallucinations (in the sense of making up answers) so much as where it's simply wrong. For example, earlier in the week, I was working with product X, and since the original vendor of X doesn't really support it any more, I asked "who else sells product X under their own brand", and Google AI quickly told me that noone else sells product X, that it was full of proprietary tech and quickly devolved into replaying product X marketing spiel. Except...I knew that at least one other vendor did sell product X, only difference is paint job. After too much "no, you're wrong..." and "Yes, you're right...", it finally coughed up that there were 2 other vendors that sold it. And if I didn't already know about another vendor, I probably would still be putzing around with poor support and little documentation.