Their 'Research' AI is pretty decent too. I can get to the same ends eventually, but I can't read and digest 25 different pages and then launch another 10 follow-up searches in 15 seconds. It's summarizing and not simply inferencing so the hallucination rate is acceptably low and it also cites the sources so you can click a footnote to fact-check any important details.
I self-host most things, but I can't self host a search engine. I much prefer paying monthly than having to fight the eternal battle against tracking and ads.