As always, nowadays one source in the web isn't enough for an deeper research, with or without AI. You find the whole human knowledge in the web, but hidden between 80% BS, conspiranoic sites, stupid influencers, cat images/vids, porn, hentai and other crap. Wikipedia is fine, but also with a grain of salt, good to take also a look on the sources of it's articles, apart there are also dozends of Wikipedia alternatives, which, depending of the theme are also good for certain researches.
- https://wikispooks.com/wiki/Main_Page
- https://wikiindex.org/w/Welcome
- https://libregamewiki.org/Main_Page (Wiki of OpenSource games)
- https://justapedia.org/Main_Page
- https://www.encyclopedia.com/
- https://encyclosearch.org/ (Search in 65 Encyclopedias)
- https://encyclopediaofmath.org/wiki/Main_Page
- https://www.wikipathways.org/ (biologic pathways)
- https://priam.softr.io/ (Ancient history) etc..
Apart of this it's also recommend to take a look on websites, like Wolphram Alpha, publications of universities and scientific centers.