I've never used Grokipedia, just Grok. It must be just for searching tweets right now. Elon Musk said he would build Grokipedia to allow facts from all of the banned right-leaning sites to be used as sources. Currently, Wikipedia uses only left wing sources like NY Times, WashPo, Cnn, etc. Right wing sites like Fox News, NY Post and Breitbart are blacklisted. It'll be interesting to see what he does.

Wikipedia is good for more factual searches. Its not going to go away, but now it'll have competition. That's a good thing. I read about them fighting over allowing the awful story about the murder of Iryna Zarutska, the Ukrainian girl. That's terrible.