Wikipedia > Slopipedia.
xAI's Grokipedia is 100% more biased, given who controls it and its known tendency to manipulate results. Finally, there are lots of cases where it completely fails. And I didn't even get to the "porn" stuff. Hell, even it's creator says it's trash.
I just skimmed both Wikipedia and Grokipedia's articles on remigration. Wikipedia has effectively no positives or reasons why people would want remigration listed at all. Almost the entire page is criticism, including a large section of tenuous links to nazism. Grokipedia lists BOTH positives and criticisms of the policy. Which one is designed to push an agenda and which is there to inform and let people make up their own minds?
Larry Sanger (one of the Wikipedia cofounders) was just blocked by Wikipedia indefinitely for trying to balance the ideology back out.