Seems like they have to do a lot of work to increase the relevance of the search results.

Query "ahrefs founder name"

Yep: https://yep.com/web?q=ahrefs+founder+name

Google: https://www.google.com/search?q=ahrefs+founder+name

The expected result is Ahrefs about page but Yep is not even close and I agree with some HN comments Google results are worse today because of tools like Ahrefs, not sure I would trust their search engine. I would rather stay with kagi.com/google.com