Ask HN: What's your experience with AI-based code review tools?

I've seen a lot of AI code review tools hitting the market, and I'm curious to hear from people who have tried them out.

Do they speed up reviews? How?

Do you still need human reviewers, or can you directly land code that the AI says passes?

Do they lead to higher quality code? Do they catch important enough things that the review is worth it, or is it mostly minor things?