I tried kagi for a while. Did you ever notice that kagi image search is just a wrapper around google image search? The results are exactly the same, just in a slightly randomized order.
I didn't use google's image search for a long time so I don't know that. But I think kagi pays to use google's data as one of their source. So it's possible the image search results are the same. However the different order/ranking is what separated kagi and google.
