They're quite different. Krita is more about digital painting and GIMP is more about photo processing. If you're familiar with CSP and Photoshop, Krita is more like CSP and GIMP is more like Photoshop.
Specifically, Krita has a much more sophisticated brush engine.
Even for light photo editing and making memes and such, I much prefer Krita over Gimp. I find the interface more straightforward to use. (And in terms of features I prefer Photopea over both, but unfortunately it's not free software.)
They're quite different. Krita is more about digital painting and GIMP is more about photo processing. If you're familiar with CSP and Photoshop, Krita is more like CSP and GIMP is more like Photoshop.
Specifically, Krita has a much more sophisticated brush engine.