AltXL Version 6 of this model is a merge of version 5 with RealVisXL by SG_161222 and a number of LORAs. One of the main goals is compatibility with the standard SDXL refiner, so it can be used as a drop-in replacement for the SDXL base model. It's very versatile and from my experience generates significantly better results than base SDXL, especially for characters. It's capable of some NSFW.