The Easel app on iMessage has been out for a bit, where users can create photorealistic quality AI avatars, with friends in the scene together, all from the iMessage. Unlike normal stickers, friends can tap on an Easel image, and remix to put themselves in the scene. Wondering about the quality once Apple's Genmoji comes out!
Easel on iMessage has had this experience plus more for a while, including multiplayer, where you can have two people in one scene together with photorealistic imagery: https://apps.apple.com/us/app/easel-ai/id6448734086