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Backend support

SD.Next supports two backends: Diffusers and Original.

  • Diffusers: Based on Hugging Face Diffusers. Supports all model families listed in this wiki and is the default backend for new installations.
  • Original: Based on the LDM reference implementation and extended by A1111. Compatible with most functionality and extensions written for A1111 SDWebUI. Supports SD 1.x and SD 2.x models.

All other model types, including SD-XL, LCM, Stable Cascade, PixArt, Playground, Segmind, and Kandinsky, require the Diffusers backend.