AI Research Atlas

Stable Diffusion XL 1.0

Stability AI · 26 July 2023

SDXL 1.0 ships with open weights, a 3.5B-parameter base plus refiner and native 1024x1024 output, and runs on 8GB consumer GPUs.

UNet about 3x larger than earlier Stable Diffusion, a second text encoder, multi-aspect-ratio training and an optional refiner model for image-to-image polish. 6.6B parameters for the base+refiner ensemble. Released under the CreativeML OpenRAIL++-M licence on GitHub, Clipdrop, AWS and DreamStudio.

Date
Wednesday, 26 July 2023
Lab
Stability AI
Kind
open-weights
Access
open weights

Figures

MeasureValueMeasured by
Parameters (base)3.5B
6.6B for the base+refiner ensemble
company
Minimum GPU memory8GB VRAM
consumer-GPU claim
company

Paper arXiv 2307.01952 (2023-07-04, Podell, Rombach et al.) preceded the 1.0 release; SDXL 0.9 was a research-only preview.

Sources

  1. stability.ai/news-updates/stable-diffusion-sdxl-1-announcement
  2. arxiv.org/abs/2307.01952

This record was checked against its sources on 6 October 2026. How we check