SD3下载地址：https://huggingface.co/stabilityai/stable-diffusion-3-medium/tree/main

https://huggingface.co/spaces/stabilityai/stable-diffusion-3-medium

comfyui 教程：

深度测评：SD3模型表现如何？实用教程助你玩转Stable Diffusion 3 ，最强SD3模型使用攻略，附ComfyUI实操SD3模型到底如何？StableDiffusion3全面评测！-CSDN博客

测试代码：

import torch
from diffusers import StableDiffusion3Pipeline

pipe = StableDiffusion3Pipeline.from_pretrained("stabilityai/stable-diffusion-3-medium-diffusers", torch_dtype=torch.float16)
pipe = pipe.to("cuda")

image = pipe(
    "A cat holding a sign that says hello world",
    negative_prompt="",
    num_inference_steps=28,
    guidance_scale=7.0,
).images[0]
image