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sdxl-base-mlx
SceneWorks/sdxl-base-mlx
sdxl-base-mlx is a text-to-image model from SceneWorks. Use it when you need an image from a text prompt. It is set up for mlx-gen. The card lists the license as openrail++.
Pre-quantized, packed-load tiers of stabilityai/stable-diffusion-xl-base-1.0 for on-device Apple-Silicon inference with SceneWorks / mlx-gen (the sdxl generator). Each tier is a self-contained diffusers turnkey snapsh…
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Updated Jul 1, 2026
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At a glance
- Task
- Text-to-Image
- Library
- mlx-gen
- License
- openrail++
- Access
- Public
- Created
- Jul 1, 2026
- Updated
- Jul 1, 2026
- SHA
- 36699bb8
Base models
Model card
From the Hugging Face model README
Stable Diffusion XL base 1.0 — MLX pre-quantized tiers
Pre-quantized, packed-load tiers of
stabilityai/stable-diffusion-xl-base-1.0
for on-device Apple-Silicon inference with SceneWorks / mlx-gen
(the sdxl generator). Each tier is a self-contained diffusers turnkey snapshot (U-Net + both
CLIP text encoders + VAE + tokenizers + scheduler + model_index.json) that loads directly — no
in-app quantization pass, no dense transient.
Dual CLIP-L + OpenCLIP-bigG text encoders, real classifier-free guidance + negative prompt, sdxl-family LoRA support. ~30 steps at guidance 7.0, native 1024×1024.
Tiers
| dir | precision | what's quantized |
|---|---|---|
q4/ (default) | group-wise affine Q4, group size 64 | U-Net Linears + both CLIP encoders |
q8/ | group-wise affine Q8, group size 64 | U-Net Linears + both CLIP encoders |
bf16/ | dense (full-precision master) | nothing — verbatim source mirror |
The VAE stays dense (f32) in every tier (the SDXL VAE is int8/fp16-unstable). Convolutions,
GroupNorms, and the CLIP token/position embeddings also stay dense; only the true Linear projections
are packed. Quantization is byte-identical to mlx-gen's load-time nn.quantize (bf16 cast, group
64).
Usage
use mlx_gen::{LoadSpec, WeightsSource, Quant};
let spec = LoadSpec::new(WeightsSource::Dir("…/sdxl-base-mlx/q4".into())).with_quant(Quant::Q4);
let g = mlx_gen::load("sdxl", &spec)?;
License
openrail++ (CreativeML Open RAIL++-M) — inherited from the source model
stabilityai/stable-diffusion-xl-base-1.0. See LICENSE.
- Task
- Text-to-Image
- Library
- mlx-gen
- License
- openrail++
- Created
- Jul 1, 2026
- Updated
- Jul 1, 2026