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MiniMax-H3-Fun-Controlnet-Union-w4a8
berryber09/MiniMax-H3-Fun-Controlnet-Union-w4a8
MiniMax-H3-Fun-Controlnet-Union-w4a8 is a machine learning model from berryber09. Use it for the machine learning task on the model card, and read the license before you ship it in a product. It is set up for minimax-h3. The card lists the license as other.
W4A8 quantization of the MiniMax-H3 Fun ControlNet-Union model patch for ComfyUI.
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.safetensors1.5 GB · 100%
At a glance
- Library
- minimax-h3
- License
- other
- Access
- Public
- Created
- Sep 10, 2026
- Updated
- Sep 10, 2026
- SHA
- 4709bcbb
Base models
Model card
From the Hugging Face model README
MiniMax-H3 Fun ControlNet-Union, pruned, W4A8
W4A8 quantization of the MiniMax-H3 Fun ControlNet-Union model patch for ComfyUI.
| File | minimax_h3_fun_controlnet_union_pruned_w4a8.safetensors |
| Size | 1.45 GB (bf16 pruned build: 4.22 GB, int8_convrot build: 2.3 GB) |
| Source | alibaba-pai/MiniMax-H3-Fun-Controlnet-Union, via the pruned bf16 build in Comfy-Org/MiniMax-H3 |
| sha256 | fe822947667d7625e0c622edc583952628f9ccf749a7444af11b2eb9747f3bdc |
Quantization
- Format:
asym_w4a8_int8(4-bit asymmetric weights, int8 activations), ConvRot rotation with group size 256, weight group size 16. - Applied to the 20 2D projection layers of the 5 control blocks. Norms, embeddings, biases and the AdaLN basis stay in bf16/fp32.
- Calibration-free (reference format). Quantization metadata is stored in the safetensors header (
_quantization_metadata,comfy_wxa8), the layout ComfyUI reads natively.
Usage (ComfyUI)
- Put the file in
models/model_patches/. - Load it with
ModelPatchLoader, apply withMiniMaxH3FunControlNetApply(see the bundled templatevideo_minimax_h3_fun_controlnet_union). - Requires ComfyUI 0.35.0 or newer. This file carries native quantization metadata; the Comfy-Org int8_convrot build uses the legacy scale-tensor format and needs Comfy-Org/ComfyUI#16221 on 0.35.0.
Notes
- Loads and builds all 5 control blocks. Output quality relative to the bf16 and int8_convrot builds has not been measured.
- License follows the source model (MiniMax-H3 Community License Agreement).
- Library
- minimax-h3
- License
- other
- Created
- Sep 10, 2026
- Updated
- Sep 10, 2026