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license: other
license_name: minimax-h3-community-license-agreement
license_link: https://huggingface.co/MiniMaxAI/MiniMax-H3/blob/main/LICENSE
tags:
  - comfyui
  - diffusion-single-file
base_model:
  - MiniMaxAI/MiniMax-H3
  - FastVideo/FastVideo-FastH3-8-Step-V2

FastVideo FastH3 V2 NVFP4

Repackaged model files for ComfyUI.

Original model repository: https://huggingface.co/FastVideo/FastVideo-FastH3-8-Step-V2

FastH3 V2 with its transformer quantized to NVFP4, for NVIDIA Blackwell GPUs: RTX 50 series, RTX PRO 6000 and DGX Spark. It is built from fastvideo_fasth3_8step_v2_pruned_bf16.safetensors in FastVideo/FastVideo-FastH3-Comfy, which also has the BF16 and INT8 builds for other GPUs.

Use the FastVideo FastH3: Text to Video template (ComfyUI 0.36.0 or later) and select fastvideo_fasth3_8step_v2_pruned_nvfp4.safetensors (13.6 GB) in its UNETLoader. Keep the template's sampler settings: 8 steps, res_multistep, simple, and the MiniMaxH3SigmaShift node at 10 (video) and 3 (audio).

Place the files in the following folders:

📂 ComfyUI/
└── 📂 models/
    ├── 📂 diffusion_models/
    │   └── fastvideo_fasth3_8step_v2_pruned_nvfp4.safetensors
    ├── 📂 text_encoders/
    │   ├── qwen3vl_32b_minimax_h3_bf16.safetensors
    │   ├── qwen3vl_32b_minimax_h3_int8_convrot.safetensors
    │   └── qwen3vl_32b_minimax_h3_nvfp4_awq.safetensors
    ├── 📂 vae/
    │   ├── minimax_h3_audio_vae_fp32.safetensors
    │   ├── minimax_h3_video_vae_fp16.safetensors
    │   └── minimax_h3_video_vae_int8_convrot.safetensors