Alibaba PAI released MiniMax-H3-Fun-Controlnet-Union-2.0, a ControlNet-Union branch for MiniMax-H3 supporting 8 control conditions and video inpainting
Alibaba PAI released MiniMax-H3-Fun-Controlnet-Union-2.0 on Hugging Face, a ControlNet-Union branch for MiniMax-H3 supporting 8 control conditions and video inpainting. The checkpoint is about 13.5 GB and requires minimax_h3_control_inpaint_post_norm.yaml.
China context
- Outside China
- Open weights · huggingface.co
- Claims
- Company-reported; not yet independently evaluated
- For builders
- Builders outside China can download the checkpoint from Hugging Face and integrate it with MiniMax-H3 for controllable video generation and inpainting.
- For investors
- Investors should note Alibaba PAI's continued investment in open-weights video generation models, which may pressure competitors and expand the developer ecosystem.
Alibaba PAI released MiniMax-H3-Fun-Controlnet-Union-2.0 on Hugging Face. This model is a ControlNet-Union branch for MiniMax-H3, supporting 8 control conditions (Canny, Depth, HED, MLSD, Pose, Scribble, Layout, Gray) and video inpainting. It uses a denser control injection with 10 control blocks across 50 transformer blocks, guidance-distilled for guidance scale 1.0, and a post-norm inpainting recipe. The checkpoint is about 13.5 GB and must be used with the minimax_h3_control_inpaint_post_norm.yaml config.
The model expands control conditions from 5 to 8, adding Scribble, Layout, and Gray. It doubles control injection points from 5 to 10 blocks, improving structural adherence. Inpainting uses a post-norm recipe where masked pixels are zeroed after ImageNet normalization, improving blending. The control branch is guidance-distilled, requiring guidance scale 1.0 and one forward pass per step.
Developers outside China can now use a single checkpoint for 8 control conditions and video inpainting with MiniMax-H3, reducing the need for multiple specialized models and simplifying video-to-video generation workflows.
This release lowers the barrier for developers to implement controllable video generation and inpainting with MiniMax-H3, potentially reducing development time and compute costs by avoiding per-condition model switching.
Next signals to check: whether Alibaba PAI releases a full MiniMax-H3 base model with this control branch integrated, and whether the model is adopted in open-source video generation pipelines.