MiniMax H3 Day-0 Support in ComfyUI: Open Weights, Native Audio, and 2K Video
MiniMax has released its third-generation video model, H3, which features open weights and native support in ComfyUI. The model is capable of generating 2K video with integrated stereo audio and allows for advanced control through reference frames and motion transfer.
Why it matters
The release of a high-performance, open-weights video model with native audio integration represents a significant advancement in generative AI accessibility and multi-modal capabilities.
Rob and Alexis Rolland Aug 03, 2026 4 2 Share MiniMax H3 dropped today with open weights, and it’s natively supported in ComfyUI as of this morning. Day zero.
This is a next-generation open-weights video model. Feed it text, images, video, or audio and it generates video with real stereo sound, up to 2K, up to 15 seconds a clip. It is MiniMax’s third-generation video model, following Hailuo 01 and Hailuo 02, and the first the company has released with open weights.
First-and-last-frame — control the opening frame, the closing frame, or both, and let the model fill in the rest.
Reference-to-video — supply reference images, video, or audio and carry a subject, a motion, or a voice through the clip.
Output runs to 2K and up to 15 seconds. Audio is generated with the video in the same pass, in stereo, not bolted on afterward.
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