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MiniMax H3 Day-0 Support in ComfyUI: Open Weights, Native Audio, and 2K Video

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Why This Matters

MiniMax H3 introduces a groundbreaking open-weights video model capable of generating high-quality 2K videos with stereo audio, all in a single pass. Its multimodal understanding and editing features make it a versatile tool for creators, streamlining video production and enabling more dynamic, controlled content creation. This advancement signifies a major step forward in AI-driven multimedia generation, impacting both industry workflows and consumer content creation.

Key Takeaways

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.

Try on Comfy Cloud

Model Highlights

Text-to-video — prompt only.

Image-to-video — bring an image to life.

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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