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Public story · 2026-08-04 · high
ComfyUI's day-0 build runs on an RTX 3060 after cutting memory needs 66 percent, to a 42.5GB minimum.
Why now: ComfyUI added support the same day MiniMax shipped the weights, skipping the usual lag between an open release and tool integration.
MiniMax released H3, an open-weights video model, with ComfyUI support live the same day, per the ComfyUI Blog.
H3 generates stereo audio synced to the video instead of dubbing it in afterward, the first open-weights model to pair audio and video natively. A 66 percent cut in memory requirements brought the smallest variant to 42.5GB, small enough for an RTX 3060 instead of enterprise-grade GPUs.
The model takes text, image, video, or audio as input and outputs clips up to 15 seconds long at up to 2K resolution. It supports first-and-last-frame control: you set the start and end frames and the model fills in the motion between them. It also does motion transfer from a reference clip.
Weights are posted at Comfy-Org/MiniMax-H3 and require ComfyUI 0.30.0 or newer.
Dubbed audio on generated video tends to drift out of sync with mouth movement and sound effects. Generating it inside the model, on the same timeline as the frames, avoids that failure mode. Test it against dubbed output before trusting the resolution number alone.
Each link below shares sources, entities, or timing with this story.
Ollama supports MiniMax / Shared entity: RTX / Earlier coverage / Tension
Linked by a graph relationship (Ollama supports MiniMax); both cover RTX; earlier RTX coverage from 2026-04-23.
Vercel AI Gateway supports MiniMax / Shared entities / Shared topic / Earlier coverage
Linked by a graph relationship (Vercel AI Gateway supports MiniMax); both cover MiniMax, MiniMax H3, Weights; overlapping topics (audio, clip, stereo, video).
MiniMax competes with Anthropic / Shared entity: Weights / Earlier coverage
Linked by a graph relationship (MiniMax competes with Anthropic); both cover Weights; earlier Weights coverage from 2026-07-21.
MiniMax competes with Anthropic / Shared entity: MiniMax / Earlier coverage
Linked by a graph relationship (MiniMax competes with Anthropic); both cover MiniMax; earlier MiniMax coverage from 2026-06-25.
Linked by a graph relationship (MiniMax competes with Anthropic); both cover MiniMax; earlier MiniMax coverage from 2026-03-17.
Linked by a graph relationship (MiniMax competes with Anthropic); both cover MiniMax; earlier MiniMax coverage from 2026-03-04.
Linked by a graph relationship (MiniMax competes with Anthropic); both cover MiniMax; earlier MiniMax coverage from 2026-03-01.
Linked by a graph relationship (MiniMax competes with Anthropic); both cover MiniMax; earlier MiniMax coverage from 2026-02-27.