v1.2.61 - Minimax H3 open weights

Summary

MiniMax H3 open weights now run locally on the Inline Core engine, as four nodes on the canvas. Video and its 32 kHz stereo soundtrack come out of a single denoising pass, so a take is one MP4 with the audio already in it.

Four nodes

• Text to Video, prompt only
• Image to Video, a still into motion
• First and Last Frame, pin either end or both
• Reference to Video, up to nine images, three clips and three audio clips, addressed by position in the prompt

How it runs

• Loads the original bf16 checkpoints. Nothing repacked, so a new build needs no code change.
• The modulation weights, 40 percent of the transformer, are factorised at load: 66.3 GB down to 40.3 GB.
• The conditioner steps off the card once the prompt is encoded, so the denoiser keeps the card for the whole denoise.

Measured on an L40S

• A 10 second clip at 960x544 takes about 7.2 minutes
• Peak VRAM 38.9 GB
• 46.7 GB of system RAM that cannot be reclaimed, so plan on 64 GB

Licence

Inline Studio ships no model weights. The H3 weights are licensed separately by MiniMax under a community licence that excludes several territories. Read it before you build on it.

Full writeup: https://inlinestudio.art/minimax-h3-open-weights

What's Changed

• Minimax H3 core nodes by @imprsnst in #24

Full Changelog: v1.2.6...v1.2.61