MiniMax H3 Turbo LoRA: 4-Step FL2V Distillation for ComfyUI

ComfyUI Wikinews

Lightx2v and ModelTC distill MiniMax H3 into a 4-step FL2V Turbo LoRA, cutting sampling from ~20 steps to 4 with a ComfyUI conversion and demo Spaces.

The Lightx2v team and ModelTC released a 4-step Turbo LoRA for MiniMax H3, distilling the video model's first-last-frame-to-video (FL2V) generation from roughly 20 sampling steps down to 4 (Hugging Face, GitHub). The LoRA, about 1.3 GB, is an early preview: v0.1 focuses on FL2V quality, with a Ref2V distillation already on the roadmap.

MiniMax H3 Turbo LoRA example frame

A frame from the author's example output at 4 steps

What's in the release

  • Weights: minimax_h3_fl2v_turbo_4step_v0.1.safetensors on Hugging Face, distilled from the MiniMax-H3 base model
  • Inference code: the ModelTC repository provides batch MiniMax-H3 inference plus NFE/LoRA comparisons against the base model at 50 NFE
  • Demo Spaces: akhaliq's MiniMax-H3-Turbo-Lora Space and an official-org Space let you try the LoRA without local hardware
  • Roadmap: improve FL2V visual details and overall quality, then develop a Ref2V-based distillation

The release notes label v0.1 a preview: visual details still need improvement, and an updated version is in development.

ComfyUI usage

ComfyUI does not need a custom node for this LoRA. Kijai published a ComfyUI-compatible conversion in Kijai/MiniMax-H3_comfy (minimax_h3_fl2v_lightx2v_turbo_4step_v0.1_comfy.safetensors, plus a resized bf16 variant) within an hour of the release. Drop the file into models/loras/, load the base H3 checkpoint, and apply the LoRA at 0.75 strength with 4 steps using an er_sde or sa_solver sampler, per Kijai's test notes.

The official MiniMax H3 text-to-video workflow template is a good starting point; insert the Turbo LoRA between the model loader and the sampler and switch to the 4-step settings above.

Note: the authors observed some differences between Diffusers and ComfyUI inference results (audio sounded more natural in Diffusers). An audio bug in the ComfyUI path was fixed in a nightly update. For reproduction matching the paper results, follow the ModelTC inference script.

Example output shared by the authors in the release discussion

Availability

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