comfyui
h3-studio Tool
Local front end for MiniMax H3 built on ComfyUI 0.30.0 or newer, with a VRAM meter, idle GPU release and a service setup so the video model hands the card back to other workloads. Its notes document H3 needing roughly 15.5 GB in the NVFP4 build, which is the practical ceiling on a 16 GB card.
ComfyUI-SolAttn-H3 Tool
A ComfyUI custom node that wires NVIDIA's training-free Sol-Attn sparse attention into the native MiniMax-H3 video path using public ModelPatcher APIs, so it drops in without modifying any ComfyUI core files. Keeps a prefix sink exact and sparsifies the remaining attention via a tunable threshold, with the gain growing as sequence length grows.
10S-Comfy-nodes (LTX Tiled Sampler) Tool
A drop-in replacement for ComfyUI's SamplerCustomAdvanced that fixes LTX 2.5's broad colour smearing by sampling in spatial tiles, keeping each tile inside the model's training token count instead of running a 2x-upscaled latent, then stitching with cosine-Hann overlap blending. Actively maintained with external contributions.