ComfyUI-nunchaku

What it does

A ComfyUI plugin for Nunchaku, an inference engine for 4-bit models quantised with SVDQuant, which cuts VRAM requirements enough that models previously out of reach become runnable, and speeds up generation along the way. Quantisation is a trade — output can differ from the full-precision original — and GPU compatibility is specific, so check the support matrix first. Commercial use follows the underlying model's licence, not this plugin's. Apache-2.0.

Summary based on the project's own description. The Japanese page has a fuller beginner guide: setup difficulty, what to prepare, and a step-by-step start.

Screenshots & visuals

Before you start

• Setup difficultySome setup needed
• Command lineRequired
• API keyNot required
• Sends data onlineYes

Judged automatically from the project's own metadata. Always confirm on the official page.

ComfyUI-nunchaku FAQ

Is ComfyUI-nunchaku free?

Yes. It runs on your own machine, so there is no usage-based cost either.

Do I need to install anything or write code to use ComfyUI-nunchaku?

It needs the command line. If you are not comfortable typing commands, expect to get stuck during setup.

Does ComfyUI-nunchaku work on a phone?

No. It needs a computer.

Can I use ComfyUI-nunchaku commercially?

The licence is Apache-2.0, which permits commercial use. Conditions such as keeping the copyright notice still apply, so read the licence text before shipping it inside something.

How it compares

The conditions that decide whether you can actually use it, side by side.

"Sends data out" means your input is uploaded to someone's server. Pick "No" when the material cannot leave your organisation.

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