# Bringing Nunchaku 4-bit Diffusion Inference to Diffusers

DevFeed: [Bringing Nunchaku 4-bit Diffusion Inference to Diffusers](<https://devfeed.tech/articles/bringing-nunchaku-4-bit-diffusion-inference-to-diffusers-7368.md>)

Original publisher: [Read original article](<https://huggingface.co/blog/nunchaku-diffusers>)

Author: Pham Hong Vinh; Sayak Paul

Published: 2026-07-23T00:00:00Z

Content type: article

Language: en

Sources: [Hugging Face - Blog](<https://devfeed.tech/sources/hugging-face-blog.md>)

Topics: [diffusers](<https://devfeed.tech/topics/diffusers.md>), [Inference](<https://devfeed.tech/topics/inference.md>), [quantization](<https://devfeed.tech/topics/quantization.md>), [diffusion-transformers](<https://devfeed.tech/topics/diffusion-transformers.md>), [NVFP4](<https://devfeed.tech/topics/nvfp4.md>), [GPU](<https://devfeed.tech/topics/gpu.md>), [NCCL](<https://devfeed.tech/topics/nccl.md>)

Tags: [diffusers](<https://devfeed.tech/tags/diffusers.md>), [diffusion](<https://devfeed.tech/tags/diffusion.md>), [diffusion-transformers](<https://devfeed.tech/tags/diffusion-transformers.md>), [gpu](<https://devfeed.tech/tags/gpu.md>), [guide](<https://devfeed.tech/tags/guide.md>), [hardware](<https://devfeed.tech/tags/hardware.md>), [inference](<https://devfeed.tech/tags/inference.md>), [kernels](<https://devfeed.tech/tags/kernels.md>), [memory](<https://devfeed.tech/tags/memory.md>), [nvfp4](<https://devfeed.tech/tags/nvfp4.md>), [nvidia](<https://devfeed.tech/tags/nvidia.md>), [quantization](<https://devfeed.tech/tags/quantization.md>), [speed](<https://devfeed.tech/tags/speed.md>)

## AI overview

This article explains how Nunchaku brings 4-bit diffusion inference to Hugging Face Diffusers. It describes SVDQuant's W4A4 approach, integration of pre-quantized checkpoints without local CUDA compilation, and hardware requirements for NVFP4 and INT4 variants.

## Source excerpt

We're on a journey to advance and democratize artificial intelligence through open source and open science.