Nunchaku-Qwen-Image-EDIT-2511

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License & Attribution

These are quantized derivative weights of Qwen/Qwen-Image-Edit-2511 (Qwen-Image-Edit-2511).

• Modifications: the original weights were quantized (e.g. W4A4 / FP4 / INT4 / FP8) and repackaged for the QuantFunc inference engine — a "modification" under Apache-2.0 §4(b).
• License: Apache License 2.0 (inherited from the base model), included as LICENSE. Upstream copyright and attribution notices are retained.
• This repository is not affiliated with or endorsed by the upstream model authors.
• Text/vision encoder: the bundled Qwen2.5-VL-7B text/vision encoder is licensed under the Apache License 2.0 (as distributed with Qwen/Qwen-Image-Edit-2511).

Disclaimer: "Nunchaku" / "SVDQuant" name the quantization method/format (the open-source SVDQuant work by MIT HAN Lab, Apache-2.0). This repository is an independent re-quantization and is not affiliated with, sponsored by, or endorsed by MIT HAN Lab or the Nunchaku project. Official Nunchaku releases are under the nunchaku-ai / nunchaku-tech namespaces.

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QuantFunc

<div align="center" style="margin-top: 50px;"> <img src="assets/logo.webp" width="300" alt="Logo"> </div> <p align="center"> 🤗 <a href="https://huggingface.co/QuantFunc">Hugging Face</a> &nbsp;|&nbsp; 🤖 <a href="https://www.modelscope.cn/profile/QuantFunc">ModelScope</a> &nbsp;|&nbsp; 💻 <a href="https://github.com/RealJonathanYip/ComfyUI-QuantFunc">GitHub</a> &nbsp;|&nbsp; 💬 <a href="#wechat">WeChat (微信)</a> &nbsp;|&nbsp; 🎮 <a href="https://discord.gg/jCp9TpFWcn">Discord</a> </p>

⚡ Qwen-Image-Edit-2511 — SVDQ (Nunchaku) pre-quantized image editing. Reference-based edits at 2x–11x with the QuantFunc plugin.

Offline-quantized Qwen-Image-Edit-2511 image-editing checkpoints in best-quality / balanced / ultimate-speed variants (INT4 & FP4), with a 4-step LoRA workflow for ComfyUI.

Powered by the QuantFunc ComfyUI plugin — the fastest diffusion inference engine:

• 🚀 2x–11x speedup over standard BF16/FP16 Python pipelines (pre-exported → even faster loading).
• ⚙️ Native C++/CUDA (libquantfunc.so / quantfunc.dll) with zero Python model dependencies.
• 🧩 Dual engine (SVDQ offline + Lighting runtime 4-bit), zero-cost LoRA stacking, reference-image editing & inpainting.
• 🟢 Full GPU coverage — RTX 20/30/40/50 · A100/H100/H200/B100/B200/GB300 · RTX 6000 Ada / PRO Blackwell (CUDA 12 & 13); native FP4 on Blackwell.

👉 Install the plugin: https://github.com/RealJonathanYip/ComfyUI-QuantFunc

Introduction

We are excited to share our latest model series based on <strong>nunchaku + qwen-image-edit-2511</strong> quantization. These models are carefully optimized to maintain high-quality output while significantly improving inference speed and efficiency. <strong>All models are 100% compatible with the nunchaku-comfyui plugin</strong> and can be used directly in ComfyUI.

Model Checkpoints

4 steps workflow

Here’s a <a href="https://huggingface.co/QuantFunc/Nunchaku-Qwen-Image-EDIT-2511/tree/main">workflow</a> example of integrating 4-step LoRA in ComfyUI. If you don’t need 4-step LoRA, simply remove the LoRA node. <img src="assets/workflow_demo_edit.png" alt="work flow" style="max-width: 800px;">

Coming Soon

If you encounter any issues during use, feel free to join our community for feedback:

• Join our Discord server
• Scan the QR code below to join our WeChat group

We will add support for build-in lora and wan 2.2 next step, stay turned.

<div align="center" id="wechat"> <img src="https://raw.githubusercontent.com/RealJonathanYip/ComfyUI-QuantFunc/main/assets/WeChat.jpg" alt="WeChat Group" style="max-width: 300px;"> </div>