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Qwen3.5-4B-DFlash-GGUF

Name: Qwen3.5-4B-DFlash-GGUF
Author: Anbeeld

by Anbeeld · source Hugging Face · updated 2026-08-29

apache-2.0364 MB~1 GB RAMsource aliveunlabeled

GGUF quantizations of z-lab DFlash draft model for Qwen 3.5 4B.

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Source and license

Source: https://huggingface.co/Anbeeld/Qwen3.5-4B-DFlash-GGUF
License: apache-2.0
Requirements: about 1 GB of RAM, 364 MB on disk (estimate: suggested file size × 1.15 + 0.5 GB; a real measurement comes with lsh models). Runs with llama.cpp.
Tags: transformers gguf qwen3 feature-extraction safetensors dflash speculative-decoding speculative-decoding-draft block-diffusion draft-model diffusion-language-model efficiency qwen qwen3.5 sglang text-generation

Numbers

2,079 downloads on Hugging Face
3 likes
license apache-2.0
0.4 GB for qwen35-4b-dflash-Q4_K_M.gguf
327,838 npm downloads a week for node-llama-cpp
latest node-llama-cpp@3.22.1

Numbers as of 2026-10-02 21:00 UTC, from the source API.

Summary

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Files

file	quant	size
`qwen35-4b-dflash-Q2_K.gguf`	Q2_K	232 MB
`qwen35-4b-dflash-Q3_K_M.gguf`	Q3_K_M	299 MB
`qwen35-4b-dflash-Q4_K_M.gguf`	Q4_K_M	364 MB
`qwen35-4b-dflash-Q5_K_M.gguf`	Q5_K_M	433 MB
`qwen35-4b-dflash-Q6_K.gguf`	Q6_K	507 MB
`qwen35-4b-dflash-Q8_0.gguf`	Q8_0	653 MB
`qwen35-4b-dflash-bf16.gguf`	BF16	1.2 GB

From the source README

Qwen 3.5 4B DFlash GGUF

GGUF quantizations of z-lab DFlash draft model for Qwen 3.5 4B.

Use with BeeLlama.cpp, a llama.cpp fork with advanced quantization features.

Qwen3.5-4B-DFlash

Paper | Github | Blog

This DFlash draft model is a joint retrain from Z-Lab and Modal, trained with 40k sequence length and sliding-window attention for improved long-context performance. It is mirrored across the following Hugging Face repositories:

`z-lab/Qwen3.5-4B-DFlash`
`modal-labs/Qwen3.5-4B-DFlash`

This repository contains a DFlash draft model for `Qwen/Qwen3.5-4B`. It is not a standalone language model. It is intended to be paired with the target model in a speculative decoding server.

DFlash uses a lightweight block diffusion draft model to propose multiple tokens in parallel. The target model verifies those proposals, improving serving throughput while preserving the target model's output distribution.

Quick Start

Installation

SGLang

Card id model:hf:Anbeeld/Qwen3.5-4B-DFlash-GGUF · collected 2026-10-02 21:00 UTC · JSON