AtomicChat / Qwen3.5-4B-GGUF

huggingface.co
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24-hour runs: 455
7-day runs: 2.9K
30-day runs: 3.4K
Model's Last Updated: July 23 2026
text-generation

Introduction of Qwen3.5-4B-GGUF

Model Details of Qwen3.5-4B-GGUF


Qwen3.5 4B

Qwen3.5 4B , self-quantized to GGUF by Atomic Chat . Built straight from Qwen's original weights with a per-tensor importance matrix. Runs fully offline.

Highlights
  • Efficient hybrid architecture combining Gated Delta Networks with sparse Mixture-of-Experts for high-throughput inference at low latency and cost.
  • Unified vision-language foundation trained with early fusion on multimodal tokens (these GGUF quants cover the text path).
  • 262,144-token native context , extensible up to ~1,010,000 tokens.
  • Global linguistic coverage : Qwen reports support for 201 languages and dialects.
  • Thinking and instruct modes , each with its own recommended sampling presets.
  • Full quant ladder with an importance matrix on every quant over calibration_datav3 .

These GGUFs are self-quantized from the original weights , not a repack. The importance matrix keeps low-bit quants closer to the full-precision model.

Always pass --jinja so the Qwen3.5 4B chat template is applied. Without it the model can emit malformed turns.

Model Overview
Property Value
Base model Qwen/Qwen3.5-4B
Total parameters 4B
Layers 32
Context length 262,144 native, extensible up to ~1,010,000
Architecture Causal LM with vision encoder; hybrid Gated DeltaNet + Gated Attention, hidden dim 2560, trained with MTP
This repo GGUF quants (imatrix), text path
Qwen3.5 4B benchmark scores

Scores are Qwen's published results for the base Qwen/Qwen3.5-4B . Quantization preserves the large majority of this; Q4_K_M and up sit within a point or two of full precision.

Choosing a quant
Quant Size Notes
Q2_K 1.9 GB Smallest. Minimal RAM, clear quality drop.
IQ3_M 2.2 GB Beats Q3 at similar size thanks to imatrix. Best low-RAM pick.
Q3_K_M 2.3 GB Low quality but usable.
Q3_K_L 2.4 GB A step above Q3_K_M.
IQ4_XS 2.5 GB Excellent quality for size. Recommended low-bit.
Q4_K_S 2.6 GB Compact Q4, fast.
Q4_K_M 2.7 GB Recommended default. Best balance of size, speed and quality.
UD-Q4_K_XL 2.9 GB Dynamic. Embeddings and output kept at Q8_0 for higher quality at a Q4 footprint.
Q5_K_S 3.0 GB Higher quality.
Q5_K_M 3.1 GB Higher quality, low loss.
Q6_K 3.5 GB Near lossless.
Q8_0 4.5 GB Effectively lossless, reference quality.

Pick the largest file that fits your (V)RAM with room for context. Q4_K_M or UD-Q4_K_XL is the sweet spot for most setups; Q6_K or Q8_0 for maximum fidelity.

Get started

Run Qwen3.5 4B locally with:

  • Atomic Chat : the easiest path. Open the app, search AtomicChat/qwen35-4b-GGUF , pick a quant, hit Use this model .
  • llama.cpp: llama-server -hf AtomicChat/qwen35-4b-GGUF:Q4_K_M --jinja -c 8192
  • Ollama: ollama run hf.co/AtomicChat/qwen35-4b-GGUF:Q4_K_M
  • LM Studio / Jan: search the repo id, download any quant.
Best practices
Parameter Value
temperature 0.7
top_p 0.8
top_k 20
min_p 0.0
presence_penalty 1.5
repetition_penalty 1.0

Qwen's recommended Instruct (non-thinking) settings. Thinking mode for general tasks: temperature=1.0, top_p=0.95, top_k=20, min_p=0.0, presence_penalty=1.5, repetition_penalty=1.0.

Run in llama.cpp
git clone https://github.com/ggerganov/llama.cpp
cmake llama.cpp -B llama.cpp/build -DBUILD_SHARED_LIBS=OFF -DGGML_CUDA=ON
cmake --build llama.cpp/build --config Release -j --target llama-cli llama-server
./llama.cpp/build/bin/llama-server \
    -hf AtomicChat/qwen35-4b-GGUF:UD-Q4_K_XL \
    --jinja -ngl 99 -c 8192 -fa on
How these were made
  1. Download Qwen/Qwen3.5-4B (original weights).
  2. Convert to f16 GGUF with llama.cpp .
  3. Build an importance matrix over calibration_datav3 (100 chunks).
  4. Quantize the full ladder with --imatrix .
  5. UD-Q4_K_XL additionally pins the token-embedding and output tensors to Q8_0 .
License

Released by Qwen under the Apache 2.0 license. Quantized by Atomic Chat.

Runs of AtomicChat Qwen3.5-4B-GGUF on huggingface.co

8.2K
Total runs
455
24-hour runs
1.5K
3-day runs
2.9K
7-day runs
3.4K
30-day runs

More Information About Qwen3.5-4B-GGUF huggingface.co Model

More Qwen3.5-4B-GGUF license Visit here:

https://choosealicense.com/licenses/apache-2.0

Qwen3.5-4B-GGUF huggingface.co

Qwen3.5-4B-GGUF huggingface.co is an AI model on huggingface.co that provides Qwen3.5-4B-GGUF's model effect (), which can be used instantly with this AtomicChat Qwen3.5-4B-GGUF model. huggingface.co supports a free trial of the Qwen3.5-4B-GGUF model, and also provides paid use of the Qwen3.5-4B-GGUF. Support call Qwen3.5-4B-GGUF model through api, including Node.js, Python, http.

Qwen3.5-4B-GGUF huggingface.co Url

https://huggingface.co/AtomicChat/Qwen3.5-4B-GGUF

AtomicChat Qwen3.5-4B-GGUF online free

Qwen3.5-4B-GGUF huggingface.co is an online trial and call api platform, which integrates Qwen3.5-4B-GGUF's modeling effects, including api services, and provides a free online trial of Qwen3.5-4B-GGUF, you can try Qwen3.5-4B-GGUF online for free by clicking the link below.

AtomicChat Qwen3.5-4B-GGUF online free url in huggingface.co:

https://huggingface.co/AtomicChat/Qwen3.5-4B-GGUF

Qwen3.5-4B-GGUF install

Qwen3.5-4B-GGUF is an open source model from GitHub that offers a free installation service, and any user can find Qwen3.5-4B-GGUF on GitHub to install. At the same time, huggingface.co provides the effect of Qwen3.5-4B-GGUF install, users can directly use Qwen3.5-4B-GGUF installed effect in huggingface.co for debugging and trial. It also supports api for free installation.

Qwen3.5-4B-GGUF install url in huggingface.co:

https://huggingface.co/AtomicChat/Qwen3.5-4B-GGUF

Url of Qwen3.5-4B-GGUF

Qwen3.5-4B-GGUF huggingface.co Url

Provider of Qwen3.5-4B-GGUF huggingface.co

AtomicChat
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