How to use from the
Use from the
llama-cpp-python library
# !pip install llama-cpp-python

from llama_cpp import Llama

llm = Llama.from_pretrained(
	repo_id="AtomicChat/Qwen3.5-9B-GGUF",
	filename="",
)
llm.create_chat_completion(
	messages = [
		{
			"role": "user",
			"content": "What is the capital of France?"
		}
	]
)
Atomic Chat Join Discord GitHub

Qwen3.5 9B

Qwen3.5 9B, 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: Gated Delta Networks combined 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).
  • Global linguistic coverage: Qwen reports support for 201 languages and dialects.
  • Scaled reinforcement learning across large agent environments with progressively complex task distributions.
  • 262,144-token native context, extensible up to ~1,010,000 tokens.
  • 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 9B chat template is applied. Without it the model can emit malformed turns.

Model Overview

Property Value
Base model Qwen/Qwen3.5-9B
Total parameters 9B
Layers 32
Context length 262,144 native, extensible up to ~1,010,000
Architecture Causal LM with vision encoder; hybrid Gated DeltaNet + Gated Attention + sparse MoE
This repo GGUF quants (imatrix), text path
Qwen3.5 9B benchmark scores

Scores are Qwen's published results for the base Qwen/Qwen3.5-9B. 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
Q4_K_M 5.6 GB Recommended default. Best balance of size, speed and quality.
UD-Q4_K_XL 6.4 GB Dynamic. Embeddings and output kept at Q8_0 for higher quality at a Q4 footprint.
Q5_K_M 6.5 GB Higher quality, low loss.
Q6_K 7.4 GB Near lossless.
Q8_0 9.5 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 9B locally with:

  • Atomic Chat: the easiest path. Open the app, search AtomicChat/qwen35-9b-GGUF, pick a quant, hit Use this model.
  • llama.cpp: llama-server -hf AtomicChat/qwen35-9b-GGUF:Q4_K_M --jinja -c 8192
  • Ollama: ollama run hf.co/AtomicChat/qwen35-9b-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/qwen35-9b-GGUF:UD-Q4_K_XL \
    --jinja -ngl 99 -c 8192 -fa on

How these were made

  1. Download Qwen/Qwen3.5-9B (original weights).
  2. Convert to f16 GGUF with llama.cpp.
  3. Build an importance matrix over calibration_datav3.
  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.

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