Qwen3.8 27B Uncensored — GGUF

A collection of GGUF quantizations of Qwen3.8 27B Uncensored, prepared for use with llama.cpp and other GGUF-compatible inference engines.

The goal of this repository is to make multiple quantization levels publicly available so users can compare quality, memory usage, inference speed, and compression across different quantization formats.

Status: Active quantization and benchmarking project. Additional quantizations and benchmark results will be added over time.

Model Information

• Architecture: Qwen3.8 27B
• Parameter count: ~27B
• Format: GGUF
• Original precision: F16
• Quantization: Multiple llama.cpp quantization formats
• Primary inference engine: llama.cpp
• Repository type: Community GGUF quantizations

Available Models

Additional IQ/imatrix-based variants may be added as the project progresses.

Note: File sizes are approximate. Actual sizes depend on tensor composition and the exact model/quantizer version.

Recommended Quantization

For most users, start with:

Q4_K_M

model-q4km.gguf

This provides a strong balance between:

• Model quality
• Memory requirements
• Inference speed
• Disk size

The Q4_K_M version produced from the F16 source is approximately 16 GiB.

If your hardware has more memory available, consider Q5_K_M, Q6_K, or Q8_0.

If memory is limited, Q3/Q2 variants may be useful, although quality degradation becomes increasingly noticeable at lower bitrates.

Quantization Method

The quantizations are generated from the original F16 GGUF rather than repeatedly quantizing an already-quantized model.

Conceptually:

F16 GGUF
   │
   ├── Q8_0
   ├── Q6_K
   ├── Q5_K_M
   ├── Q5_K_S
   ├── Q4_K_M
   ├── Q4_K_S
   ├── Q3_K_L
   ├── Q3_K_M
   ├── Q3_K_S
   └── Q2_K

This repository uses llama.cpp for GGUF quantization.

Example: Running with llama.cpp

Install/build llama.cpp:

git clone https://github.com/ggml-org/llama.cpp
cd llama.cpp
cmake -B build
cmake --build build --config Release -j

Then run a model:

./build/bin/llama-cli \
    -m model-q4km.gguf \
    -p "Hello! Explain what you can do."

For a server:

./build/bin/llama-server \
    -m model-q4km.gguf \
    --host 0.0.0.0 \
    --port 8080

The exact command-line options may vary with your installed version of llama.cpp.

Choosing a Quant

A simple rule of thumb:

More VRAM/RAM
      │
      ▼
    F16
    Q8_0
    Q6_K
    Q5_K_M
    Q4_K_M  ← Recommended starting point
    Q3_K_M
    Q2_K
      │
      ▼
Less VRAM/RAM

The best quantization depends on your hardware and workload.

For a fair comparison, users are encouraged to test the same:

• Prompt
• Context length
• GPU offload configuration
• Number of GPU layers
• Batch size
• Sampling parameters

when comparing variants.

Benchmarking

Benchmarking is an ongoing part of this project.

Future benchmark results will compare:

• Model size
• RAM usage
• VRAM usage
• Prompt processing speed
• Token generation speed
• Context length
• Output quality
• Quantization degradation

Benchmark results will be added here as they are measured.

Important

No quality or performance ranking should be considered authoritative until it has been experimentally measured.

Quantization Details

The initial Q4_K_M quantization was generated from the F16 source using llama.cpp.

Source model size:

~52,115 MiB

Q4_K_M output:

~16,021 MiB

The reported quantization density was approximately:

4.92 BPW

This corresponds to roughly a 69% reduction in model storage compared with the original F16 GGUF.

Intended Use

These GGUF files are intended for:

• Local LLM inference
• llama.cpp
• GGUF-compatible applications
• Hardware/inference benchmarking
• Quantization experiments
• Comparing memory/performance tradeoffs

Limitations

Quantization is inherently lossy.

Lower-bit quantizations generally reduce memory requirements but can introduce greater quality degradation.

Results can also vary depending on:

• Prompt type
• Context length
• Sampling configuration
• Inference engine
• Hardware
• Quantization method
• Calibration/imatrix data

Therefore, users should evaluate the quantization that best fits their particular workload.

Disclaimer

This repository contains community-generated GGUF quantizations.

The original model's license, terms of use, safety policies, and attribution requirements remain applicable. Users should review the original model documentation and license before using or redistributing these files.

This repository does not claim ownership of the underlying model.

Credits

Original Model

Qwen3.8 27B Uncensored

Please refer to the original model release for:

• Model architecture
• Training information
• License
• Intended use
• Safety considerations
• Original model documentation

Quantization

Quantizations generated using:

llama.cpp

https://github.com/ggml-org/llama.cpp

Contributing

If you test one of the quantizations, useful feedback includes:

• Quantization used
• Hardware
• RAM/VRAM
• Context length
• Tokens/second
• Prompt processing speed
• Backend/inference engine
• Observed quality differences

Pull requests and benchmark contributions are welcome.

Changelog

2026-08-17

• Added F16 GGUF
• Added Q4_K_M GGUF
• Began generating additional quantization variants
• Started public benchmarking/quantization comparison project

More quantizations and benchmark results will be added as testing progresses.