Lumix-4B
Lumix-4B is a compact, vision-capable coding and reasoning model from Blackfrost, distributed as GGUF quantizations for llama.cpp and Ollama. It is a fine-tune of Qwen3.5-4B, tuned to drive the Shadow coding agent well above its size.
- Base: Qwen/Qwen3.5-4B (GGUF architecture
qwen35) - Parameters: ~4B
- Modalities: text + vision (image input via the bundled
mmproj) - Context: long-context, agentic coding — one clean tool call at a time, look → act → verify
Files
| File | Quant | Notes |
|---|---|---|
Lumix-4B-Q3_K_M.gguf |
Q3_K_M | smallest |
Lumix-4B-Q4_K_M.gguf |
Q4_K_M | recommended |
Lumix-4B-Q5_K_M.gguf |
Q5_K_M | |
Lumix-4B-Q6_K.gguf |
Q6_K | |
Lumix-4B-Q8_0.gguf |
Q8_0 | near-lossless |
Lumix-4B-f16.gguf |
F16 | full precision |
Lumix-4B-mmproj.gguf |
— | vision projector (pair with any quant for image input) |
Usage
llama.cpp
llama-cli -hf Blackfrost-AI/Lumix-4B:Q4_K_M
# vision: also pass --mmproj Lumix-4B-mmproj.gguf and an --image
Ollama
ollama run hf.co/Blackfrost-AI/Lumix-4B:Q4_K_M
License
Released under the Apache-2.0 license.