How to use from
Pi
Start the llama.cpp server
# Install llama.cpp:
brew install llama.cpp
# Start a local OpenAI-compatible server:
llama serve -hf prithivMLmods/Qwen3.5-4B-DS-v4-Flash-v1.0-GGUF:
Configure the model in Pi
# Install Pi:
npm install -g @mariozechner/pi-coding-agent
# Add to ~/.pi/agent/models.json:
{
  "providers": {
    "llama-cpp": {
      "baseUrl": "http://localhost:8080/v1",
      "api": "openai-completions",
      "apiKey": "none",
      "models": [
        {
          "id": "prithivMLmods/Qwen3.5-4B-DS-v4-Flash-v1.0-GGUF:"
        }
      ]
    }
  }
}
Run Pi
# Start Pi in your project directory:
pi
Quick Links

Qwen3.5-4B-DS-v4-Flash-v1.0-GGUF

Qwen3.5-4B-DS-v4-Flash-v1.0 is a reasoning-capable 4B-parameter language model built on top of Qwen/Qwen3.5-4B. The model was trained using a single-stage long-context training pipeline with approximately 4.5K long-context DeepSeek V4 Flash reasoning traces, along with additional high-quality reasoning traces, to improve long-form reasoning, mathematical problem solving, scientific analysis, coding, and instruction-following capabilities.

This model is an experimental release and may generate unexpected behaviors or reasoning artifacts in certain scenarios.

Model Files

File Name Quant Type File Size File Link
Qwen3.5-4B-DS-v4-Flash-v1.0.BF16.gguf BF16 8.42 GB Download
Qwen3.5-4B-DS-v4-Flash-v1.0.F16.gguf F16 8.42 GB Download
Qwen3.5-4B-DS-v4-Flash-v1.0.Q3_K_L.gguf Q3_K_L 2.42 GB Download
Qwen3.5-4B-DS-v4-Flash-v1.0.Q3_K_M.gguf Q3_K_M 2.26 GB Download
Qwen3.5-4B-DS-v4-Flash-v1.0.Q3_K_S.gguf Q3_K_S 2.07 GB Download
Qwen3.5-4B-DS-v4-Flash-v1.0.Q4_K_M.gguf Q4_K_M 2.71 GB Download
Qwen3.5-4B-DS-v4-Flash-v1.0.Q4_K_S.gguf Q4_K_S 2.56 GB Download
Qwen3.5-4B-DS-v4-Flash-v1.0.Q5_K_M.gguf Q5_K_M 3.07 GB Download
Qwen3.5-4B-DS-v4-Flash-v1.0.Q5_K_S.gguf Q5_K_S 2.99 GB Download
Qwen3.5-4B-DS-v4-Flash-v1.0.Q8_0.gguf Q8_0 4.48 GB Download
Qwen3.5-4B-DS-v4-Flash-v1.0.mmproj-bf16.gguf mmproj-bf16 676 MB Download
Qwen3.5-4B-DS-v4-Flash-v1.0.mmproj-f16.gguf mmproj-f16 676 MB Download
Qwen3.5-4B-DS-v4-Flash-v1.0.mmproj-q8_0.gguf mmproj-q8_0 367 MB Download

llama.cpp

LLM inference in C/C++ — https://github.com/ggml-org/llama.cpp

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GGUF
Model size
4B params
Architecture
qwen35
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