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 tinyopsec/Arch-Router-1.5B-GGUF:
Configure the model in Pi
# Install Pi:
npm install -g @earendil-works/pi-coding-agent
# Add to ~/.pi/agent/models.json:
{
  "providers": {
    "llama-cpp": {
      "baseUrl": "http://localhost:8080/v1",
      "api": "openai-completions",
      "apiKey": "none",
      "models": [
        {
          "id": "tinyopsec/Arch-Router-1.5B-GGUF:"
        }
      ]
    }
  }
}
Run Pi
# Start Pi in your project directory:
pi
Quick Links

Arch-Router-1.5B β€” GGUF

GGUF quantizations of katanemo/Arch-Router-1.5B, a Qwen2.5-1.5B fine-tuned for preference-aligned LLM routing (domain/action matching), produced with llama.cpp.

Available files

File Quantization Description
model-F16.gguf F16 Full precision (3.0 GB)
model-Q8_0.gguf Q8_0 8-bit
model-Q6_K.gguf Q6_K 6-bit
model-Q5_K_M.gguf Q5_K_M 5-bit medium
model-Q5_K_S.gguf Q5_K_S 5-bit small
model-Q5_0.gguf Q5_0 5-bit
model-Q4_K_M.gguf Q4_K_M 4-bit medium (recommended)
model-Q4_K_S.gguf Q4_K_S 4-bit small
model-Q4_0.gguf Q4_0 4-bit
model-Q3_K_L.gguf Q3_K_L 3-bit large
model-Q3_K_M.gguf Q3_K_M 3-bit medium
model-Q3_K_S.gguf Q3_K_S 3-bit small
model-Q2_K.gguf Q2_K 2-bit

Usage

With llama.cpp:

./llama-cli -m model-Q4_K_M.gguf -p "Your prompt" -n 256

Or any GGUF-compatible runtime (Ollama, LM Studio, koboldcpp, etc.).

License

Katanemo Research License. Built on Qwen/Qwen2.5-1.5B-Instruct.

Disclaimer

Routing model. Evaluate before use.

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GGUF
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Architecture
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