Instructions to use kai-os/Grug-12B-GGUF with libraries, inference providers, notebooks, and local apps. Follow these links to get started.

Notebooks
Google Colab
Kaggle
Local Apps Settings

How to use kai-os/Grug-12B-GGUF with llama.cpp:

Install (macOS, Linux)

curl -LsSf https://llama.app/install.sh | sh
# Start a local OpenAI-compatible server with a web UI:
llama serve -hf kai-os/Grug-12B-GGUF:Q4_K_M
# Run inference directly in the terminal:
llama cli -hf kai-os/Grug-12B-GGUF:Q4_K_M

Install from WinGet (Windows)

winget install llama.cpp
# Start a local OpenAI-compatible server with a web UI:
llama serve -hf kai-os/Grug-12B-GGUF:Q4_K_M
# Run inference directly in the terminal:
llama cli -hf kai-os/Grug-12B-GGUF:Q4_K_M

Use pre-built binary

# Download pre-built binary from:
# https://github.com/ggerganov/llama.cpp/releases
# Start a local OpenAI-compatible server with a web UI:
./llama-server -hf kai-os/Grug-12B-GGUF:Q4_K_M
# Run inference directly in the terminal:
./llama-cli -hf kai-os/Grug-12B-GGUF:Q4_K_M

Build from source code

git clone https://github.com/ggerganov/llama.cpp.git
cd llama.cpp
cmake -B build
cmake --build build -j --target llama-server llama-cli
# Start a local OpenAI-compatible server with a web UI:
./build/bin/llama-server -hf kai-os/Grug-12B-GGUF:Q4_K_M
# Run inference directly in the terminal:
./build/bin/llama-cli -hf kai-os/Grug-12B-GGUF:Q4_K_M

Use Docker

docker model run hf.co/kai-os/Grug-12B-GGUF:Q4_K_M

LM Studio
Jan

vLLM

How to use kai-os/Grug-12B-GGUF with vLLM:

Install from pip and serve model

# Install vLLM from pip:
pip install vllm
# Start the vLLM server:
vllm serve "kai-os/Grug-12B-GGUF"
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:8000/v1/chat/completions" \
	-H "Content-Type: application/json" \
	--data '{
		"model": "kai-os/Grug-12B-GGUF",
		"messages": [
			{
				"role": "user",
				"content": "What is the capital of France?"
			}
		]
	}'

Use Docker

docker model run hf.co/kai-os/Grug-12B-GGUF:Q4_K_M

Ollama
How to use kai-os/Grug-12B-GGUF with Ollama:
```
ollama run hf.co/kai-os/Grug-12B-GGUF:Q4_K_M
```
Unsloth Desktop

How to use kai-os/Grug-12B-GGUF with Pi:

Start the llama.cpp server

# Install llama.cpp:
brew install llama.cpp
# Start a local OpenAI-compatible server:
llama serve -hf kai-os/Grug-12B-GGUF:Q4_K_M

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": "kai-os/Grug-12B-GGUF:Q4_K_M"
        }
      ]
    }
  }
}

Run Pi

# Start Pi in your project directory:
pi

Docker Model Runner
How to use kai-os/Grug-12B-GGUF with Docker Model Runner:
```
docker model run hf.co/kai-os/Grug-12B-GGUF:Q4_K_M
```

Lemonade

How to use kai-os/Grug-12B-GGUF with Lemonade:

Pull the model

# Download Lemonade from https://lemonade-server.ai/
lemonade pull kai-os/Grug-12B-GGUF:Q4_K_M

Run and chat with the model

lemonade run user.Grug-12B-GGUF-Q4_K_M

List all available models

lemonade list

Hermes Agent

How to use kai-os/Grug-12B-GGUF with Hermes Agent:

Start the llama.cpp server

# Install llama.cpp:
brew install llama.cpp
# Start a local OpenAI-compatible server:
llama serve -hf kai-os/Grug-12B-GGUF:Q4_K_M

Configure Hermes

# Install Hermes:
curl -fsSL https://hermes-agent.nousresearch.com/install.sh | bash
hermes setup
# Point Hermes at the local server:
hermes config set model.provider custom
hermes config set model.base_url http://127.0.0.1:8080/v1
hermes config set model.default kai-os/Grug-12B-GGUF:Q4_K_M

Run Hermes

hermes

Atomic Chat

OpenClaw

How to use kai-os/Grug-12B-GGUF with OpenClaw:

Start the llama.cpp server

# Install llama.cpp:
brew install llama.cpp
# Start a local OpenAI-compatible server:
llama serve -hf kai-os/Grug-12B-GGUF:Q4_K_M

Configure OpenClaw

# Install OpenClaw:
npm install -g openclaw@latest
# Register the local server and set it as the default model:
openclaw onboard --non-interactive --mode local \
  --auth-choice custom-api-key \
  --custom-base-url http://127.0.0.1:8080/v1 \
  --custom-model-id "kai-os/Grug-12B-GGUF:Q4_K_M" \
  --custom-provider-id llama-cpp \
  --custom-compatibility openai \
  --custom-text-input \
  --accept-risk \
  --skip-health

Run OpenClaw

openclaw agent --local --agent main --message "Hello from Hugging Face"

Grug 12B GGUF

This is the adjacent GGUF release for kai-os/Grug-12B. The main repo contains the merged Transformers/safetensors fine-tune; this repo contains a llama.cpp quantized file for local inference.

Files

Grug-12B-Q4_K_M.gguf - practical mixed-precision 4-bit GGUF quant, about 7.0 GB.
banner.png - model banner.

Conversion

Converted from the merged full model release, then quantized with llama.cpp.

Source model: kai-os/Grug-12B
llama.cpp commit: 4fc4ec5
Conversion outtype: BF16
Uploaded quant: Q4_K_M
Quantized size: 7024.34 MiB
Bits per weight: 4.95 BPW
SHA256: 3928e9af604369c111ec7098660781f26e3dc350080e3786ef9dd69881967348

Usage

Use a recent llama.cpp build with Gemma 4 / Gemma4 Unified GGUF support.

hf download kai-os/Grug-12B-GGUF Grug-12B-Q4_K_M.gguf
llama-cli -m Grug-12B-Q4_K_M.gguf -p "What is 2+2? Answer briefly." -n 64

Training Summary

Grug 12B is a compact-reasoning fine-tune of google/gemma-4-12B-it trained with QLoRA, then merged into the base model for release. The training target is terse, high-density reasoning that preserves constraints, branching decisions, invariants, edge cases, and final-answer checks while reducing unnecessary reasoning-token verbosity.

See the full model card at kai-os/Grug-12B for the technique details, dataset provenance, filtering notes, and benchmark notes.

Thanks to Lambda for the compute credits used for this work.