Libraries Transformers How to use janhq/Jan-code-4b-gguf with Transformers:
# Use a pipeline as a high-level helper
from transformers import pipeline
pipe = pipeline("text-generation", model="janhq/Jan-code-4b-gguf")
messages = [
{"role": "user", "content": "Who are you?"},
]
pipe(messages) # Load model directly
from transformers import AutoModel
model = AutoModel.from_pretrained("janhq/Jan-code-4b-gguf", dtype="auto") llama-cpp-python How to use janhq/Jan-code-4b-gguf with llama-cpp-python:
# !pip install llama-cpp-python
from llama_cpp import Llama
llm = Llama.from_pretrained(
repo_id="janhq/Jan-code-4b-gguf",
filename="Jan-code-4b-Q3_K_L.gguf",
)
llm.create_chat_completion(
messages = [
{
"role": "user",
"content": "What is the capital of France?"
}
]
) Notebooks Google Colab Kaggle Local Apps llama.cpp How to use janhq/Jan-code-4b-gguf with llama.cpp:
Install from brew brew install llama.cpp
# Start a local OpenAI-compatible server with a web UI:
llama-server -hf janhq/Jan-code-4b-gguf:Q4_K_M
# Run inference directly in the terminal:
llama-cli -hf janhq/Jan-code-4b-gguf:Q4_K_M Install from WinGet (Windows) winget install llama.cpp
# Start a local OpenAI-compatible server with a web UI:
llama-server -hf janhq/Jan-code-4b-gguf:Q4_K_M
# Run inference directly in the terminal:
llama-cli -hf janhq/Jan-code-4b-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 janhq/Jan-code-4b-gguf:Q4_K_M
# Run inference directly in the terminal:
./llama-cli -hf janhq/Jan-code-4b-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 janhq/Jan-code-4b-gguf:Q4_K_M
# Run inference directly in the terminal:
./build/bin/llama-cli -hf janhq/Jan-code-4b-gguf:Q4_K_M Use Docker docker model run hf.co/janhq/Jan-code-4b-gguf:Q4_K_M LM Studio Jan vLLM How to use janhq/Jan-code-4b-gguf with vLLM:
Install from pip and serve model # Install vLLM from pip:
pip install vllm
# Start the vLLM server:
vllm serve "janhq/Jan-code-4b-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": "janhq/Jan-code-4b-gguf",
"messages": [
{
"role": "user",
"content": "What is the capital of France?"
}
]
}' Use Docker docker model run hf.co/janhq/Jan-code-4b-gguf:Q4_K_M SGLang How to use janhq/Jan-code-4b-gguf with SGLang:
Install from pip and serve model # Install SGLang from pip:
pip install sglang
# Start the SGLang server:
python3 -m sglang.launch_server \
--model-path "janhq/Jan-code-4b-gguf" \
--host 0.0.0.0 \
--port 30000
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:30000/v1/chat/completions" \
-H "Content-Type: application/json" \
--data '{
"model": "janhq/Jan-code-4b-gguf",
"messages": [
{
"role": "user",
"content": "What is the capital of France?"
}
]
}' Use Docker images docker run --gpus all \
--shm-size 32g \
-p 30000:30000 \
-v ~/.cache/huggingface:/root/.cache/huggingface \
--env "HF_TOKEN=<secret>" \
--ipc=host \
lmsysorg/sglang:latest \
python3 -m sglang.launch_server \
--model-path "janhq/Jan-code-4b-gguf" \
--host 0.0.0.0 \
--port 30000
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:30000/v1/chat/completions" \
-H "Content-Type: application/json" \
--data '{
"model": "janhq/Jan-code-4b-gguf",
"messages": [
{
"role": "user",
"content": "What is the capital of France?"
}
]
}' Ollama How to use janhq/Jan-code-4b-gguf with Ollama:
ollama run hf.co/janhq/Jan-code-4b-gguf:Q4_K_M Unsloth Studio new How to use janhq/Jan-code-4b-gguf with Unsloth Studio:
Install Unsloth Studio (macOS, Linux, WSL) curl -fsSL https://unsloth.ai/install.sh | sh
# Run unsloth studio
unsloth studio -H 0.0.0.0 -p 8888
# Then open http://localhost:8888 in your browser
# Search for janhq/Jan-code-4b-gguf to start chatting Install Unsloth Studio (Windows) irm https://unsloth.ai/install.ps1 | iex
# Run unsloth studio
unsloth studio -H 0.0.0.0 -p 8888
# Then open http://localhost:8888 in your browser
# Search for janhq/Jan-code-4b-gguf to start chatting Using HuggingFace Spaces for Unsloth # No setup required
# Open https://huggingface.co/spaces/unsloth/studio in your browser
# Search for janhq/Jan-code-4b-gguf to start chatting Pi new How to use janhq/Jan-code-4b-gguf with Pi:
Start the llama.cpp server # Install llama.cpp:
brew install llama.cpp
# Start a local OpenAI-compatible server:
llama-server -hf janhq/Jan-code-4b-gguf:Q4_K_M 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": "Jan-code-4b-gguf"
}
]
}
}
} Run Pi # Start Pi in your project directory:
pi Docker Model Runner How to use janhq/Jan-code-4b-gguf with Docker Model Runner:
docker model run hf.co/janhq/Jan-code-4b-gguf:Q4_K_M Lemonade How to use janhq/Jan-code-4b-gguf with Lemonade:
Pull the model # Download Lemonade from https://lemonade-server.ai/
lemonade pull janhq/Jan-code-4b-gguf:Q4_K_M Run and chat with the model lemonade run user.Jan-code-4b-gguf-Q4_K_M List all available models lemonade list 
