Instructions to use Menlo/Jan-nano-gguf with libraries, inference providers, notebooks, and local apps. Follow these links to get started.

Libraries

How to use Menlo/Jan-nano-gguf with llama-cpp-python:

# !pip install llama-cpp-python

from llama_cpp import Llama

llm = Llama.from_pretrained(
	repo_id="Menlo/Jan-nano-gguf",
	filename="jan-nano-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 Menlo/Jan-nano-gguf with llama.cpp:

Install from brew

brew install llama.cpp
# Start a local OpenAI-compatible server with a web UI:
llama-server -hf Menlo/Jan-nano-gguf:Q4_K_M
# Run inference directly in the terminal:
llama-cli -hf Menlo/Jan-nano-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 Menlo/Jan-nano-gguf:Q4_K_M
# Run inference directly in the terminal:
llama-cli -hf Menlo/Jan-nano-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 Menlo/Jan-nano-gguf:Q4_K_M
# Run inference directly in the terminal:
./llama-cli -hf Menlo/Jan-nano-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 Menlo/Jan-nano-gguf:Q4_K_M
# Run inference directly in the terminal:
./build/bin/llama-cli -hf Menlo/Jan-nano-gguf:Q4_K_M

Use Docker

docker model run hf.co/Menlo/Jan-nano-gguf:Q4_K_M

LM Studio
Jan

vLLM

How to use Menlo/Jan-nano-gguf with vLLM:

Install from pip and serve model

# Install vLLM from pip:
pip install vllm
# Start the vLLM server:
vllm serve "Menlo/Jan-nano-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": "Menlo/Jan-nano-gguf",
		"messages": [
			{
				"role": "user",
				"content": "What is the capital of France?"
			}
		]
	}'

Use Docker

docker model run hf.co/Menlo/Jan-nano-gguf:Q4_K_M

Ollama
How to use Menlo/Jan-nano-gguf with Ollama:
```
ollama run hf.co/Menlo/Jan-nano-gguf:Q4_K_M
```

Unsloth Studio new

How to use Menlo/Jan-nano-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 Menlo/Jan-nano-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 Menlo/Jan-nano-gguf to start chatting

Using HuggingFace Spaces for Unsloth

# No setup required
# Open https://huggingface.co/spaces/unsloth/studio in your browser
# Search for Menlo/Jan-nano-gguf to start chatting

Pi new

How to use Menlo/Jan-nano-gguf with Pi:

Start the llama.cpp server

# Install llama.cpp:
brew install llama.cpp
# Start a local OpenAI-compatible server:
llama-server -hf Menlo/Jan-nano-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": "Menlo/Jan-nano-gguf:Q4_K_M"
        }
      ]
    }
  }
}

Run Pi

# Start Pi in your project directory:
pi

Hermes Agent new

How to use Menlo/Jan-nano-gguf with Hermes Agent:

Start the llama.cpp server

# Install llama.cpp:
brew install llama.cpp
# Start a local OpenAI-compatible server:
llama-server -hf Menlo/Jan-nano-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 Menlo/Jan-nano-gguf:Q4_K_M

Run Hermes

hermes

Docker Model Runner
How to use Menlo/Jan-nano-gguf with Docker Model Runner:
```
docker model run hf.co/Menlo/Jan-nano-gguf:Q4_K_M
```

Lemonade

How to use Menlo/Jan-nano-gguf with Lemonade:

Pull the model

# Download Lemonade from https://lemonade-server.ai/
lemonade pull Menlo/Jan-nano-gguf:Q4_K_M

Run and chat with the model

lemonade run user.Jan-nano-gguf-Q4_K_M

List all available models

lemonade list

Jan Nano

_{Note: Jan-Nano is a non-thinking model.}

Authors: Alan Dao, Bach Vu Dinh

Overview

Jan Nano is a fine-tuned language model built on top of the Qwen3 architecture. Developed as part of the Jan ecosystem, it balances compact size and extended context length, making it ideal for efficient, high-quality text generation in local or embedded environments.

Features

Tool Use: Excellent function calling and tool integration
Research: Enhanced research and information processing capabilities
Small Model: VRAM efficient for local deployment

Use it with Jan (UI)

Install Jan using Quickstart

Original weight: https://huggingface.co/Menlo/Jan-nano

Recommended Sampling Parameters

Temperature: 0.7
Top-p: 0.8
Top-k: 20
Min-p: 0

📄 Citation

@misc{dao2025jannanotechnicalreport,
      title={Jan-nano Technical Report}, 
      author={Alan Dao and Dinh Bach Vu},
      year={2025},
      eprint={2506.22760},
      archivePrefix={arXiv},
      primaryClass={cs.CL},
      url={https://arxiv.org/abs/2506.22760}, 
}