How to Install and Set Up JanusFlow 1.3B on Windows

Anas Mohammad

Feb 11, 2025 • 2 min read

JanusFlow 1.3B

JanusFlow is a multimodal large model from DeepSeek that can interpret images and generate pictures based on text descriptions. It is the second-generation version of the Janus series, offering improved speed and higher-quality image generation.

This guide provides a step-by-step process for installing and setting up JanusFlow 1.3B on a Windows system.

Prerequisites

Before beginning the installation, ensure your system meets the following requirements:

Windows Operating System: This guide is specifically for Windows users.
NVIDIA Graphics Card: A GPU with at least 8GB of VRAM is required.
CUDA Support: CUDA 12.4 must be installed. You can download it from the official NVIDIA website.
Python: It is recommended to use Python version 3.10.

Step-by-Step Installation Guide

1. Clone the Janus Repository

Open a command prompt or PowerShell window and execute the following command to clone the Janus repository from GitHub:

git clone https://github.com/deepseek-ai/Janus.git

2. Install Required Packages

Navigate to the Janus directory and install the necessary Python packages using pip:

cd Janus
pip install -e .

3. Modify the Model (Optional)

Janus-Pro is available in both 1B and 7B versions, with the 7B version offering superior performance. To use the 7B model, modify the demo/app_januspro.py script:

Open the demo/app_januspro.py file in a text editor.
Locate the load_model method.

Change the model_path variable from:

model_path = "deepseek-ai/Janus-Pro-1B"

to:

model_path = "deepseek-ai/Janus-Pro-7B"

4. Run the Demo

Execute the following command to run the JanusFlow demo:

python demo/app_januspro.py

Running Configuration

CUDA Compatibility: If encountering GPU errors, verify CUDA 12.4 is installed correctly using nvcc --version.
VRAM Limitations: For the 1B model, 8GB VRAM is sufficient. The 7B model may require 16GB+.
Troubleshooting Tips:
- Update NVIDIA drivers via GeForce Experience.
- Install Microsoft Visual C++ Redistributable if DLL errors occur.

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Conclusion

JanusFlow 1.3B unlocks powerful image-generation capabilities on Windows, while AI writing tools like Jasper and Litero streamline content creation. By combining these technologies, you can produce visually engaging and textually rich content efficiently.