Janus-Pro-1B EU AI Act Compliance Profile

1. Introduction

Janus-Pro is a novel autoregressive framework that unifies multimodal understanding and generation. It addresses the limitations of previous approaches by decoupling visual encoding into separate pathways, while still utilizing a single, unified transformer architecture for processing. The decoupling not only alleviates the conflict between the visual encoder’s roles in understanding and generation, but also enhances the framework’s flexibility. Janus-Pro surpasses previous unified model and matches or exceeds the performance of task-specific models. The simplicity, high flexibility, and effectiveness of Janus-Pro make it a strong candidate for next-generation unified multimodal models.

Github Repository

2. Model Summary

Janus-Pro is a unified understanding and generation MLLM, which decouples visual encoding for multimodal understanding and generation. Janus-Pro is constructed based on the DeepSeek-LLM-1.5b-base/DeepSeek-LLM-7b-base.

For multimodal understanding, it uses the SigLIP-L as the vision encoder, which supports 384 x 384 image input. For image generation, Janus-Pro uses the tokenizer from here with a downsample rate of 16.

3. Usage Examples

Single Image Inference

Here is an example of visual understanding with a single image.

import torch  
from PIL import Image  
import requests  
from transformers import JanusForConditionalGeneration, JanusProcessor  

model_id = "deepseek-community/Janus-Pro-1B"

# Prepare input for generation
messages = [
    {
        "role": "user",
        "content": [
            {'type': 'image', 'url': 'http://images.cocodataset.org/val2017/0000000397

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Library