Monkeyocr Pro 1.2B

🚀 MonkeyOCR: Document Parsing with a Structure-Recognition-Relation Triplet Paradigm

MonkeyOCR simplifies document processing by adopting an SRR triplet paradigm, offering high performance and efficiency in parsing various types of documents.

🚀 Quick Start

1. Install MonkeyOCR

conda create -n MonkeyOCR python=3.10
conda activate MonkeyOCR

git clone https://github.com/Yuliang-Liu/MonkeyOCR.git
cd MonkeyOCR

# Install pytorch, see https://pytorch.org/get-started/previous-versions/ for your cuda version
pip install torch==2.5.1 torchvision==0.20.1 torchaudio==2.5.1 --index-url https://download.pytorch.org/whl/cu124 
pip install -e .

2. Download Model Weights

Download our model from Huggingface.

pip install huggingface_hub

python tools/download_model.py

You can also download our model from ModelScope.

pip install modelscope

python tools/download_model.py -t modelscope

3. Inference

# Make sure in MonkeyOCR directory
python parse.py path/to/your.pdf
# or with image as input
python parse.py path/to/your/image
# Specify output path and model configs path
python parse.py path/to/your.pdf -o ./output -c config.yaml

Output Results

MonkeyOCR generates three types of output files:

1. Processed Markdown File (your.md): The final parsed document content in markdown format, containing text, formulas, tables, and other structured elements.
2. Layout Results (your_layout.pdf): The layout results drawn on the original PDF.
3. Intermediate Block Results (your_middle.json): A JSON file containing detailed information about all detected blocks, including:
   • Block coordinates and positions
   • Block content and type information
   • Relationship information between blocks

These files provide both the final formatted output and detailed intermediate results for further analysis or processing.

4. Gradio Demo

# Prepare your env for gradio
pip install gradio==5.23.3
pip install pdf2image==1.17.0

# Start demo
python demo/demo_gradio.py

Fix shared memory error on RTX 3090 / 4090 / ... GPUs (Optional)

Our 3B model runs efficiently on NVIDIA RTX 3090. However, when using LMDeploy as the inference backend, you may encounter compatibility issues on RTX 3090 / 4090 GPUs — particularly the following error:

triton.runtime.errors.OutOfResources: out of resource: shared memory

To work around this issue, you can apply the patch below:

python tools/lmdeploy_patcher.py patch

⚠️ Important Note

This command will modify LMDeploy's source code in your environment. To revert the changes, simply run:

python tools/lmdeploy_patcher.py restore

Special thanks to @pineking for the solution!

Switch inference backend (Optional)

You can switch inference backend to transformers following the steps below:

1. Install required dependency (if not already installed):

   # install flash attention 2, you can download the corresponding version from https://github.com/Dao-AILab/flash-attention/releases/
   pip install flash-attn==2.7.4.post1 --no-build-isolation
   

2. Open the model_configs.yaml file.
3. Set chat_config.backend to transformers.
4. Adjust the batch_size according to your GPU's memory capacity to ensure stable performance.

Example configuration:

chat_config:
  backend: transformers
  batch_size: 10  # Adjust based on your available GPU memory

✨ Features

MonkeyOCR adopts a Structure-Recognition-Relation (SRR) triplet paradigm, which simplifies the multi-tool pipeline of modular approaches while avoiding the inefficiency of using large multimodal models for full-page document processing.

1. Compared with the pipeline-based method MinerU, our approach achieves an average improvement of 5.1% across nine types of Chinese and English documents, including a 15.0% gain on formulas and an 8.6% gain on tables.
2. Compared to end-to-end models, our 3B-parameter model achieves the best average performance on English documents, outperforming models such as Gemini 2.5 Pro and Qwen2.5 VL-72B.
3. For multi-page document parsing, our method reaches a processing speed of 0.84 pages per second, surpassing MinerU (0.65) and Qwen2.5 VL-7B (0.12).

MonkeyOCR currently does not support photographed documents, but we will continue to improve it in future updates. Stay tuned! Currently, our model is deployed on a single GPU, so if too many users upload files at the same time, issues like “This application is currently busy” may occur. We're actively working on supporting Ollama and other deployment solutions to ensure a smoother experience for more users. Additionally, please note that the processing time shown on the demo page does not reflect computation time alone—it also includes result uploading and other overhead. During periods of high traffic, this time may be longer. The inference speeds of MonkeyOCR, MinerU, and Qwen2.5 VL-7B were measured on an H800 GPU.

🚀🚀🚀 Chinese Video Tutorial (Thanks to leo009 for sharing!)

• YouTube
• Bilibili

📚 Documentation

Benchmark Results

Here are the evaluation results of our model on OmniDocBench. MonkeyOCR-3B uses DocLayoutYOLO as the structure detection model, while MonkeyOCR-3B* uses our trained structure detection model with improved Chinese performance.

1. The end-to-end evaluation results of different tasks.

2. The end-to-end text recognition performance across 9 PDF page types.

3. Comparing MonkeyOCR with closed-source and extra large open-source VLMs.

Visualization Demo

Get a Quick Hands-On Experience with Our Demo: http://vlrlabmonkey.xyz:7685

Our demo is simple and easy to use:

1. Upload a PDF or image.
2. Click “Parse (解析)” to let the model perform structure detection, content recognition, and relationship prediction on the input document. The final output will be a markdown-formatted version of the document.
3. Select a prompt and click “Test by prompt” to let the model perform content recognition on the image based on the selected prompt.

Example for formula document

Example for table document

Example for newspaper

Example for financial report

📄 License

The project is open-sourced under relevant open-source licenses.

📚 Citing MonkeyOCR

If you wish to refer to the baseline results published here, please use the following BibTeX entries:

@misc{li2025monkeyocrdocumentparsingstructurerecognitionrelation,
      title={MonkeyOCR: Document Parsing with a Structure-Recognition-Relation Triplet Paradigm}, 
      author={Zhang Li and Yuliang Liu and Qiang Liu and Zhiyin Ma and Ziyang Zhang and Shuo Zhang and Zidun Guo and Jiarui Zhang and Xinyu Wang and Xiang Bai},
      year={2025},
      eprint={2506.05218},
      archivePrefix={arXiv},
      primaryClass={cs.CV},
      url={https://arxiv.org/abs/2506.05218}, 
}

👏 Acknowledgments

We would like to thank MinerU for providing relevant references and inspiration.