InfantAgent: A multimodal agent that can interact with its own PC in a multimodal manner.

Introduction

1. To build a multimodal agent that can interact with its own PC in a multimodal manner. This means it can autonomously operate the mouse and click anywhere on the screen, rather than relying solely on browser analysis to make decisions.

2. This agent system will be used for subsequent reinforcement learning training of agents.

3. I have not yet conducted large-scale testing of this agent beyond the benchmark; please feel free to report any bugs or submit pull requests. 👋

Recent Updates

We’ve switched from NoMachine to the open-source Guacamole for desktop sharing, because NoMachine requires a license for multi-user concurrent sessions. The Docker code has just been updated to support this change, and we will roll out a few follow-up patches to address remaining edge cases and polish the experience.

Installation Requirements

Now, it is only tested on linux server with Nvidia Tesla GPU (A100, H200 ...). The GPU is for open-spurce model inference. There may be some bugs for Mac/Windows.

Setup

1. Setup environment

cd InfantAgent
conda create --name infant python=3.11
conda activate infant
conda install -c conda-forge uv
uv pip install -e .

2. Build the Docker. Only required on the first use. It will pull the docker image from the Docker Hub.

cd InfantAgent/infant/computer
docker build -t ubuntu-gnome-nomachine:latest -f Dockerfile .

3. Run

export CUDA_VISIBLE_DEVICES=4,5 # For Visual Grounding model inference
uvicorn backend:app --log-level info

4. Configure Virtual Machine (You only need to configure it once when using it for the first time.)

• Enter your api key in setting By default, you should enter the Claude API key. You can also change this in the config.py file.

• Wait for the backend to configure automatically until you see the following instruction: For first-time users, please go to http://localhost:4443/guacamole/#/client/GNOME to set up and skip unnecessary steps.

• Go to http://localhost:4443/guacamole/#/client/GNOME Skip the security check (this is HTTPS, not HTTP), and you will see the Linux desktop.

• Go back to terminal and press enter to skip this reminder: When the computer setup is complete, press Enter to continue

• Go back to the frontend and refresh the page. In the upper-right corner of the virtual machine, enter your username and password. By default, the username for the guacamole is web and the password is also web. The computer username is infant and the password is 123. You can also change these in the config.py file.

Now the agent is ready to use, and you don't need to configure the virtual machine again as long as the container still exists.

Demo

demo.mp4

A simple web application demo

Acknowledgements

Thanks to the many outstanding open-source projects and models.

1. OpenHands Our Docker container’s configuration, connection setup, and Jupyter execution method are based on OpenHands, and we used the OpenHands testbed for SWE-Bench testing.

2. browser-use Our web-browser tools are modified from browser-use.

3. docker-ubuntu-gnome-nomachine We modified the code for this to setup the nomachine display.

4. UI-TARS We use UI-TARS-1.5 7B as our default visual-grounding model.

Cite

@misc{lei2025infantagentnextmultimodalgeneralistagent,
      title={InfantAgent-Next: A Multimodal Generalist Agent for Automated Computer Interaction}, 
      author={Bin Lei and Weitai Kang and Zijian Zhang and Winson Chen and Xi Xie and Shan Zuo and Mimi Xie and Ali Payani and Mingyi Hong and Yan Yan and Caiwen Ding},
      year={2025},
      eprint={2505.10887},
      archivePrefix={arXiv},
      primaryClass={cs.AI},
      url={https://arxiv.org/abs/2505.10887}, 
}