---
base_model:
- microsoft/Phi-3.5-vision-instruct
license: mit
pipeline_tag: image-text-to-text
library_name: transformers
tags:
- GUI
- Agent
- Grounding
- CUA
---

# Microsoft Phi-Ground-4B-7C

<p align="center">
   <a href="https://microsoft.github.io/Phi-Ground/" target="_blank">🤖 HomePage</a> | <a href="https://huggingface.co/papers/2507.23779" target="_blank">📄 Paper </a> | <a href="https://arxiv.org/abs/2507.23779" target="_blank">📄 Arxiv </a> | <a href="https://huggingface.co/microsoft/Phi-Ground" target="_blank"> 😊 Model </a> | <a href="https://github.com/microsoft/Phi-Ground/tree/main/benchmark/new_annotations" target="_blank"> 😊 Eval data </a> 
</p>

![overview](docs/images/abstract.png)

**Phi-Ground-4B-7C** is a member of the Phi-Ground model family, introduced in the technical report [Phi-Ground Tech Report: Advancing Perception in GUI Grounding](https://huggingface.co/papers/2507.23779). It is fine-tuned from [microsoft/Phi-3.5-vision-instruct](https://huggingface.co/microsoft/Phi-3.5-vision-instruct) with a fixed input resolution of 1008x672. 

The Phi-Ground model family achieves state-of-the-art performance across all five grounding benchmarks for models under 10B parameters in agent settings. In the end-to-end model setting, this model achieves SOTA results with scores of **43.2** on ScreenSpot-pro and **27.2** on UI-Vision.

### Main results

![overview](docs/images/r1.png)

### Usage
The current `transformers` version can be verified with: `pip list | grep transformers`.

Examples of required packages:
```
flash_attn==2.5.8
numpy==1.24.4
Pillow==10.3.0
Requests==2.31.0
torch==2.3.0
torchvision==0.18.0
transformers==4.43.0
accelerate==0.30.0
```


### Input Formats

The model requires a strict input format including fixed image resolution, instruction-first order and system prompt.

**Input Preprocessing**

```python
from PIL import Image
def process_image(img):

    target_width, target_height = 336 * 3, 336 * 2
 
    img_ratio = img.width / img.height  
    target_ratio = target_width / target_height
   
    if img_ratio > target_ratio:  
        new_width = target_width  
        new_height = int(new_width / img_ratio)
    else:  
        new_height = target_height
        new_width = int(new_height * img_ratio)  
    reshape_ratio = new_width / img.width

    img = img.resize((new_width, new_height), Image.LANCZOS)  
    new_img = Image.new("RGB", (target_width, target_height), (255, 255, 255))  
    paste_position = (0, 0)  
    new_img.paste(img, paste_position)
    return new_img

instruction = "<your instruction>"
prompt = """<|user|>
The description of the element: 
{RE}

Locate the above described element in the image. The output should be bounding box using relative coordinates multiplying 1000.
<|image_1|>
<|end|>
<|assistant|>""".format(RE=instruction)

image_path = "<your image path>"
image = process_image(Image.open(image_path))
```

You can use the Hugging Face `transformers` library or [vLLM](https://github.com/vllm-project/vllm) for inference. For further details, including end-to-end examples and benchmark reproduction, please visit the [official GitHub repository](https://github.com/microsoft/Phi-Ground).

### Citation
If you find this work useful, please cite:
```bibtex
@article{zhang2025phi,
  title={Phi-Ground Tech Report: Advancing Perception in GUI Grounding},
  author={Zhang, Miaosen and Xu, Ziqiang and Zhu, Jialiang and Dai, Qi and Qiu, Kai and Yang, Yifan and Luo, Chong and Chen, Tianyi and Wagle, Justin and Franklin, Tim and others},
  journal={arXiv preprint arXiv:2507.23779},
  year={2025}
}
```