# PrentisAI releases GroundGUI-8B model for GUI agent tasks

Digest AI · Research · published 2026-10-15T04:00:00Z

Canonical: https://digestai.news/story/prentisai-releases-groundgui-8b-model-for-gui-agent-tasks

## Summary

PrentisAI introduced **GroundGUI-8B**, a multimodal model designed for precise GUI agent interactions. The model uses **ScreenRef**, a dataset of 586,000 screenshots and 633,000 referring expressions across desktop, web, and mobile environments. It combines supervised fine-tuning with **Distillation-to-Reinforcement Learning (D2RL)** to improve generalization and address sparse rewards in reinforcement learning.

GroundGUI-8B outperforms 8B-scale models on benchmarks like **ScreenSpot-V2 (95.2%)** and **MMBench-GUI L2 (86.8%)**, matching or exceeding performance of models trained on proprietary data. The project includes open-source code, models, and datasets, available at [GitHub](https://github.com/PrentisAI/GroundGUI).

## Key points

- GroundGUI-8B model achieves 95.2% accuracy on ScreenSpot-V2 benchmark, surpassing 8B-scale competitors
- ScreenRef dataset contains 586K screenshots and 633K referring expressions for GUI grounding tasks
- D2RL method combines supervised fine-tuning with reinforcement learning for improved generalization

## Why it matters

GroundGUI-8B advances GUI agent capabilities, enabling more accurate natural language-to-action mapping in software interfaces. This could accelerate automation and accessibility for developers and users alike.

## Sources

1. [GroundGUI: GUI Grounding by High-Quality Data and Distillation-to-Reinforcement Learning](https://arxiv.org/abs/2610.19100) (arXiv cs.AI, 2026-10-15, primary source)

## Cite

Digest AI, "PrentisAI releases GroundGUI-8B model for GUI agent tasks", 15 October 2026, https://digestai.news/story/prentisai-releases-groundgui-8b-model-for-gui-agent-tasks

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