Visual Agentic Reinforcement Fine-Tuning
Authors: name: Ziyu Liu, name: Yuhang Zang, name: Yushan Zou, name: Zijian Liang, name: Xiaoyi Dong, name: Yuhang Cao, name: Haodong Duan, name: Dahua Lin, name: Jiaqi Wang

A key trend in Large Reasoning Models (e.g., OpenAI's o3) is the native
agentic ability to use external tools such as web browsers for searching and
writing/executing code for image manipulation to think with images. In the
open-source research community, while significant progress has been made in
language-only agentic abilities such as function calling and tool integration,
the development of multi-modal agentic capabilities that involve truly thinking
with images, and their corresponding benchmarks, are still less explored. This
work highlights the effectiveness of Visual Agentic Reinforcement Fine-Tuning
(Visual-ARFT) for enabling flexible and adaptive reasoning abilities for Large
Vision-Language Models (LVLMs). With Visual-ARFT, open-source LVLMs gain the
ability to browse websites for real-time information updates and write code to
manipulate and analyze input images through cropping, rotation, and other image
processing techniques. We also present a Multi-modal Agentic Tool Bench (MAT)
with two settings (MAT-Search and MAT-Coding) designed to evaluate LVLMs'
agentic search and coding abilities. Our experimental results demonstrate that
Visual-ARFT outperforms its baseline by +18.6% F1 / +13.0% EM on MAT-Coding and
+10.3% F1 / +8.7% EM on MAT-Search, ultimately surpassing GPT-4o. Visual-ARFT
also achieves +29.3 F1% / +25.9% EM gains on existing multi-hop QA benchmarks
such as 2Wiki and HotpotQA, demonstrating strong generalization capabilities.
Our findings suggest that Visual-ARFT offers a promising path toward building
robust and generalizable multimodal agents.