InternAgent-1.5: A Unified Agentic Framework for Long-Horizon Autonomous Scientific Discovery
Abstract
We introduce InternAgent-1.5, a unified system designed for end-to-end scientific discovery across computational and empirical domains. The system is built on a structured architecture composed of three coordinated subsystems for generation, verification, and evolution. These subsystems are supported by foundational capabilities for deep research, solution optimization, and long horizon memory. The architecture allows InternAgent-1.5 to operate continuously across extended discovery cycles while maintaining coherent and improving behavior. It also enables the system to coordinate computational modeling and laboratory experimentation within a single unified system. We evaluate InternAgent-1.5 on scientific reasoning benchmarks such as GAIA, HLE, GPQA, and FrontierScience, and the system achieves leading performance that demonstrates strong foundational capabilities. Beyond these benchmarks, we further assess two categories of discovery tasks. In algorithm discovery tasks, InternAgent-1.5 autonomously designs competitive methods for core machine learning problems. In empirical discovery tasks, it executes complete computational or wet lab experiments and produces scientific findings in earth, life, biological, and physical domains. Overall, these results show that InternAgent-1.5 provides a general and scalable framework for autonomous scientific discovery.
Cite
@article{arxiv.2602.08990,
title = {InternAgent-1.5: A Unified Agentic Framework for Long-Horizon Autonomous Scientific Discovery},
author = {Shiyang Feng and Runmin Ma and Xiangchao Yan and Yue Fan and Yusong Hu and Songtao Huang and Shuaiyu Zhang and Zongsheng Cao and Tianshuo Peng and Jiakang Yuan and Zijie Guo and Zhijie Zhong and Shangheng Du and Weida Wang and Jinxin Shi and Yuhao Zhou and Xiaohan He and Zhiyin Yu and Fangchen Yu and Qihao Zheng and Jiamin Wu and Mianxin Liu and Chi Zhang and Shaowei Hou and Shuya Li and Yankai Jiang and Wenjie Lou and Lilong Wang and Zifu Wang and Jiong Wang and Wanghan Xu and Yue Deng and Dongrui Liu and Yiheng Wang and Wenlong Zhang and Fenghua Ling and Shufei Zhang and Xiaosong Wang and Shuangjia Zheng and Xun Huang and Siqi Sun and Shuyue Hu and Peng Ye and Chunfeng Song and Bin Wang and Conghui He and Yihao Liu and Xin Li and Qibin Hou and Tao Chen and Xiangyu Yue and Bin Wang and Liang He and Dahua Lin and Bowen Zhou and Bo Zhang and Lei Bai},
journal= {arXiv preprint arXiv:2602.08990},
year = {2026}
}
Comments
Code and project page: https://github.com/InternScience/InternAgent