DR3-Eval: Towards Realistic and Reproducible Deep Research Evaluation

Qianqian Xie, He Zhu, Xueming Han, Qingheng Xiong, Tiantian Xia, Fanyu Meng, Jiakai Wang, Zhiqi Bai, Chengkang Jiang, Zhaohui Wang, Yubin Guo, Yuqing Wen, Jiayang Mao, Zijie Zhang, Shihao Li, Yanghai Wang, Yuxiang Ren, Junlan Feng, Jiaheng Liu


Abstract
Deep Research Agents (DRAs) aim to solve complex, long-horizon research tasks involving planning, retrieval, multimodal understanding, and report generation, yet their evaluation remains challenging due to dynamic web environments and ambiguous task definitions. We propose **DR3-Eval**, a realistic and reproducible benchmark for evaluating deep research agents on multimodal, multi-file report generation. DR3-Eval is constructed from authentic user-provided materials and paired with a per-task static research sandbox corpus that simulates open-web complexity while remaining fully verifiable, containing supportive documents, distractors, and noise. Moreover, we introduce a multi-dimensional evaluation framework measuring Information Recall, Factual Accuracy, Citation Coverage, Instruction Following, and Depth Quality, and validate its alignment with human judgments. Experiments with our developed multi-agent system DR3-Agent based on multiple state-of-the-art language models demonstrate that DR3-Eval is highly challenging and reveals critical failure modes in retrieval robustness and hallucination control.
Anthology ID:
2026.emnlp-main.1691
Volume:
Proceedings of the 2026 Conference on Empirical Methods in Natural Language Processing
Month:
October
Year:
2026
Address:
Budapest, Hungary
Editors:
Hung-Yi Lee, Sunipa Dev, Jessy Li, Desmond Elliott
Venue:
EMNLP
SIG:
SIGDAT
Publisher:
Association for Computational Linguistics
Note:
Pages:
38472–38504
Language:
URL:
https://aclanthology.org/2026.emnlp-main.1691/
DOI:
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Cite (ACL):
Qianqian Xie, He Zhu, Xueming Han, Qingheng Xiong, Tiantian Xia, Fanyu Meng, Jiakai Wang, Zhiqi Bai, Chengkang Jiang, Zhaohui Wang, Yubin Guo, Yuqing Wen, Jiayang Mao, Zijie Zhang, Shihao Li, Yanghai Wang, Yuxiang Ren, Junlan Feng, and Jiaheng Liu. 2026. DR3-Eval: Towards Realistic and Reproducible Deep Research Evaluation. In Proceedings of the 2026 Conference on Empirical Methods in Natural Language Processing, pages 38472–38504, Budapest, Hungary. Association for Computational Linguistics.
Cite (Informal):
DR3-Eval: Towards Realistic and Reproducible Deep Research Evaluation (Xie et al., EMNLP 2026)
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https://aclanthology.org/2026.emnlp-main.1691.pdf