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arXiv · 2607.23524

Delegation Intelligence in Deep Search: A Controllable Framework for Disentangled Capability Diagnosis

Xinhao Yao·Yuanzhuo Liu·Changhao Wang·Yunfei Yu·Haoran Tan·Yuyao Zhang·Ruifeng Ren·Minlong Peng·Yong Liu
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Abstract

Deep search is becoming a core capability of modern agent systems, yet it is typically evaluated solely based on end-to-end answer accuracy. This coupled evaluation paradigm entangles retrieval quality, long-context comprehension, evidence verification, and tool-use decisions, making it difficult to determine whether a model truly knows when and how to delegate information seeking to search. To this end: (1) We formalize this meta-capability as Delegation Intelligence in deep search and decompose it into complementary dimensions-Search Decision-Making (recognizing information insufficiency and deciding whether, when, and how to search) and Information Synthesis and Verification (aggregating evidence from multiple sources, judging source reliability, and synthesizing information under noisy, potentially adversarial conditions). (2) To enable disentangled and reproducible measurement, we develop a controllable synthesis pipeline built on document-grounded reverse engineering. This yields a general recipe for constructing controlled deep-search evaluations rather than a single fixed dataset. (3) As a concrete instantiation, we construct DelegSearchBench, together with a disentangled evaluation protocol that isolates each capability dimension by varying document composition and tool access. (4) Across representative models, we demonstrate that deep-search competence cannot be adequately characterized by final-answer accuracy alone...

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Xinhao Yao, Yuanzhuo Liu, Changhao Wang, Yunfei Yu, Haoran Tan, Yuyao Zhang, Ruifeng Ren, Minlong Peng, Yong Liu. 2026-07-26. Delegation Intelligence in Deep Search: A Controllable Framework for Disentangled Capability Diagnosis. https://arxiv.org/abs/2607.23524

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