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Tool-augmented LLM agents tend to call tools indiscriminately, even when the model can answer directly. Each unnecessary call wastes API fees and latency, yet no existing benchmark systematically studies when a tool call is actually needed.…

Computation and Language · Computer Science 2026-05-22 Chung-En Sun , Linbo Liu , Ge Yan , Zimo Wang , Tsui-Wei Weng

LLM-based tool agents offer natural language interfaces, enabling users to seamlessly interact with computing services. While REST APIs are valuable resources for building such agents, they must first be transformed into AI-compatible…

Machine Learning · Computer Science 2025-01-29 Xinyi Ni , Qiuyang Wang , Yukun Zhang , Pengyu Hong

Tool learning is increasingly important for large language models (LLMs) to effectively coordinate and utilize a diverse set of tools in order to solve complex real-world tasks. By selecting and integrating appropriate tools, LLMs extend…

Machine Learning · Computer Science 2026-01-21 Zheng Fang , Wolfgang Mayer , Zeyu Zhang , Jian Wang , Hong-Yu Zhang , Wanli Li , Zaiwen Feng

GUI task automation streamlines repetitive tasks, but existing LLM or VLM-based planner-executor agents suffer from brittle generalization, high latency, and limited long-horizon coherence. Their reliance on single-shot reasoning or static…

Artificial Intelligence · Computer Science 2025-09-29 Seoyoung Lee , Seonbin Yoon , Seongbeen Lee , Hyesoo Kim , Joo Yong Sim

Large Language Models (LLMs) have demonstrated proficiency in addressing tasks that necessitate a combination of task planning and the usage of external tools that require a blend of task planning and the utilization of external tools, such…

Artificial Intelligence · Computer Science 2023-11-21 Yilun Kong , Jingqing Ruan , Yihong Chen , Bin Zhang , Tianpeng Bao , Shiwei Shi , Guoqing Du , Xiaoru Hu , Hangyu Mao , Ziyue Li , Xingyu Zeng , Rui Zhao

Extending the capabilities of Large Language Models (LLMs) with functions or tools for environment interaction has led to the emergence of the agent paradigm. In industry, training an LLM is not always feasible because of the scarcity of…

Computation and Language · Computer Science 2025-01-14 Saptarshi Sengupta , Harsh Vashistha , Kristal Curtis , Akshay Mallipeddi , Abhinav Mathur , Joseph Ross , Liang Gou

Research on self-evolving language agents has accelerated, drawing increasing attention to their ability to create, adapt, and maintain tools from task requirements. However, existing benchmarks predominantly rely on predefined…

Software Engineering · Computer Science 2026-03-09 Bowei Xia , Mengkang Hu , Shijian Wang , Jiarui Jin , Wenxiang Jiao , Yuan Lu , Kexin Li , Ping Luo

Deep research systems are widely used for multi-step web research, analysis, and cross-source synthesis, yet their evaluation remains challenging. Existing benchmarks often require annotation-intensive task construction, rely on static…

Computation and Language · Computer Science 2026-01-15 Yibo Wang , Lei Wang , Yue Deng , Keming Wu , Yao Xiao , Huanjin Yao , Liwei Kang , Hai Ye , Yongcheng Jing , Lidong Bing

AI agent development relies heavily on natural language prompting to define agents' tasks, knowledge, and goals. These prompts are interpreted by Large Language Models (LLMs), which govern agent behavior. Consequently, agentic performance…

Artificial Intelligence · Computer Science 2026-04-14 Roi Ben-Gigi , Yuval David , Fabiana Fournier , Lior Limonad , Dany Moshkovich , Hadar Mulian , Segev Shlomov

Large language model (LLM) agents with tool-calling capabilities are increasingly deployed in production systems, yet a fundamental reliability question remains under-explored: does the same agent behave the same way twice? We present a…

Computation and Language · Computer Science 2026-05-29 Abel Yagubyan

Fulfilling user needs through Large Language Model multi-turn, multi-step tool-use is rarely a straightforward process. Real user interactions are inherently wild, being intricate, messy, and flexible. We identify three key challenges from…

Human-Computer Interaction · Computer Science 2026-04-09 Peijie Yu , Wei Liu , Yifan Yang , Jinjian Li , Zelong Zhang , Xiao Feng , Feng Zhang

Although recent tool-augmented benchmarks involve complex requests, evaluation remains limited to answer matching, neglecting critical trajectory aspects like efficiency, hallucination, and adaptivity. The most straightforward method for…

Artificial Intelligence · Computer Science 2026-05-26 Wonjoong Kim , Sangwu Park , Yeonjun In , Sein Kim , Dongha Lee , Chanyoung Park

Equipping LLMs with tool-use capabilities via Agentic Reinforcement Learning (Agentic RL) is bottlenecked by two challenges: the lack of scalable, robust execution environments and the scarcity of realistic training data that captures…

Requirements elicitation, a critical, yet time-consuming and challenging step in product development, often fails to capture the full spectrum of user needs. This may lead to products that fall short of expectations. This paper introduces a…

Human-Computer Interaction · Computer Science 2024-04-26 Mohammadmehdi Ataei , Hyunmin Cheong , Daniele Grandi , Ye Wang , Nigel Morris , Alexander Tessier

Large language models (LLMs) have demonstrated remarkable capabilities in tool learning. In real-world scenarios, user queries are often ambiguous and incomplete, requiring effective clarification. However, existing interactive…

Computation and Language · Computer Science 2025-06-12 Xuan Zhang , Yongliang Shen , Zhe Zheng , Linjuan Wu , Wenqi Zhang , Yuchen Yan , Qiuying Peng , Jun Wang , Weiming Lu

Enterprises possess a vast array of API assets scattered across various functions, forming the backbone of existing business processes. By leveraging these APIs as functional tools, enterprises can design diverse, scenario-specific agent…

Artificial Intelligence · Computer Science 2024-12-23 Guancheng Zeng , Wentao Ding , Beining Xu , Chi Zhang , Wenqiang Han , Gang Li , Jingjing Mo , Pengxu Qiu , Xinran Tao , Wang Tao , Haowen Hu

Tool-augmented LLMs are a promising approach to create AI agents that can have realistic conversations, follow procedures, and call appropriate functions. However, evaluating them is challenging due to the diversity of possible…

Computation and Language · Computer Science 2024-10-11 Samuel Arcadinho , David Aparicio , Mariana Almeida

Despite widespread interests in reinforcement-learning for task-oriented dialogue systems, several obstacles can frustrate research and development progress. First, reinforcement learners typically require interaction with the environment,…

Machine Learning · Computer Science 2017-11-15 Xiujun Li , Zachary C. Lipton , Bhuwan Dhingra , Lihong Li , Jianfeng Gao , Yun-Nung Chen

Large language models (LLMs) increasingly rely on external tools and APIs to execute complex tasks specified in natural language. Evaluating such tool calling capabilities in realistic enterprise settings is challenging: APIs are often…

Software Engineering · Computer Science 2026-01-27 Benjamin Elder , Anupama Murthi , Jungkoo Kang , Ankita Rajaram Naik , Kiran Kate , Kinjal Basu , Danish Contractor

Tool-integrated LLMs can retrieve, compute, and take real-world actions via external tools, but reliability remains a key bottleneck. We argue that failures stem from both tool-use accuracy (how well an agent invokes a tool) and intrinsic…

Artificial Intelligence · Computer Science 2026-04-02 Hy Dang , Quang Dao , Meng Jiang