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Main Authors: Zhu, Hanlin, Guo, Tianyu, Mei, Song, Russell, Stuart, Ghosh, Nikhil, Bietti, Alberto, Jiao, Jiantao
Format: Preprint
Published: 2025
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Online Access:https://arxiv.org/abs/2509.21998
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author Zhu, Hanlin
Guo, Tianyu
Mei, Song
Russell, Stuart
Ghosh, Nikhil
Bietti, Alberto
Jiao, Jiantao
author_facet Zhu, Hanlin
Guo, Tianyu
Mei, Song
Russell, Stuart
Ghosh, Nikhil
Bietti, Alberto
Jiao, Jiantao
contents As LLMs are increasingly deployed as agents, agentic reasoning - the ability to combine tool use, especially search, and reasoning - becomes a critical skill. However, it is hard to disentangle agentic reasoning when evaluated in complex environments and tasks. Current agent benchmarks often mix agentic reasoning with challenging math reasoning, expert-level knowledge, and other advanced capabilities. To fill this gap, we build a novel benchmark, GSM-Agent, where an LLM agent is required to solve grade-school-level reasoning problems, but is only presented with the question in the prompt without the premises that contain the necessary information to solve the task, and needs to proactively collect that information using tools. Although the original tasks are grade-school math problems, we observe that even frontier models like GPT-5 only achieve 67% accuracy. To understand and analyze the agentic reasoning patterns, we propose the concept of agentic reasoning graph: cluster the environment's document embeddings into nodes, and map each tool call to its nearest node to build a reasoning path. Surprisingly, we identify that the ability to revisit a previously visited node, widely taken as a crucial pattern in static reasoning, is often missing for agentic reasoning for many models. Based on the insight, we propose a tool-augmented test-time scaling method to improve LLM's agentic reasoning performance by adding tools to encourage models to revisit. We expect our benchmark and the agentic reasoning framework to aid future studies of understanding and pushing the boundaries of agentic reasoning.
format Preprint
id arxiv_https___arxiv_org_abs_2509_21998
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle GSM-Agent: Understanding Agentic Reasoning Using Controllable Environments
Zhu, Hanlin
Guo, Tianyu
Mei, Song
Russell, Stuart
Ghosh, Nikhil
Bietti, Alberto
Jiao, Jiantao
Artificial Intelligence
Machine Learning
As LLMs are increasingly deployed as agents, agentic reasoning - the ability to combine tool use, especially search, and reasoning - becomes a critical skill. However, it is hard to disentangle agentic reasoning when evaluated in complex environments and tasks. Current agent benchmarks often mix agentic reasoning with challenging math reasoning, expert-level knowledge, and other advanced capabilities. To fill this gap, we build a novel benchmark, GSM-Agent, where an LLM agent is required to solve grade-school-level reasoning problems, but is only presented with the question in the prompt without the premises that contain the necessary information to solve the task, and needs to proactively collect that information using tools. Although the original tasks are grade-school math problems, we observe that even frontier models like GPT-5 only achieve 67% accuracy. To understand and analyze the agentic reasoning patterns, we propose the concept of agentic reasoning graph: cluster the environment's document embeddings into nodes, and map each tool call to its nearest node to build a reasoning path. Surprisingly, we identify that the ability to revisit a previously visited node, widely taken as a crucial pattern in static reasoning, is often missing for agentic reasoning for many models. Based on the insight, we propose a tool-augmented test-time scaling method to improve LLM's agentic reasoning performance by adding tools to encourage models to revisit. We expect our benchmark and the agentic reasoning framework to aid future studies of understanding and pushing the boundaries of agentic reasoning.
title GSM-Agent: Understanding Agentic Reasoning Using Controllable Environments
topic Artificial Intelligence
Machine Learning
url https://arxiv.org/abs/2509.21998