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Main Authors: Ritchie, Logan, Mehta, Sushant, Heiner, Nick, Yu, Mason, Chen, Edwin
Format: Preprint
Published: 2026
Subjects:
Online Access:https://arxiv.org/abs/2601.09032
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author Ritchie, Logan
Mehta, Sushant
Heiner, Nick
Yu, Mason
Chen, Edwin
author_facet Ritchie, Logan
Mehta, Sushant
Heiner, Nick
Yu, Mason
Chen, Edwin
contents The advancement of large language model (LLM) based agents has shifted AI evaluation from single-turn response assessment to multi-step task completion in interactive environments. We present an empirical study evaluating frontier AI models on 150 workplace tasks within a realistic e-commerce RL environment from Surge. Our analysis reveals an empirically-derived \emph{hierarchy of agentic capabilities} that models must master for real-world deployment: (1) tool use, (2) planning and goal formation, (3) adaptability, (4) groundedness, and (5) common-sense reasoning. Even the best-performing models fail approximately 40\% of the tasks, with failures clustering predictably along this hierarchy. Weaker models struggle with fundamental tool use and planning, whereas stronger models primarily fail on tasks requiring contextual inference beyond explicit instructions. We introduce a task-centric design methodology for RL environments that emphasizes diversity and domain expert contributions, provide detailed failure analysis, and discuss implications for agent development. Our findings suggest that while current frontier models can demonstrate coherent multi-step behavior, substantial capability gaps remain before achieving human-level task completion in realistic workplace settings.
format Preprint
id arxiv_https___arxiv_org_abs_2601_09032
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle The Hierarchy of Agentic Capabilities: Evaluating Frontier Models on Realistic RL Environments
Ritchie, Logan
Mehta, Sushant
Heiner, Nick
Yu, Mason
Chen, Edwin
Artificial Intelligence
The advancement of large language model (LLM) based agents has shifted AI evaluation from single-turn response assessment to multi-step task completion in interactive environments. We present an empirical study evaluating frontier AI models on 150 workplace tasks within a realistic e-commerce RL environment from Surge. Our analysis reveals an empirically-derived \emph{hierarchy of agentic capabilities} that models must master for real-world deployment: (1) tool use, (2) planning and goal formation, (3) adaptability, (4) groundedness, and (5) common-sense reasoning. Even the best-performing models fail approximately 40\% of the tasks, with failures clustering predictably along this hierarchy. Weaker models struggle with fundamental tool use and planning, whereas stronger models primarily fail on tasks requiring contextual inference beyond explicit instructions. We introduce a task-centric design methodology for RL environments that emphasizes diversity and domain expert contributions, provide detailed failure analysis, and discuss implications for agent development. Our findings suggest that while current frontier models can demonstrate coherent multi-step behavior, substantial capability gaps remain before achieving human-level task completion in realistic workplace settings.
title The Hierarchy of Agentic Capabilities: Evaluating Frontier Models on Realistic RL Environments
topic Artificial Intelligence
url https://arxiv.org/abs/2601.09032