ActionReasoning: Robot Action Reasoning in 3D Space with LLM for Robotic Brick Stacking

Fuente: arXiv
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Autori principali: Wang, Guangming, Ying, Qizhen, Jing, Yixiong, Wysocki, Olaf, Sheil, Brian
Natura: Preprint
Pubblicazione: 2026
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author Wang, Guangming
Ying, Qizhen
Jing, Yixiong
Wysocki, Olaf
Sheil, Brian
author_facet Wang, Guangming
Ying, Qizhen
Jing, Yixiong
Wysocki, Olaf
Sheil, Brian
contents Classical robotic systems typically rely on custom planners designed for constrained environments. While effective in restricted settings, these systems lack generalization capabilities, limiting the scalability of embodied AI and general-purpose robots. Recent data-driven Vision-Language-Action (VLA) approaches aim to learn policies from large-scale simulation and real-world data. However, the continuous action space of the physical world significantly exceeds the representational capacity of linguistic tokens, making it unclear if scaling data alone can yield general robotic intelligence. To address this gap, we propose ActionReasoning, an LLM-driven framework that performs explicit action reasoning to produce physics-consistent, prior-guided decisions for robotic manipulation. ActionReasoning leverages the physical priors and real-world knowledge already encoded in Large Language Models (LLMs) and structures them within a multi-agent architecture. We instantiate this framework on a tractable case study of brick stacking, where the environment states are assumed to be already accurately measured. The environmental states are then serialized and passed to a multi-agent LLM framework that generates physics-aware action plans. The experiments demonstrate that the proposed multi-agent LLM framework enables stable brick placement while shifting effort from low-level domain-specific coding to high-level tool invocation and prompting, highlighting its potential for broader generalization. This work introduces a promising approach to bridging perception and execution in robotic manipulation by integrating physical reasoning with LLMs.
format Preprint
id arxiv_https___arxiv_org_abs_2602_21161
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle ActionReasoning: Robot Action Reasoning in 3D Space with LLM for Robotic Brick Stacking
Wang, Guangming
Ying, Qizhen
Jing, Yixiong
Wysocki, Olaf
Sheil, Brian
Robotics
Classical robotic systems typically rely on custom planners designed for constrained environments. While effective in restricted settings, these systems lack generalization capabilities, limiting the scalability of embodied AI and general-purpose robots. Recent data-driven Vision-Language-Action (VLA) approaches aim to learn policies from large-scale simulation and real-world data. However, the continuous action space of the physical world significantly exceeds the representational capacity of linguistic tokens, making it unclear if scaling data alone can yield general robotic intelligence. To address this gap, we propose ActionReasoning, an LLM-driven framework that performs explicit action reasoning to produce physics-consistent, prior-guided decisions for robotic manipulation. ActionReasoning leverages the physical priors and real-world knowledge already encoded in Large Language Models (LLMs) and structures them within a multi-agent architecture. We instantiate this framework on a tractable case study of brick stacking, where the environment states are assumed to be already accurately measured. The environmental states are then serialized and passed to a multi-agent LLM framework that generates physics-aware action plans. The experiments demonstrate that the proposed multi-agent LLM framework enables stable brick placement while shifting effort from low-level domain-specific coding to high-level tool invocation and prompting, highlighting its potential for broader generalization. This work introduces a promising approach to bridging perception and execution in robotic manipulation by integrating physical reasoning with LLMs.
title ActionReasoning: Robot Action Reasoning in 3D Space with LLM for Robotic Brick Stacking
topic Robotics
url https://arxiv.org/abs/2602.21161