In this study, we explore the potential of Multimodal Large Language Models (MLLMs) in improving embodied decision-making processes for agents. While Large Language Models (LLMs) have been widely used due to their advanced reasoning skills and vast world knowledge, MLLMs like GPT4-Vision offer enhanced visual understanding and reasoning capabilities. We investigate whether state-of-the-art MLLMs can handle embodied decision-making in an end-to-end manner and whether collaborations between LLMs and MLLMs can enhance decision-making. To address these questions, we introduce a new benchmark called PCA-EVAL, which evaluates embodied decision-making from the perspectives of Perception, Cognition, and Action. Additionally, we propose HOLMES, a multi-agent cooperation framework that allows LLMs to leverage MLLMs and APIs to gather multimodal information for informed decision-making. We compare end-to-end embodied decision-making and HOLMES on our benchmark and find that the GPT4-Vision model demonstrates strong end-to-end embodied decision-making abilities, outperforming GPT4-HOLMES in terms of average decision accuracy (+3%). However, this performance is exclusive to the latest GPT4-Vision model, surpassing the open-source state-of-the-art MLLM by 26%. Our results indicate that powerful MLLMs like GPT4-Vision hold promise for decision-making in embodied agents, offering new avenues for MLLM research.

翻译：在本研究中，我们探索了多模态大语言模型在提升智能体具身决策过程中的潜力。尽管大语言模型因其高级推理能力和广泛的世界知识而被广泛使用，但GPT4-Vision等多模态大语言模型提供了更强的视觉理解和推理能力。我们研究了最先进的多模态大语言模型能否以端到端方式处理具身决策，以及大语言模型与多模态大语言模型的协作能否增强决策能力。为解答这些问题，我们引入了一个名为PCA-EVAL的新基准，从感知、认知和行动三个维度评估具身决策。此外，我们提出了HOLMES——一种多智能体协作框架，允许大语言模型利用多模态大语言模型和应用程序接口收集多模态信息以做出明智决策。我们在该基准上比较了端到端具身决策与HOLMES，发现GPT4-Vision模型展现出强大的端到端具身决策能力，在平均决策准确率上超越GPT4-HOLMES（+3%）。然而，这一性能仅适用于最新的GPT4-Vision模型，超出开源最先进多模态大语言模型26%。我们的结果表明，像GPT4-Vision这样的强大多模态大语言模型在具身智能体的决策中具有潜力，为多模态大语言模型研究开辟了新途径。