TravelPlanner: A Benchmark for Real-World Planning with Language Agents

Authors: Jian Xie, Kai Zhang, Jiangjie Chen, Tinghui Zhu, Renze Lou, Yuandong Tian, Yanghua Xiao, Yu Su

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Results of the summarizing process for the arXiv paper: 2402.01622v1

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In the pursuit of artificial intelligence, planning has always been a fundamental aspect. Earlier AI agents primarily operated in constrained settings due to the lack of cognitive substrates required for human-level planning. However, recent advancements in language agents powered by large language models (LLMs) have showcased intriguing capabilities such as tool usage and reasoning. The question arises: can these language agents effectively engage in planning tasks in more intricate scenarios? These scenarios were previously beyond the reach of traditional AI agents. To address this query, a new benchmark called TravelPlanner has been introduced. It focuses specifically on travel planning as a common real-world scenario. This benchmark offers a comprehensive sandbox environment with various tools to access nearly four million data records. It also includes 1,225 meticulously curated planning intents and reference plans to facilitate evaluations. Despite the promising potential of language agents, comprehensive assessments reveal that current models still struggle with handling complex planning tasks. Even GPT-4, one of the most advanced language models available, only achieves a success rate of 0.6% in this challenging benchmark. Language agents face difficulties in maintaining focus on the task at hand and utilizing appropriate tools for information gathering while managing multiple constraints simultaneously. Nevertheless, it is crucial to acknowledge that the mere ability of language agents to tackle such intricate problems represents significant progress in the field of artificial intelligence. While TravelPlanner presents a formidable challenge for existing language agents, it also serves as a valuable testbed for future advancements in this domain. The study "TravelPlanner: A Benchmark for Real-World Planning with Language Agents" authored by Jian Xie, Kai Zhang, Jiangjie Chen, Tinghui Zhu, Renze Lou, Yuandong Tian, Yanghua Xiao and Yu Su provides insights into the limitations and potentials of current language models when applied to complex planning tasks. This work signifies an ongoing effort towards enhancing the capabilities of AI systems for real-world applications requiring sophisticated planning abilities.
AI-generated keywords: Artificial Intelligence Planning Language Agents TravelPlanner Real-World Applications

AI-generated Key Points

  • Planning is a fundamental aspect in the pursuit of artificial intelligence.
  • Recent advancements in language agents powered by large language models (LLMs) have shown capabilities in tool usage and reasoning.
  • A new benchmark called TravelPlanner has been introduced to assess the ability of language agents in complex planning tasks, focusing on travel planning as a real-world scenario.
  • Despite promising potential, current language models struggle with handling complex planning tasks, with even advanced models like GPT-4 achieving a low success rate in the benchmark.
  • Language agents face challenges in maintaining focus, utilizing appropriate tools for information gathering, and managing multiple constraints simultaneously.
  • The study "TravelPlanner: A Benchmark for Real-World Planning with Language Agents" provides insights into the limitations and potentials of current language models when applied to complex planning tasks.
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Abstract: Planning has been part of the core pursuit for artificial intelligence since its conception, but earlier AI agents mostly focused on constrained settings because many of the cognitive substrates necessary for human-level planning have been lacking. Recently, language agents powered by large language models (LLMs) have shown interesting capabilities such as tool use and reasoning. Are these language agents capable of planning in more complex settings that are out of the reach of prior AI agents? To advance this investigation, we propose TravelPlanner, a new planning benchmark that focuses on travel planning, a common real-world planning scenario. It provides a rich sandbox environment, various tools for accessing nearly four million data records, and 1,225 meticulously curated planning intents and reference plans. Comprehensive evaluations show that the current language agents are not yet capable of handling such complex planning tasks-even GPT-4 only achieves a success rate of 0.6%. Language agents struggle to stay on task, use the right tools to collect information, or keep track of multiple constraints. However, we note that the mere possibility for language agents to tackle such a complex problem is in itself non-trivial progress. TravelPlanner provides a challenging yet meaningful testbed for future language agents.

Submitted to arXiv on 02 Feb. 2024

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