https://arxiv.org/abs/2506.19500 NaviAgent: Bilevel Planning on Tool Navigation Graph for Large-Scale OrchestrationLarge language models (LLMs) have recently demonstrated the ability to act as function call agents by invoking external tools, enabling them to solve tasks beyond their static knowledge. However, existing agents typically call tools step by step at a timearxiv.org ICLR 2026에도 제출된 것 ..