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Dataset · Hugging Face

cesun/When2Tool

When2Tool Benchmark dataset for "LLM Agents Already Know When to Call Tools — Even Without Reasoning" (arXiv:2605.09252). Overview When2Tool is a benchmark of 18 environments designed to study when LLM agents should call tools. Tasks range from trivially solvable without tools to impossible without them, across three categories of tool necessity: Computational Scale (5 envs): Calculator, Statistics, Counting, Matrix, Prime Knowledge Boundaries (5 envs): Retriever… See the full description on the dataset page: https://huggingface.co/datasets/cesun/When2Tool.

Author / organizationcesun
License (as declared)mit
Downloads493 (as reported by Hugging Face)
Likes2
Created12 May 2026
Last updated at source13 May 2026
tool-useagentsllmbenchmark
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