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What Makes Good Agentic Data? An ACE Lens on Data Generation for LLM Agents

arXiv · AI, language, vision and robotics · article · Aug 27, 2026 · UTC

LLM agents increasingly rely on generated interaction data to learn how to interact with external environments. Agentic data generation must maintain consistency among environments, tasks, interactions, and success signals while producing experience that is useful rather than merely abundant. Existing work spans many agent domains, but domain-centered organization and heterogeneous evaluation often obscure common generation mechanisms and conflate candidate construction with verification and selection. This work develops a two-level framework for the field. First, we represent agentic data as

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