Look Before You Leap: Autonomous Exploration for LLM Agents

Hugging Face Daily Papers Papers

Summary

This paper identifies autonomous exploration as a critical capability for LLM agents and proposes the Explore-then-Act paradigm, which decouples information gathering from task execution to improve adaptability and real-world performance. It also introduces Exploration Checkpoint Coverage as a verifiable metric for evaluating exploration breadth.

Large language model based agents often fail in unfamiliar environments due to premature exploitation: a tendency to act on prior knowledge before acquiring sufficient environment-specific information. We identify autonomous exploration as a critical yet underexplored capability for building adaptive agents. To formalize and quantify this capability, we introduce Exploration Checkpoint Coverage, a verifiable metric that measures how broadly an agent discovers key states, objects, and affordances. Our systematic evaluation reveals that agents trained with standard task-oriented reinforcement learning consistently exhibit narrow and repetitive behaviors that impede downstream performance. To address this limitation, we develop a training strategy that interleaves task-execution rollouts and exploration rollouts, with each type of rollout optimized by its corresponding verifiable reward. Building on this training strategy, we propose the Explore-then-Act paradigm, which decouples information-gathering from task execution: agents first utilize an interaction budget to acquire grounded environmental knowledge, then leverage it for task resolution. Our results demonstrate that learning to systematically explore is imperative for building generalizable and real-world-ready agents.
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Paper page - Look Before You Leap: Autonomous Exploration for LLM Agents

Source: https://huggingface.co/papers/2605.16143

Abstract

Agents trained with standard reinforcement learning exhibit narrow behaviors due to premature exploitation, but systematic exploration training improves adaptability and real-world performance.

Large language model based agents often fail in unfamiliar environments due to premature exploitation: a tendency to act on prior knowledge before acquiring sufficientenvironment-specific information. We identifyautonomous explorationas a critical yet underexplored capability for building adaptive agents. To formalize and quantify this capability, we introduceExploration Checkpoint Coverage, a verifiable metric that measures how broadly an agent discovers key states, objects, and affordances. Our systematic evaluation reveals that agents trained with standard task-orientedreinforcement learningconsistently exhibit narrow and repetitive behaviors that impede downstream performance. To address this limitation, we develop a training strategy that interleaves task-execution rollouts andexplorationrollouts, with each type of rollout optimized by its correspondingverifiable reward. Building on this training strategy, we propose theExplore-then-Act paradigm, which decouples information-gathering fromtask execution: agents first utilize aninteraction budgetto acquire grounded environmental knowledge, then leverage it for task resolution. Our results demonstrate that learning to systematically explore is imperative for building generalizable and real-world-ready agents.

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