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When Can Agents Forget Their Reasoning? ICLR for Long-Horizon Agent Context Compression

arXiv · AI, language, vision and robotics · article · Sep 24, 2026 · UTC

Long horizon language model agents continually accumulate reasoning history, increasing context length and inference cost even after earlier decisions have been executed and observed. Unlike static Chain of Thought compression, removing historical reasoning can change future actions and the resulting interaction trajectory. We study when such reasoning can be safely forgotten. We propose Interaction Aware Compression for Long Horizon Reasoning (ICLR), a training free online method that ranks reasoning blocks using frozen proxy entropy while preserving actions, tool calls, and observations. On

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First collected: 2026-09-25T06:12:46.948Z. This is not the publication date.