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About this paper

Mingxuan Li, Huanzhi Mao, Qiuyang Mang, Hanchen Li, Joseph E. Gonzalez, Alex Dimakis

EnvOpt optimizes a stationary agent environment by having a coding agent inspect trajectories and edit information, tools, or their organization while keeping the target model and harness fixed. On AutomationBench, Claude Haiku 4.5’s pass rate rose from 2.33% to 16.67%, while dollar cost fell from $42.36 to $11.55 across three runs; this result is limited to the tested setup.

Summary by alphaXiv.

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