Prompt-Induced Waste in Coding Agents: Reasoning Structure, Tool Behavior, and End-to-End Cost A Preregistered Two-Harness Benchmark
A preregistered benchmark isolating the causal effect of prompt formulation on agent work across six open-weight reasoning models and a frontier closed model is presented, consistent with recent evidence that consequential computation can occur without an interpretable trace.
A. Preregistered, Two-Harness Benchmark, Sarel Weinberger et al.
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