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Benchmark Budgets Are Part of the Grader: A Paired Cost and Latency Gate for AI C++ Patches

Consider a pull request that turns a 12-line C++ change into a 40-line patch. Every golden case passes. CI is green. Two days later the review queue tells a different story: the patch needed three retries per case, pushed p95 compile time up by a third, and burned a quarter more tokens than the mod…

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  1. 2026-11-06 16:43 · DEV Community — AI
    Benchmark Budgets Are Part of the Grader: A Paired Cost and Latency Gate for AI C++ Patches

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