Audit of GSO, SWE-Perf and SWE-fficiency reveals that reference patches satisfy validity rules across machines for only 39/102, 11/140 and 411/498 tasks respectively, public submissions beat references on 85.3% of replay-valid tasks, and scoring rules cause ranking disagreements.
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Are Performance-Optimization Benchmarks Reliably Measuring Coding Agents?
Audit of GSO, SWE-Perf and SWE-fficiency reveals that reference patches satisfy validity rules across machines for only 39/102, 11/140 and 411/498 tasks respectively, public submissions beat references on 85.3% of replay-valid tasks, and scoring rules cause ranking disagreements.