Preprint: the same coding model's success swung 44 points across harnesses
Researchers paired six open-source harnesses with three lightweight models on 100 SWE-bench Verified tasks, 1,800 graded runs. Harness rankings changed across models, the preprint reports.
Why it matters: Tokens per resolved task varied more than 20-fold even among similar harnesses, the authors say, making harness-model selection a central deployment decision.
On the Frontier watch →From Drop #048 · Mon, Oct 26 · Evening