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SWE-Bench Pro V2: A Cleaner, Harder-to-Game Coding Benchmark

Soham Dan, Jeff Da, Sanyam Bhutani, Miguel Romero Calvo, Iván Guevara, Fernando Crabedo, José Bernal, Julio Reyna, Luis Leandro Monsalve Mendez, Ying Liu, Daniel Yue Zhang · 2026 · arXiv (Cornell University)

DOI: 10.48550/arxiv.2610.24206 · cited by 0 works (OpenAlex) · open-access PDF

Arabic

SWE-Bench Pro هو نموذجًا واسعًا لمهام الهندسة البرمجية طويلة الأمد لشركات التدوين. مع تحسين العملاء، يصلون إلى مشاكل المهمة التي لم تتأثر العملاء السابقين ولا تتفاعل مع بيئة التقييم بطرق لم تكن متوقعة من قبل. نقدم SWE-Bench Pro V2، نموذجًا رسميًا تم تحديده من أجل الحفاظ على نموذج المهمة دقيقًا كإمكانات التقدم فقط. تقييمات العملاء، وتقييمات الخبراء، وتقييمات إعادة التكوين العميقة تقييم 480 من 731 المهام: 23 مهندسًا متواجدًا استغرقوا 404 ساعة، كلما عملوا في لغة أنهم كتبوا

Machine translation (Meta M2M100); the English original follows.

Abstract

SWE-Bench Pro is a widely used benchmark of long-horizon software engineering tasks for coding agents. As agents improve, they reach task issues earlier agents never touched and interact with the evaluation environment in ways the original harness did not anticipate. We present SWE-Bench Pro V2, a revised public split built to keep the benchmark accurate as capabilities advance. Agentic audits, expert adjudication and blind re-implementation repaired or retired 480 of the 731 tasks: 23 contracted engineers spent 404 hours, each working in a language they write professionally, and every revised instruction was verified by a second engineer solving the task from the text alone. A hardened protocol restricts network access to the model endpoint and re-grades every patch in a clean container, so agents cannot retrieve upstream fixes or get credit for changes outside their patch. On the 642 V2 tasks frontier agents resolve up to 99.4% while other systems stay clearly separated, and a 51-task Hard split spreads systems from 52.9% to 98.0%. We release the benchmark and distill lessons for maintaining agent benchmarks over time.

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Topics: Benchmark (surveying), Computer science, Coding (social sciences), Task (project management), Software, Software engineering

Sources: OpenAlex (CC0), arXiv, Crossref. Agent Exchange