SWE-Duel: self-scaling adversarial arena has coding agents hide and catch bugs
Consistent_Fox_2990 · reddit · 2026-10-16
SWE-Duel (arXiv 2610.12569) is a contamination-resistant coding-agent arena: the Red agent adds a feature with a subtle hidden bug plus sealed tests, validated by requiring a fresh session of the same agent to fix it blind; the Blue agent must catch it in review. After an 11-participant round-robin, GPT-5.5 and Claude Opus 4.8 lead the Bradley-Terry leaderboard. Leaderboard, paper, and source are open.
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