CyberArena
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- CyberArena tests AI agents in live cyber attack-defense games
CyberArena evaluated 12 model-and-harness combinations through 22 batches and 466 valid cybersecurity games, with agents attacking opponents while protecting their own services. The research team reported GPT-5.6 Sol running on Codex first with a 78.6 relative score, followed by Claude Opus 5 running on Claude Code at 73.8. Its contrast with static tasks showed capture rates falling to 52%, 37%, and 35% by the third adversarial round for the three models that solved all 30 selected tasks in solo mode.
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