Beyond Success Rate: Cost-Aware Evaluation of Offensive and Defensive Security Agents

Security-agent evaluations commonly measure peak offensive capability under generous inference budgets, emphasizing vulnerability discovery, exploit development, penetration testing, and CTF completion. Such measurements are useful but incomplete: in operational security, every reasoning step, tool call, telemetry query, and enrichment request consumes budget. We evaluate language-model security agents through this cost-success lens on offensive Cybench challenges and defensive Splunk BOTS v1 in

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ethics.ai (16 July 2026), “Beyond Success Rate: Cost-Aware Evaluation of Offensive and Defensive Security Agents,” evidence record 11920, https://ethics.ai/record/11920 (originally published by HuggingFace Daily Papers).

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