AuditBench: Evaluating Alignment Auditing Techniques on Models with Hidden Behaviors

Abhay Sheshadri, Aidan Ewart, Kai Fronsdal, Isha Gupta, Samuel R. Bowman, Sara Price, Sam Marks, Rowan Wang · 2026 · Anthropic

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Across 56 models with implanted hidden behaviors, scaffolded black-box tools found them most often, but investigator agents underused good evidence.

Questions it bears on

• An agenda beyond the Assistant