METR · October 20, 2026

Monitoring evaluations: test the deployed detection and response path

Why it matters

METR’s limited-access review of Anthropic’s August risk report questions whether isolated covert-capability benchmarks represent evasion of deployed monitoring. It recommends testing the complete monitoring system and considering influence on safety decisions. METR’s low-risk judgment for the covered models rests mainly on limited capabilities; it is not evidence that monitoring would detect higher risk.

My takeaway: Use an isolated replica of the deployment to test monitor coverage, escalation, and containment together. Include harmful actions framed as ordinary work and gaps between monitored components. Save traces and independently verify whether alerts arrived and actions stopped. Treat missing detection as a test failure, and keep model self-reviews separate from independent evidence.
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