METR · March 15, 2024

Capability elicitation: document harness fixes without hiding failed runs

Why it matters

METR’s March 2024 guidance distinguishes apparent failures caused by infrastructure or tool problems from failures that reveal a capability limit, while recognizing cases where the distinction depends on the intended deployment. It recommends improving an agent on development tasks and inspecting traces before interpreting evaluation results. The proposed failure taxonomy had not been empirically validated at publication. Correcting a setup bug can improve measurement, but supplying task-specific help during a held-out run changes what that result measures.

My takeaway: Keep the original trace and score when investigating a failure. Record every harness patch, human hint and rerun, then report corrected results separately from unassisted attempts. Require evidence before attributing an unexpectedly strong result to benchmark memorization.
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