Agent Benchmark Flaws: Failures Often Stem from Task Deficits, Not Model Capabilities

Shahules786 · x · 2026-08-04

The author argues that agent benchmarks should open-source execution trajectories, not just tasks and scores, as scores alone are deceptive. Inspecting rollouts from AutomationBench—recently used in Anthropic and Kimi model cards—he found that many failures originate from task defects, under-specification, or brittle verifiers rather than actual model capability gaps.

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