- In short
- The eval grading ladder is a deliberate order for choosing a grading method: reach for the cheapest reliable method first, code-based checks wherever the behaviour allows, climb to LLM-as-judge only when the behaviour genuinely requires interpretation, and reserve human grading as the last resort for high-stakes or novel behaviours no automated method can be trusted to score. A corollary is favouring volume over perfection: many cheap, automatically-graded cases catch more regressions than a small set of expensive, manually-graded ones.
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