What is a "head of Evals"? The invented job title, explained

danshipper · x · 2026-10-23

hammermt explains his self-invented job title: Evals means evaluating how well AI agents do what you want. The work involves collecting examples of tasks people use or want to use AI for, and defining good vs. bad outcomes — sometimes via benchmarks, sometimes via targeted experiments on things AI can't yet do. The job usually means either making what AI already does cheaper without losing quality, or getting AI to do something new; the latter is more fun but short-lived, as models typically gobble up these solutions within 6-12 months.

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