LangChain Founder: Evals Work for Narrow Tasks but Break Down for Autonomous Agents

hwchase17 · x · 2026-10-09

LangChain founder hwchase17 responds to Hunter Gerlach's loop: 1) create high-value evals, 2) realize you're fighting Goodhart's Law, 3) repeat. His initial take: eval-driven development works for narrowly scoped tasks but fails for more autonomous agents — raising the open question of how to actually hill-climb those.

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