Our AI tests passed but users found missing details: when evals don't match reality

Plastic_Secret1303 · reddit · 2026-10-26

A team built an AI tool that summarizes support chats. Internal tests looked good, but real users reported summaries missing important details. Root cause: their test examples didn't match real conversation patterns. They're now adding more real-world examples and having humans review selected outputs. The post asks how others ensure AI evals reflect actual user needs—a useful cautionary case of offline evals diverging from production.

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