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Your JSON Mode Is Not a Schema: Four Structured-Output Myths and a Validation Gate

A free model answered my extraction prompt fast. The JSON parsed cleanly. My pipeline still crashed ten minutes later. The ticket id came back as an integer. The hours field was the string "three" . JSON mode did its job. My schema did nothing at all. I keep relearning this lesson. So I built a gat…

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  1. 2026-11-06 14:53 · DEV Community — AI
    Your JSON Mode Is Not a Schema: Four Structured-Output Myths and a Validation Gate

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