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How are you versioning and testing prompts in production?

I've been taking Karpathy's "prompts are programs" idea literally on a few client builds, and treating prompts like production code changed how I work. Every prompt lives in git with a version tag. Each one has a small eval set of 20–50 real inputs with expected outputs that runs before any change…

Read the full story at r/PromptEngineering ↗

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  1. 2026-10-28 04:12 · r/PromptEngineering
    How are you versioning and testing prompts in production?

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