Prompt templates and versioning

Someone tweaks one sentence in a prompt on Friday. On Monday refunds are up 30% and nobody knows what changed. Prompts are code that decides how your product behaves, so treat them like code.

In this lesson you'll learn to

Turn a prompt into a template with named variables that fails loudly when one is missing.
Keep prompts in version control, separate from application code, with the model settings they were tested with.
Log which prompt version produced every output, so you can trace and roll back changes.
Test prompt changes before release with rendering tests and an eval run.

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