evaluation framework, evaluation-driven development (EDD), Evaluations, llm-as-a-judge, llm-evaluation, prompt evaluation, regression testing for llms

Prompt templates as configs, not code

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This post was written in April 2026. Cloud products, feature maturity, and recommended patterns change over time, so readers should treat these examples as directional guidance. For teams already using Arize, there is a natural extension of that pattern. Prompt Playground can sit upstream of the config layer as the place where prompts are edited, compared, and versioned before they are promoted into whatever config system the company already trusts in production.

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