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Deep dives on AI & data in production.

Working documents on RAG systems, autonomous agents, evaluation, and shipping ML that stays reliable - the long-form version of how we build.

Evaluation

Evaluating AI Systems in Production

A field guide to evaluating LLM and ML systems in production: eval sets that mirror reality, metrics that matter, LLM-as-judge done safely, and regression gates that hold.

Welzin Team · June 28, 2026 · 7 min read

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