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Why RAG fails in production — and the eval harness that fixes it

Most retrieval-augmented systems break silently. Here is how we measure and harden them before launch.

Retrieval-augmented generation demos well and degrades quietly. Chunking drift, stale indexes and ambiguous queries erode answer quality long before anyone files a ticket.

We treat RAG like any production system: a golden question set, automated grading for faithfulness and retrieval recall, and regression gates in CI so every index or prompt change is scored before it ships.

The result is a system whose quality is a number on a dashboard rather than a feeling — and a team that can improve it deliberately.