---
title: "Retrieval-augmented generation"
description: "Build a grounded answer from a small refund policy. See how chunk boundaries, document freshness, and missing evidence affect the result."
canonical_url: "https://fanout.sh/ai-engineering/lessons/llms-and-rag"
md_url: "https://fanout.sh/ai-engineering/lessons/llms-and-rag.md"
access: "public"
---

# Retrieval-augmented generation

Build a grounded answer from a small refund policy. See how chunk boundaries, document freshness, and missing evidence affect the result.

---
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