CourseRetrieval-Augmented Generation: The Complete Course · Module 12: Production Engineering · part 83 of 95
Part 83 · Module 12: Production Engineering

Lesson 2: What each answer costs, and how to spend less

34 min read·13 Oct 2026
Module 12 · Lesson 2 · About 50 minutes · Needs: Module 9 Lesson 1 (the answer contract) and Module 11 Lesson 2 (scoring answers); Modules 7 and 8 help (the rewrite, the reranker)

The situation

On Friday 9 October 2026 Ellie Shaw asks whether her repeated E7 fault is covered. Hollin Answers rewrites her message, searches, reranks and answers. Owen Fletcher, the Finance Manager, asks one question before the November pilot: "What does that answer cost, and what will a month of them cost?"

Grace wants the strong model, because a wrong answer costs more than a token. This lesson gives both of them numbers. The Hollin data is simulated.

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This course is bought on its own, once, and stays readable afterwards, including the parts added to it later.