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Course overview

LLM Cost Engineering

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1 · Spending less on the same work

1Token economics of an agent fleet
2Prompt caching as system design
Exercise answers
- Answer: Simulate cache hits and costs for a matter
- Answer: Measure warm-then-fan-out on your subscription
3Trimming and compacting context
4Batch, flex and fast tiers

2 · Changing the model, and governing the spend

5Cost-quality curves, routing and cascades
6Distilling into small models
7Self-hosting break-even
8Attribution, budgets and alerts

CapstoneCost-engineer an agent pipeline Reference implementation

Answers Lesson 2: Prompt caching as system design

Step-by-step answer

Core 75 min6 steps

Simulate cache hits and costs for a matter

Back to the exercise

Previous answerCalibrate the model against real token counts Next answer Measure warm-then-fan-out on your subscription

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