Open LLM Systems Engineering courseReviewed Aug 23, 2026
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LAB · Operations

Context & Cost Planner

Model input/output tokens, cache, traffic, your own prices, and error margin per day and month.

Suggested time
10 min
Output artifact
A reproducible budget without stale embedded prices.
Privacy
All figures are calculated on-device.

Local educational tool. Validate every result before production use.

When to use it

Cost planner

Use it during capacity design or whenever traffic, context length, caching, or provider prices change.

How to use it well

  1. 1

    Enter a real case without secrets or personal data.

  2. 2

    Run, inspect, and challenge the assumptions; the output is not automatic truth.

  3. 3

    Save the artifact in your project and turn it into a reviewable test or decision.