Operations / AI Cost Engineering

AI Cost Audit Worksheet

Audit your AI API spend, identify the highest-impact cost reduction opportunities, and calculate projected savings before writing code.

Part 1: Baseline Measurement

Total AI API spend last month $
Total revenue last month $
Avg tokens per request (input)
Avg tokens per request (output)
Avg requests per day
% requests to most expensive model %
Current IER --% Enter numbers

Part 2: Prompt Caching Opportunity

Token count of stable context block
Token count of variable portion
Provider discount rate
Cache ratio --%
Estimated monthly savings from caching $--

If cache ratio > 50% and monthly API spend > $200, implement caching before anything else.

Part 3: Model Routing Opportunity

Query TypeVolume/DayNeeds Frontier?Route Candidate?
Routing ratio (routable / total volume) %
Estimated monthly routing savings $--

Part 4: Heavy User Risk

Usage Cap Calculator

Plan revenue ($/month) $
Target IER (%) %
Cost per request ($) $
Recommended monthly cap -- credits/month

Part 5: Prioritized Actions

Implement first (highest ROI, lowest effort)

Implement second

Implement third (situational)