API Pricing Tier Calculator
Design a sustainable monthly API plan price from included usage, utilization, fixed costs, fees, and target margin.
Editable usage, rate, and operating assumptions
Scenario totals and unit economics
Price included token bundles
API Pricing Tier Calculator
Turn included usage and expected utilization into a minimum monthly plan and overage price.
Frequently asked questions
Practical answers for applying this calculator to a production API billing or usage plan.
Should plan price use included or expected usage?
Use expected utilization for the base plan forecast, but stress-test against full included usage so heavy customers do not create unacceptable losses.
How should overage be priced?
Overage should cover incremental delivery cost, payment effects, support, risk, and the desired contribution margin while remaining easy to explain.
What fixed costs belong in a pricing tier?
Include infrastructure, observability, support, billing systems, security, and product operations that are not already captured in per-token cost.
Related API billing guides
Read the concepts behind the calculator and adapt the examples to your own API pricing model.
How to Price an API: Cost, Margin and Billing Models
Follow a step-by-step method to choose a billable unit, calculate delivery cost, set margin, design free tiers, and publish sustainable paid API plans.
Read guideAPI Fees & Charges Explained: Rates and Invoice Examples
Understand API fees and charges by request, token, credit, and plan, including free tiers, overage, rounding, and worked invoice lines.
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