billed / month
vs on-demand
commitment used
saved over term

Savings by actual usage

The same commitment saves or wastes money depending only on how much you use. Below the floor you pay for unused commitment; above it the discount compounds.

On-demand usageBilled w/ commitUtilizationMonthly save

Commit to your baseline, not your peak

A committed-use discount is a bet that you will keep spending. The provider drops your per-unit rate; in return you promise to spend at least a fixed amount, and most commitments are use-it-or-lose-it — spend less and you still pay the floor. So the deal only works when your dependable, every-month usage is already at or above the commitment. The break-even is your list-price usage equal to the floor: above it the discount is pure savings, below it you are subsidising the provider. Size the commitment to the lowest month you are sure of, then forecast growth on the API cost forecast calculator and compare pay-as-you-go tiers on the overage calculator.

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