Overage Pricing
Past your included calls, paid plans continue at a per-call rate — up to a spend cap you set. The free plan stops instead of charging you.
| Plan | Included calls / month | Beyond that |
|---|---|---|
| Developer | 100 | Stops — no charge |
| Launch | 50,000 | $0.001 per call |
| Scale | 500,000 | $0.0005 per call |
| Plan | 10,000 extra calls cost |
|---|---|
| Developer | Not available — upgrade to continue |
| Launch | $10.00 |
| Scale | $5.00 |
Your spend cap
Every account has a monthly spend cap covering overage, set in the dashboard. It is a real limit, not a notification threshold: once overage charges would exceed it, further calls return HTTP 402 with the cap named in the message, until you raise it or the billing period rolls over.
Spending exactly up to the cap is allowed — it is a ceiling you may reach, not one you may not touch.
Set it deliberately
A cap set too low turns a traffic spike into a guardrail outage on your side. A cap set too high turns a runaway loop in your own code into a bill. Pick a number you would be willing to pay in your worst plausible week, and read the 402 response as the signal it is.
The free plan stops rather than charging
Developer includes 100 calls a month and has no overage rate at all. At the limit, calls return HTTP 402 until the period rolls over or you move to Launch. You cannot accidentally incur a charge on it.
How overage is billed
Metered, then invoiced
Each overage call is metered as it happens at $0.001 on Launch and $0.0005 on Scale. The total appears on your next invoice alongside the subscription. Nothing is charged to your card mid-period.
Counted in whole calls, not estimates
Amounts are computed in integer fractions of a cent rather than in floating point, so a total is exactly the sum of its calls. There is no rounding drift to reconcile.
Refused calls are free
A request rejected for rate limiting, an invalid key, a suspended account or the spend cap is not metered and does not appear on your invoice.
The period follows your subscription
Your included calls reset when Stripe rolls your billing period, not on the first of the calendar month.
You are told before it starts
You get a dashboard notification at 80% and again at 100% of your included calls, so entering overage is never the first you hear of it.