AI Gateway1 / 5
Learning AI cost
from the invoice
at month-end?
Too late. A budget is not a report —
it’s a gate.
it’s a gate.
apinizer.Every token counted, every budget enforcedAI Gateway2 / 5
The gate must run
before the call leaves.
Request arrives → estimated cost reserved up front
Stream ends → reconciled with actuals
Stops before the overrun, not after
We call it pre-flight reservation.
apinizer.Every token counted, every budget enforcedAI Gateway3 / 5
Not one counter.
Four tiers.
01
Credential + Organization
A key’s and an org’s total
02
Proxy + Project
App and project ceilings, separately
03
Tokens or USD
Per minute · hour · day · month
apinizer.Every token counted, every budget enforcedAI Gateway4 / 5
It warns you
before the invoice.
80%
threshold alarm
100%
ceiling action
4
actions on overflow
On overflow: block · downgrade to a cheaper model · alert · fail over.
apinizer.Every token counted, every budget enforcedAI Gateway5 / 5
When a runaway agent loop
starts at 3 AM?
Report-based system: you find out in the morning.
Pre-flight system: the budget closes, the team is alerted.
Pre-flight system: the budget closes, the team is alerted.
Do you govern AI spend
in real time?
in real time?
apinizer.Every token counted, every budget enforced← → to navigate