Usage billing on events. Ingest, aggregate, bill on the result.

Events are immutable records with a customer ID and metadata. A meter filters and aggregates them, and a metered price puts the result on the next invoice.

Cost insightsAttach a _cost to any event and the same pipeline returns profit and lifetime value per customer.
meter · llm_usagecustomer · lumen · sample events
sum(metadata.tokens)
0tokens over the last 7 events

Add up a metadata property: tokens, bytes, seconds.

cost to serve$0.00

Subscriptions, end to end. Renewals, proration, dunning and benefits.

At the end of every cycle, Polar generates a new order with tax and any active discount applied, then charges the saved payment method without your code in the loop.

Lumen · Pro $20 → Growth $100 · upgraded on day 12 of 30 · sample
$48.00

The new plan starts on day 12 and the prorated difference for the remaining 18 days is charged right away.

When a renewal charge fails, the subscription moves to past_due and Polar runs a four-attempt retry schedule before revoking benefits.

Seats, credits, trials, discounts. The pricing tools around a plan.

Seats

One billing manager, many seats. Invitations, claims and proration are handled for you.

Credits

Customers prepay. Credits draw down per event.

Trials

Capture the card. Convert when the trial ends.

LAUNCH20 · 20% off

Discounts

Codes, links or API. Once, monthly or forever.

Balance payable now · net of every fee · sample data$9,311.40
datetypeentryamountfee
Sep 30orderLumen · Pro plan$20.00−$1.16
Sep 30orderAcme Inc · usage, 0.9M tokens$148.00−$6.02
Sep 29orderNorthwind · Growth plan$100.00−$4.20
Sep 29refundLumen · Pro plan−$20.00$0.00
Sep 28disputeNorthwind · Growth plan−$100.00−$15.00
Sep 26payoutSEB **** 9128−$2,400.00−$6.25

Money in, money out. Balance, ledger, fees and payouts.

Every order, refund, fee and payout is recorded on a single page, with each fee shown next to the entry that triggered it.

Every fee, listed

From usage to revenue. Integrate in an afternoon.

One integration covers metering, subscriptions, tax and payouts. Start on the free plan and move up when the numbers say so.