Meter everything. Pay per event, not per dollar.

The independent metering and rating engine for usage-based pricing. Per-event pricing, an Apache-2.0 open core, and credit primitives built for the AI era — the calculation layer that never touches your funds.

See pricingRead the docs

Pre-launch — the v1 open core is built and tested; the hosted API opens at launch.

Abacus product illustration

Why Abacus

Built for developers who want the job done right — and to see exactly how it was done.

Priced per event, never as a % of revenue

On $1M/month billed with 10M events, a 0.8%-of-volume competitor tier costs ~$8,400/month for the metering layer alone. Abacus Growth is $49 flat — same workload, ~171× cheaper.

AI-native credit primitives

Real-time credit burndown with hard stops — the API key dies the moment credits hit zero — plus prepaid wallets and overage policy hooks. Built for the agent era, where machines consume the meter.

Apache-2.0 open core

Copyleft-free licensing that enterprise legal teams can actually approve. Commercial moat lives in hosted features, not the license.

Neutral metering, multi-rail

Equally good on Stripe, Adyen, or crypto rails. Abacus stays the calculation layer — no money-transmitter risk, no competing with your payment rail.

Simple, flat pricing

Monthly billing, cancel anytime. No per-seat games, no surprise bills.

Starter — $0/month

The funnel: real metering, free, with a hard cap.

Growth — $49/month

For SaaS and AI companies billing real usage.

Scale — $299/month

For high-volume and enterprise metering.

Compare all tiers

Start in minutes

Copy-paste quickstart in the docs — real requests against the real API.

Quickstart guide

Abacus pricing

Straightforward plans — pick the tier that fits and check out securely. Every plan is described in full on the pricing page.

Growth

$49/mo

  • 50M events / month included
  • Real-time credit burndown with hard stops
  • Stripe integration (push rated invoices to Stripe Billing)
  • Email support
  • Overage: $1.50 per additional 1M events (flat, never % of revenue)
Get Growth

Scale

$299/mo

  • 1B events / month included
  • Everything in Growth, plus:
  • Prepaid wallets (overage policy engine on the roadmap)
  • White-label dashboard — on the roadmap
  • Dedicated support channel
  • Custom retention windows and data warehouse export — on the roadmap
Get Scale

Compare plans in detail