🛠️ Tool
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Paid
Intermediate
Why we picked it If you decide usage pricing is right, this is real billing infrastructure that meters events in real time and lets you set configurable alerts and limits, which is exactly what keeps a surprise bill from ever landing. It is production billing for consumption products (used by teams like OpenAI and Fly.io), so you are not building metering, caps, and invoicing from scratch. Open-source Lago and Stripe's own metered billing are worth comparing if you want to self-host or start simpler.
Metronome: Usage-Based Billing Platform
From Metronome by Metronome (now part of Stripe) Product site, plus docs
- Real-time metering plus configurable spend alerts and limits means customers see cost as it accrues, not after the invoice, which is the core defense against bill shock.
- It handles the hard parts of consumption billing (event ingestion, pricing changes, true-ups, invoicing) so you ship pricing changes without a billing rebuild.
- Now part of Stripe, so weigh it against Stripe's built-in metered billing and open-source options like Lago before you commit.