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Velobase is an open-source, high-performance billing ledger designed for AI applications. When you build AI apps, billing is hard because you don’t know the exact cost upfront (e.g., streaming LLM output). Velobase solves this by acting as a high-speed “credit bank” for your application.

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Core Capabilities

Safely freeze an estimated amount of credits before an AI generation, and consume the exact amount afterward. Zero risk of negative balances.
Built to handle thousands of token deductions per second without race conditions.
Manage customers, top up balances, and deduct credits purely via REST API.

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Let’s Build

Don’t read about it — build with it. Head over to the Quickstart to make your first billing API call in under 5 minutes.

Quickstart

Make your first API call in under 5 minutes.

Depositing credits

Wallet categories, validity periods, and balance management.

Direct deduction

Charge immediately when cost is known upfront.

Staged deduction

Freeze a budget, then settle the exact cost after.