Hardcount

Hardcount is an open-source usage billing system that tracks AI token consumption, generates invoices, and calculates customer margins.

Hardcount is an open-source usage billing system designed for AI products that price consumption per token and model. It tracks usage events, calculates margins per customer and model, generates invoices, and manages prepaid credits while keeping your data in your own Postgres database. The software relies on a Go program, Postgres, and Redis, and integrates with Stripe to charge cards. It suits small and mid-size teams looking to self-host their billing infrastructure without paying extra software licensing fees. Key components include test clocks for previewing invoices, idempotent event counting, and support for automated payment retries through Stripe.

Hardcount at a glance

Best for: Software engineer, Founder
Runs on: Web, API, self-hosted, open source
Pricing: Free, open-source under the MIT license
Released: November 2026
Category: AI agent tool
Website: github.com/gethardcount/hardcount

Key features

Tracks token usage by model and token type
Calculates margin per customer and model
Generates invoices and PDF reports
Handles prepaid credits
Provides test clocks for previewing billing changes
Connects with Stripe for card payments

Use it for

Billing customers for AI token consumption
Tracking profit margins per AI customer
Selling prepaid credits for AI usage
Generating usage-based invoices on own servers

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