Best API billing AI tools

Billai is a developer-first billing and analytics platform for AI applications. It enables developers to track usage, automate invoicing, manage subscriptions, and handle complex revenue splits through a simple SDK and dashboard.

Nevermined is a specialized billing and payments infrastructure designed for the AI economy. It enables developers and businesses to instantly monetize every AI agent request through flexible, AI-native pricing models like usage-based, outcome-based, and value-based billing. It provides real-time metering, instant payouts, and universal agent IDs to support both human-to-agent and agent-to-agent transactions, future-proofing applications for the emerging agentic commerce landscape.

OpenMeter is an open-source, real-time usage metering and billing platform designed for modern AI and DevOps companies. It simplifies the implementation of usage-based pricing by turning events, logs, and metrics into actionable revenue streams, complete with customer-facing dashboards and billing automation.