Guides
Guides for collecting payments across Latin America
API Billing: How to Meter and Charge for API Calls
How API billing works end to end: meter every call, pick per-call, tiered, credit, or prepaid balance pricing, and invoice automatically — with real code.
Best Merchant of Record for Usage-Based and Metered Billing
Most merchants of record are built for fixed subscriptions, and most usage-based billing engines are not merchants of record. Here is how the options compare, and where Commet fits.
Usage-Based Billing Software: 7 Best Tools for AI (2026)
Compare usage-based billing software for AI products: Commet, Stripe Billing, Metronome, Orb, Lago, OpenMeter, and Polar, with how to choose, tradeoffs, and prices checked in November 2026.
How to Collect Payments from Argentina
A complete guide for SaaS companies looking to accept payments from customers in Argentina. Handle ARS, USD, taxes, and compliance.
Subscription Billing Cycles: How They Work
How subscription billing cycles work: anchor dates, monthly and annual intervals, proration on mid-cycle plan changes, and how to automate recurring charges.
How to Implement Usage-Based Billing for AI Services
Direct answers to the questions AI teams ask: how to meter tokens, bill across multiple LLM providers on one invoice, sell prepaid credits, and add usage-based billing to an existing SaaS.