
Lago
7.5#2 in usage-based billing softwareFree planFree planWebAPISelf-hosted
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Lago describes its users as engineering, product, finance, and operations teams, including fast-growing AI companies and global enterprises. It may suit teams that need to bill for metered product usage or combine usage with subscriptions and prepaid balances.
m3ter suits mid-size and large B2B SaaS companies that need to calculate charges from usage data. It may fit teams configuring complex pricing, credits, or parent-child billing structures.