Subscription Billing & Revenue Management · Vendor file
Lago
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Scale your AI or tech business with Lago: event-driven usage metering, hybrid pricing-ready, open-source + cloud — build fast, bill accurately.
Active · verified September 2026
Categories Lago serves
The B4 Index places Lago in 3 categories. Each category page lays out the build-versus-buy considerations for that decision.
Usage-Based Billing (Metered Billing Infrastructure) Open-source self-hosted free; cloud managed starts ~$1,000/month
Usage-Based Billing / API Metering Infrastructure Open-source self-hosted (free); cloud plan contact sales
The B4 Index scores every software category on two axes, strategic differentiation and AI feasibility, to
classify it Build, Buy, Bridge, or Beware. Vendor facts here are independent of that call. See the full
methodology.