Billing for modern pricing models
The E2E testing layer for AI-driven development
Lark is a modern billing platform with the flexibility to support any pricing model (flat-fee, credit-based, usage-based, hybrid, dimensional, outcome-based, etc.) at any scale. Whether you're building an AI powered API service or a B2B SaaS product, Lark provides the tools you need to implement complex billing logic without the hassle. Jack and Vijit previously built a usage-based billing system for a large billing provider.
Lark lets teams write end-to-end tests in plain English. Validate dashboards, APIs, SDKs, and full product flows without maintaining fragile test code. Run continuously on feature branches, in CI, or in production.
Lark shifted from a billing platform for flexible pricing to an end-to-end testing platform for software teams, representing a complete, unrelated product and market change.