Overview:
Flexprice is an open-source monetization infrastructure platform designed specifically for AI-native and SaaS teams. It enables usage-based, credit-based, and hybrid pricing models with real-time event metering and automated billing. The system processes usage data from backend APIs, AI agents, or data warehouses, calculates pricing based on customer plans, and applies credits, feature limits, and automatic invoicing. It addresses the common developer burden of building custom billing logic, offering a composable architecture that integrates with existing payment gateways, CRM, and accounting tools.
Core Features:
Usage Metering: Track custom usage events (API calls, compute time, database queries) in real time, handling millions of events reliably for accurate billing.
Credit Grants: Support prepaid or promotional credits, automatic top-ups at thresholds, and credit expiration, all managed without custom code.
Pricing Plans: Design and modify seat-based subscriptions, pure pay-as-you-go, volume-tiered, or hybrid pricing plans with per-customer overrides and versioning.
Feature Management: Define feature toggles, metered limits, or configuration values per plan or customer, enabling enforcement of usage limits and entitlements.
Subscriptions & Invoicing: Generate invoices from real-time usage, subscriptions, and credits, with automated handling of proration, overages, and credit application. Invoice line items provide full charge visibility.
Use Cases:
Developers building usage-based pricing: Send usage events from backend APIs or AI agents and let Flexprice handle real-time aggregation, billing calculations, and invoice generation, eliminating custom billing code.
Teams iterating on pricing models: Modify pricing strategies per customer or experiment with hybrid models (e.g., seat-based plus overage) without schema updates or migration scripts.
Organizations integrating billing with existing tools: Sync invoices to payment processors, update customer data in CRM, and push revenue numbers to accounting systems, preserving current workflows.
AI-native companies monetizing services: Track and bill for custom usage events like compute time, API calls, or database queries, with real-time visibility into customer usage and charges.
Why It Matters:
Flexprice is a self-hostable, open-source alternative to proprietary billing systems, offering full transparency and control over billing logic and data. Its composable architecture augments existing payment and CRM tools, avoiding vendor lock-in. By abstracting usage metering, credit management, and invoice generation, it reduces the engineering effort required to maintain billing infrastructure, allowing teams to focus on core product development rather than custom billing workarounds.
