Aria Billing vs Lago

Aria Billing is an enterprise SaaS platform for automating billing and order-to-cash operations. It supports one-time, subscription, consumption-based, usage-based, and hybrid models, with real-time processing of subscriptions and usage, taxation, payments, billing, and invoicing. Its features include product catalog management, collections, dunning, and reporting. The Aria Allegro engine handles usage mediation, rating, and charging, with methods including per-unit, tiered, volume-based, threshold, pay-as-you-go, and allowance-plus-overage approaches. Account hierarchies support B2C, B2B, B2B2C, distribution channels, commercial arrangements, and groups of connected devices. Aria lists more than 360 read-and-write APIs in REST and SOAP formats, plus connectors for Salesforce, ServiceNow, MuleSoft, Snowflake, Databricks, tax providers, payment processors, and other systems. Data Connect extracts, transforms, and loads billing data for analytics and business intelligence. Aria describes Billing Cloud as a multi-tenant public cloud platform and targets established service businesses and enterprises, including telecom, SaaS, fintech, utilities, and media. Pricing is on request.

Lago is an open-source billing platform that connects product usage and commercial terms with customer invoices. It supports usage-based, subscription, prepaid, and hybrid pricing, plus quotes, order forms, prepaid credits, entitlements, quotas, subscription and usage charges, and itemized invoices. For AI products, Lago can meter input, output, and cached tokens separately and assign usage to customers for billing. Applications can connect through a REST API, official JavaScript, Python, Ruby, and Go SDKs, or signed webhooks. Listed AI integrations include OpenAI, Anthropic, AWS Bedrock, Google Gemini, and Mistral; payment and finance integrations include Adyen, Stripe, NetSuite, and Xero. The Open source plan is free, licensed under AGPLv3 and self-hosted. Lago Premium is available as cloud or self-hosted deployment, including on-premises or in a VPC, but pricing is provided after contacting Lago. Lago states it is SOC 2 Type II certified and describes single sign-on, role-based access controls, and audit logs. Premium includes platform support, business-hours incident management, and implementation guidance.