Lago vs Orb: Which Is Better in 2026?

Lago is an open-source metering and usage-based billing platform built for modern software companies, especially those with complex or consumption-based pricing. As more SaaS and AI products move away from simple flat subscriptions toward usage-based, hybrid and tiered models, billing becomes genuinely hard to build and maintain. Lago tackles this head-on, providing a flexible billing engine that handles metering events, applying pricing logic, and generating invoices — all available as open source you can self-host or use in the cloud.

The platform's core is its event-based metering and pricing system. Lago ingests usage events from your product, aggregates them, and applies whatever pricing structure you need — per-seat, per-usage, tiered, volume, packages, prepaid credits, add-ons and combinations thereof. This flexibility is exactly what teams struggle to build in-house, where billing code becomes a sprawling, error-prone mess. Lago centralizes that logic in a dedicated, battle-tested system, then handles invoicing, coupons, taxes and integrations with payment providers and your finance stack.

Being open source is a major differentiator. Companies that care about data control, customization or avoiding the high fees and lock-in of closed billing platforms can self-host Lago and shape it to their needs, while still benefiting from an active community and ongoing development. It's particularly popular with developer-led and API-first companies, including many in the AI space, where usage-based pricing is the norm and accurate metering is critical to revenue. For engineering and finance teams who find building billing in-house painful and proprietary platforms expensive or inflexible, Lago offers a powerful, transparent and adaptable foundation. It represents a modern, open approach to one of software's least glamorous but most important problems: getting paid accurately for what customers actually use.

Orb is a modern billing platform purpose-built for usage-based and hybrid pricing, helping software companies turn raw product usage into accurate invoices and reliable revenue. As pricing models grow more sophisticated — combining subscriptions with consumption, seats, credits and tiers — legacy billing systems and home-grown solutions buckle under the complexity. Orb provides a flexible, developer-friendly engine designed from the ground up for exactly this challenge, so companies can bill correctly no matter how creative their pricing gets.

At its core, Orb ingests usage events from your product, accurately meters and aggregates them, and applies your pricing logic to produce invoices that customers can trust. It supports complex scenarios — tiered and volume pricing, prepaid and postpaid credits, minimums and commitments, proration and mid-cycle changes — without forcing you to hard-code brittle billing logic into your application. Crucially, it emphasizes accuracy and auditability, giving finance and engineering teams confidence that the numbers are right and traceable, which matters enormously when billing errors directly cost revenue and trust.

Orb also bridges the gap between engineering and finance, providing the data, reporting and integrations both sides need: clean revenue recognition data, syncing with tools like accounting and CRM systems, and visibility into usage and revenue trends. Its developer-centric design — robust APIs, reliable event ingestion and flexibility — makes it a favorite for fast-growing, technically sophisticated companies, including many in AI and infrastructure where usage-based billing is essential. For organizations that have outgrown simple subscription billing and need a system that can keep pace with evolving pricing while remaining accurate and scalable, Orb offers a powerful, purpose-built solution that takes one of the hardest parts of running a software business and makes it dependable.