Platform
Real-time metering for flexible pricing.
Billing & invoicing without the headaches.
Entitlements managed directly in billing.
Flexible cash collection for hybrid billing models.
Revenue analytics you can trust, across every stream.
White-label billing for platforms and ecosystems.
AI-powered billing intelligence.
Enterprise billing integrations that scale with you.
Solutions
Bill tokens, GPUs, credits and hybrid models.
Complex billing with full compliance control.
Accurate, compliant billing for finance teams.
Handle complex metering and device-level billing.
Don't build billing from scratch.
Automate accurate invoicing.
All your invoice data in one place.
Ship pricing changes without engineering bottlenecks.
Combine different pricing models.
Meter and bill any usage metric.
Customize plans.
Bill multiple products in one system.
Deploy Lago anywhere.
Developers
Community
Complete API documentation and reference.
Latest updates and version changes.
Comprehensive guides and tutorials.
Contribute to our open source project.
Resources
Learn more about Lago.
Join our team.
Latest news and insights.
Guides and answers to common billing questions.
Playbooks for engineering and finance.
Enterprise-grade security.
Customer Stories
When PayPal wanted to offer billing to merchants on its platform, they didn’t want to build complex billing from scratch and maintain it forever. That’s why they picked Lago. In PayPal’s integrated finance ecosystem, billing was the missing piece. Why It Matters If you're evaluating billing infrastructure in a regulated industry like financial services, PayPal's decision reveals something important: the market has changed. First, complex billing is becoming more important: AI is increasing
Anh-Tho Chuong • 2 min read
Startup Stories
Billing Systems shouldn’t be a nightmare. Discover how Lago makes billing modular, open-source & engineer-friendly to scale pricing without pain.
Anh-Tho Chuong • 5 min read
Product
When you link your bank account to Venmo, you're not using Venmo's technology, you're using Plaid. An Uber sends you a ride notification, that originates with Twilio. Maps in Strava, Doordash or Instacart? Powered by Mapbox. These are some of the most successful software companies ever built, and most of their end users have never heard of them. They don't compete for the spotlight — they disappear inside other people's products. In hardware, this model already has a famous name: TSMC. The Tai
Insights from our customers on how they use Lago to power their billing.
Introduction 1NCE disrupted the IoT connectivity industry in 2018 with a bold offer: 10 years of global software and connectivity for €10. The model was simple, affordable, and perfectly suited to low-data use cases like smart metering, asset tracking, and street lighting. But as the IoT market evolved, so did customer needs. Many use cases demanded higher data volumes and faster speeds. In response, 1NCE launched High Data IoT: a pay-as-you-go model offering 5€/GB with speeds up to 25 Mb/s. T
Flipside Crypto charges for API access and Snowflake integration on a usage basis. No prior billing system. Here's how they went from zero to production with Lago.
How to build billing systems that don't become engineering nightmares.
Engineering
Anh-Tho Chuong • 16 min read
Billing SDKs enable developers to integrate payment processing directly into applications across Python, Node.js, Ruby, and Go environments. According to 2025 developer surveys, 68% of engineering teams using SDKs for billing integration report reducing time-to-market by 40-50% compared to REST API-only approaches [1]. This guide explains why native SDKs matter, how to evaluate them, language-specific implementation patterns, and architectural best practices that reduce integration complexity an
Anh-Tho Chuong • 13 min read
Prepaid credit systems have become essential infrastructure for modern SaaS platforms, enabling flexible consumption-based billing models that align revenue recognition with actual usage. According to recent industry data, 67% of B2B SaaS companies now offer prepaid credit options as part of their pricing strategy [1], recognizing that prepaid models increase customer lifetime value by an average of 34% compared to traditional monthly subscriptions [2]. Implementing a robust prepaid credit syst
Anh-Tho Chuong • 12 min read
Playbook
Anh-Tho Chuong • 14 min read
How we think about building billing infrastructure.
Anh-Tho Chuong • 8 min read
Lago vs Chargebee: open-source billing, self-hosted deployment, PSP-neutral architecture, and usage-based billing built for AI. Here's when to switch and when not to.
Anh-Tho Chuong • 7 min read
Why we built the Lago Agent SDK, and what we're shipping next. We just released the Lago Agent SDK. Two libraries, Python and TypeScript. They wrap your LLM client and send token usage to Lago for billing. That's the surface. The point is what you stop doing. The token plumbing Every team that shipped an AI feature in the last 18 months built the same thing. Smart search, inbox triage, meeting summaries, coding agents, vibe-coded apps. All of them ended up writing token-extraction middlewar
Raffi Sarkissian • 5 min read
Lessons from the trenches of building and scaling startups.
Anh-Tho Chuong • 6 min read
Lovable crossed $200M ARR in under a year. Replit charges up to $200/month per seat. Base44 got acquired by Wix for $80M. These platforms know how to monetize. Their users don't. The Shopify lesson The obvious pushback: who cares? Most vibe-coded apps are toys. Mostly true. But in 2025, merchant solutions made up over 75% of Shopify's total revenue. Merchant solutions = payment processing, capital lending, shipping. Everything Shopify earns when merchants transact through the platform. Not
Anh-Tho Chuong • 4 min read
Disclaimer: People gave me “AI slop” comments on my latest article. I’m writing this post without AI, together with my co-founder Raffi and our content lead Finn who helped me edit it (“by hand”). A lot of founders ask me whether they should apply to YC, open-source their product or move to SF. I get it, but I think we’re missing the real depth here. There’s pressure to work 996 (9am-9pm, 6 days a week), to be on top of the latest AI thing, to live in the right place, to “get it right”, accor
Anh-Tho Chuong • 9 min read
Stripe paid $1B for Metronome, a competitor to their own billing product. The reason reveals an architectural gap: Stripe Billing maxes out at 1,000 events/sec while modern AI companies need 100,000+. That’s not a feature gap—it’s a fundamental architecture problem.
The most recent insights from the Lago team.
Jun 29, 2026
Jun 26, 2026
Jun 23, 2026
Jun 19, 2026
May 26, 2026
Apr 6, 2026
Mar 30, 2026
Mar 26, 2026
Mar 24, 2026
Mar 17, 2026
Mar 12, 2026
Mar 11, 2026
Feb 26, 2026
Feb 23, 2026
Feb 20, 2026
Get the latest news and updates — no hidden fees
By signing up, you agree to Lago's Privacy and Terms.
Team solutions
Industry solutions
Company
Connect
All systems normal
© 2026 Lago
