Frontier AILago has been able to follow the pace of our releases and has allowed us to focus on what we do best.
Meter every AI token.
Bill with confidence.
Engineering gets granular usage data.
Finance gets a clear path from consumption to revenue.
AI usage over time
Every token type, accounted for.
1.19Mtokens metered
Input tokens654.00K
Output tokens236.00K
Cached tokens295.00K
Illustrative stacked bar chart of 18 days of AI usage, totaling 1,185,000 tokens. Input, output, and cached tokens are measured separately. Daily usage grows from 24,000 to 135,000 tokens.
Every token, captured.Meter input, output, and cached tokens separately. Attribute usage to each customer, so every event has a place on the bill.
One platform for every revenue workflow.From the first quote to the final invoice.
Quotes Turn your catalog into a customer-ready offer.
Prepaid credits Collect upfront. Apply credits as you bill.
Entitlements & quotas Define what each plan unlocks.
Complex pricing & packaging Price the way your business works.
Invoicing Turn usage into itemized invoices.
Powering fast-growing AI scaleups.And global enterprises.
See how ambitious teams build and scale their billing with Lago.
Frontier AI
SOC 2 Type II
Your data is protected with enterprise-grade rigor.
Flexible Deployment
Deploy Lago on-prem, in a VPC or elsewhere.
RBAC
Role-based access control to set user roles and permissions.
Lago self-hosted
Deploy Lago seamlessly on your own infrastructure to keep full control.
Bring the best of AI to billing.Make every billing workflow count.
Connect your AI tools, automate billing operations, and turn your Lago data into answers for your finance team.
Billing and Finance AI Assistants.
Manage billing and explore your revenue in plain language. Ask Lago’s AI assistants to help with invoices, subscriptions, and financial reports.
AI Forecast and Revenue Recognition.
Forecast usage-based revenue with AI. Track recognized and deferred revenue across each service period.
AI Dunning Agent.
Automate cash collection with personalized reminders and payment retries. Help overdue invoices get paid, with less manual follow-up.
Lago connects to your existing stack
Connect AI providers and gateways, payment providers, accounting systems, CRMs and the rest of your revenue stack.
Lago billing platform FAQ
What is Lago?
Lago is an open-source billing platform for usage-based, subscription, prepaid, and hybrid pricing. It connects product usage and commercial terms to customer invoices.
Which companies are Lago customers?
Lago customers include CoreWeave, Mistral AI and PayPal.
How do applications integrate with Lago?
Applications connect to Lago through a REST API, official SDKs (JavaScript, Python, Ruby, Go), and signed webhooks. The public OpenAPI spec and developer docs walk through each integration path.
Can teams run Lago on their own infrastructure?
Yes. Lago is AGPLv3-licensed and open source, so you can self-host it on your own infrastructure, or run it as a managed cloud service instead.
How much does Lago cost?
The open-source version is free to self-host under an AGPLv3 license. Lago Premium, available on Cloud or self-hosted, isn't publicly priced, since deployment size and needs vary; the team shares pricing directly when you book a demo.
How is Lago different from Stripe Billing, Chargebee, or Zuora?
Lago is open source, so teams can inspect the code, self-host it, and extend it rather than depend on a closed platform. It's built to handle usage-based, subscription, prepaid, and hybrid pricing on the same billing engine, without locking that flexibility behind a single vendor's roadmap.
Does Lago replace my payment processor?
No. Lago calculates charges, generates invoices, and applies tax, then connects to payment processors like Stripe, Adyen, and GoCardless to collect the payment. It sits alongside your existing processor rather than replacing it.
