AI billing for product, engineering and finance

Turn AI usage into revenue

Meter tokens, GPU time, API calls or product outcomes. Apply credits, entitlements and contract terms across self-serve and enterprise plans, then invoice and collect payment with Lago.

Lago customers include CoreWeave, Mistral AI and PayPal.

Usage-based pricing

Prepaid credits

Custom contracts

Cloud-hosted or self-hosted

Payment processor agnostic

Inspectable code

Example usage flow

source to revenue

Capture token and API usage

Attribute usage to a customer

Apply plan, credit and contract rules

Invoice and collect payment

Trusted by the most innovative companies

Meter AI usage in real time

Capture tokens, GPU time, API requests, model variants and customer-level usage without pre-aggregation.

Price the product customers buy

Combine subscriptions, included usage, prepaid credits, overages and custom contract terms across self-serve and sales-led plans.

Connect usage to product access

Expose current usage and entitlements through APIs. Add premium alerts for asynchronous threshold notifications and workflows.

Fit your infrastructure and finance stack

Use Lago Cloud or self-host the open-source billing engine, with the payment processors and business systems you choose.

Customer proof

Lago has been able to follow the pace of our releases and has allowed us to focus on what we do best.

Timothée Lacroix, CTO, Mistral AI

Resources

Billing is mission-critical. Lago is engineered for the realities of high-volume enterprises.

AI is too expensive for unlimited subscriptions

See how AI companies are adapting pricing to variable usage and cost.

How Mistral uses Lago for AI billing

See how Mistral supports token pricing, prepaid credits and custom contracts.

Usage-based pricing playbook

Design and implement a pricing model around how customers use your product.