Lago

Open-source metering and usage-based billing API for subscription management, invoicing and revenue analytics.

Works with AI agents:llms.txt

Ask your AI about this, with this page as the source:ChatGPT ↗Claude ↗Perplexity ↗

Where it fits

Payments · Metering and billing on topComplex usage pricing you want to self-host for free, sitting on top of your payment processor.Trade-off: One more system to host and connect to payments.

How Lago itself is built

8 tools, from its own code, website and Product Hunt page.

Who uses it

1 makers' products, each linked to the source that shows it.

The maker says so 1How evidence is collected →

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CerebriumServerless infra for AI/ML apps - Build faster and cheaper

“Lago has made it very simple to implement usage based billing for our clients that we could easily integrate via API. It is also very feature rich when it comes to”

PaymentsMaker says so · source ↗

What makers say

1 makers on why they use Lago, in their own words on Product Hunt.

Lago has made it very simple to implement usage based billing for our clients that we could easily integrate via API. It is also very feature rich when it comes to

Cerebrium Sep 2026 ↗

Loved and watch-outs

Themes that recur in makers' words and Hacker News comments, each linked to what it summarises, with how Product Hunt tags its reviews.

Most loved

Usage-based billing integrates simply through its API, and it is built for high-throughput event metering. PH HN

Reliability and open issues

Incidents on its status page11 in the last 90 days · 25+ in the last year

minor Degraded performance on our API Sep 2026
minor Degraded performance on our API Sep 2026
minor Degraded performance on our API Aug 2026

From its own status page, 2026-10-02. Vendors decide what they post; one page can cover several products.

Alternatives to Lago

All alternatives by situation →

StripeFull control over checkout and billing, lower fees than a merchant of record, and the widest integration ecosystem.891 makers · payments

PayPalAdding PayPal and Venmo as a checkout option for buyers who won't type in a card.101 makers · payments

PolarDevelopers selling SaaS, subscriptions, usage-based plans or license keys.Open source50 makers · payments

Lemon SqueezySelling software and digital downloads with minimal setup.77 makers · payments

PaddleEstablished SaaS businesses that want a mature MoR.79 makers · payments

Dodo PaymentsAI and SaaS products with usage-based billing, selling globally.30 makers · payments

On Product Hunt, people weigh it against: Polar, Paddle, Dodo Payments, Autumn, Chargebee.

Questions makers ask about Lago

Is Lago free?

Yes — there is a free tier a small product can run on; paid use starts at Contact sales. source ↗

Is Lago open source or self-hostable?

Open source, and you can self-host it. source ↗

Can AI coding agents work with Lago?

It serves an llms.txt docs index.

Who uses Lago?

1 makers' products we track, each with a source. source ↗