Skip to content
SPECIFICTION
Get listed

Lago

getlago.com

Free plan Open source WebAPISelf-hosted
Visit getlago.com
Spec score 8.5 #4 of 41 in API Monetization Software

What it is

Lago is an open-source billing platform that connects product usage and commercial terms with customer invoices. It supports usage-based, subscription, prepaid, and hybrid pricing, plus quotes, order forms, prepaid credits, entitlements, quotas, subscription and usage charges, and itemized invoices. For AI products, Lago can meter input, output, and cached tokens separately and assign usage to customers for billing. Applications can connect through a REST API, official JavaScript, Python, Ruby, and Go SDKs, or signed webhooks. Listed AI integrations include OpenAI, Anthropic, AWS Bedrock, Google Gemini, and Mistral; payment and finance integrations include Adyen, Stripe, NetSuite, and Xero. The Open source plan is free, licensed under AGPLv3 and self-hosted. Lago Premium is available as cloud or self-hosted deployment, including on-premises or in a VPC, but pricing is provided after contacting Lago. Lago states it is SOC 2 Type II certified and describes single sign-on, role-based access controls, and audit logs. Premium includes platform support, business-hours incident management, and implementation guidance.

Spec sheet

What it does
Lago is an open-source platform for usage-based, subscription, prepaid and hybrid billing that connects product usage and commercial terms to invoices.Read 15 Oct 2026 · getlago.com
Product
Lago is an open-source billing platform for usage-based, subscription, prepaid, and hybrid pricing that connects product usage and commercial terms to customer invoices.Read 4 Oct 2026 · getlago.com
Deployment
Lago Premium is offered as cloud or self-hosted deployment, and Lago says it can be run on-premises or in a VPC.Read 4 Oct 2026 · getlago.com
Free plan
YesRead 19 Sep 2026 · getlago.com
Security
Lago states that it is SOC 2 Type II certified and undergoes regular third-party penetration tests.Read 15 Oct 2026 · getlago.com
Support
Lago Premium includes platform support, business-hours incident management, and implementation guidance; 24x7 incident management and an assigned solution engineer are listed as on-demand add-ons.Read 4 Oct 2026 · getlago.com
License
The Lago platform code is distributed under the AGPLv3 license; separate Agent SDK and MCP repositories use MIT licensing.Read 15 Oct 2026 · github.com
Access controls
Lago describes support for single sign-on, role-based access controls, and audit logs.Read 4 Oct 2026 · getlago.com
Accounting and tax integrations
Listed accounting and tax integrations include NetSuite, Xero, Anrok and Avalara.Read 15 Oct 2026 · getlago.com
AI assistants
Lago offers billing, finance and pricing assistants plus an MCP server for governed access to billing data and actions.Read 15 Oct 2026 · getlago.com
AI integrations
Listed AI integrations include OpenAI, Anthropic, AWS Bedrock, Google Gemini, Mistral, Ramp Router, Snowflake Cortex, Databricks AI Gateway, and Cloudflare AI Gateway.Read 4 Oct 2026 · getlago.com
API and SDKs
Applications can use Lago's REST API, signed webhooks and official JavaScript, Python, Ruby and Go SDKs; an OpenAPI specification is public.Read 15 Oct 2026 · getlago.com
Billing features
The platform supports quotes and order forms, prepaid credits, entitlements and quotas, subscription and usage charges, and itemized invoices.Read 4 Oct 2026 · getlago.com
CLI and MCP
Developers can manage billing through the Lago CLI and connect assistants through the Lago MCP server.Read 15 Oct 2026 · github.com
Client portal
YesRead 19 Sep 2026 · getlago.com
Company headquarters and founding
LinkedIn lists headquarters in Paris and a 2021 founding year.Read 15 Oct 2026 · linkedin.com
Company size
LinkedIn lists Lago as a privately held IT services company with 11–50 employees.Read 15 Oct 2026 · linkedin.com
CRM and data integrations
Listed CRM and data connections include HubSpot, Salesforce, Airbyte, Amazon S3, ClickHouse, Hightouch and Segment.Read 15 Oct 2026 · getlago.com
Developer access
Applications can connect through a REST API, official JavaScript, Python, Ruby, and Go SDKs, and signed webhooks.Read 4 Oct 2026 · getlago.com
Documentation
Documentation provides billing guides, API references, integration pages, templates, FAQ, changelog, authentication, webhooks, SDK and self-hosted sections.Read 15 Oct 2026 · getlago.com
Entitlements
Premium includes entitlement management for controlling feature access from billing.Read 15 Oct 2026 · getlago.com
Funding news
Lago announced on March 14, 2024 that it had raised $22 million led by FirstMark, with participation from Y Combinator, New Wave and Script.Read 15 Oct 2026 · getlago.com
Invoicing
Lago generates invoices, manages invoices, supports credit notes, invoice previews and receipts.Read 15 Oct 2026 · getlago.com
Limit: AGPL obligations
Independent analysis identifies AGPL licensing as a potential legal constraint for companies embedding Lago in a commercial multi-tenant product.Read 15 Oct 2026 · unsubbed.co
Limit: operational complexity
Independent analysis says self-hosting requires operating a multi-service Docker stack and is unsuitable for teams without engineering capacity.Read 15 Oct 2026 · unsubbed.co
Limit: pricing transparency
An AlternativeTo reviewer criticizes the managed offering's contact-us pricing and describes the open-source edition as barebones.Read 15 Oct 2026 · alternativeto.net
Multi-currency invoicing
YesRead 19 Sep 2026 · getlago.com
Notable limits
Premium pricing is not publicly listed, and the pricing page says some features are add-ons or subject to caps, including billing entities and data pipeline volume.Read 4 Oct 2026 · getlago.com
Online payments
YesRead 19 Sep 2026 · getlago.com
Payment integrations
Listed payment integrations include Stripe, Adyen, GoCardless and MoneyHash.Read 15 Oct 2026 · getlago.com
Payment reminders
YesRead 19 Sep 2026 · getlago.com
Payments and finance integrations
Listed integrations include Adyen, GoCardless, Stripe, NetSuite, Xero, Anrok, Avalara, HubSpot, and Salesforce.Read 4 Oct 2026 · getlago.com
Praise: billing organization
Product Hunt reviewers report that Lago's organization of billing helped them understand complex requirements and automate billing for products.Read 15 Oct 2026 · producthunt.com
Praise: flexibility and developer control
Product Hunt reviewers repeatedly praise Lago's customizable usage-cost modeling, open-source approach, API quality and ability to build complex billing workflows.Read 15 Oct 2026 · producthunt.com
Pricing models
The platform supports consumption pricing, prepaid credits, usage allowances, subscriptions and hybrid plans.Read 15 Oct 2026 · getlago.com
Rating on Capterra
0.0 out of 5 from 0 reviews.Read 15 Oct 2026 · capterra.com
Rating on G2
0.0 out of 5 from 0 reviews.Read 15 Oct 2026 · g2.com
Rating on GetApp
0 out of 5 from 0 reviews.Read 15 Oct 2026 · getapp.com
Rating on Product Hunt
4.6 out of 5 from 10 reviews.Read 15 Oct 2026 · producthunt.com
Rating on TrustRadius
6 out of 10 from 1 review.Read 15 Oct 2026 · trustradius.com
Recurring invoices
YesRead 19 Sep 2026 · getlago.com
Revenue analytics
Built-in analytics report revenue, MRR, usage, credits and invoices with breakdowns by month, plan or customer.Read 15 Oct 2026 · getlago.com
Scale claim
Lago says its platform handles up to 1 million events per second and reports 99.9% historical uptime for enterprise customers.Read 15 Oct 2026 · getlago.com
Security controls
Premium security controls include SSO, RBAC, security logs and API or activity audit logs.Read 15 Oct 2026 · getlago.com
Self-host components
The Docker stack includes frontend, API, API worker, clock worker, PostgreSQL, Redis and PDF-generation services.Read 15 Oct 2026 · getlago.com
Self-host requirements
The Docker deployment guide requires Docker, Docker Compose and Git.Read 15 Oct 2026 · getlago.com
Self-hosting
Lago can run on premises, in a VPC or another customer-controlled environment, alongside its managed cloud option.Read 15 Oct 2026 · getlago.com
Usage metering
It ingests raw usage events, aggregates them and converts them into billable charges in real time.Read 15 Oct 2026 · getlago.com
Who it is for
Lago describes the platform as serving engineering, product, finance, and operations teams, as well as fast-growing AI companies and global enterprises.Read 4 Oct 2026 · getlago.com

Plans and prices

Open source Free AGPLv3-licensed · Self-hosted deployment Read 19 Sep 2026 · getlago.com
Open Source Free free forever usage metering · price plans · coupons · add-ons · invoicing · prepaid credits · billing integrations Read 15 Oct 2026 · g2.com
Open-source self-hosted Free AGPLv3 · self-host on your own infrastructure Read 4 Oct 2026 · getlago.com
Lago Premium Priced on request Contact Lago for pricing Cloud or self-hosted deployment · some features and services are add-ons or subject to caps Read 4 Oct 2026 · getlago.com
Premium Priced on request on demand cloud or self-hosted · custom plans · customer portal · progressive billing · analytics · AI assistants · MCP · RBAC · support Read 15 Oct 2026 · g2.com

Every Lago plan and price →

Strong points and limits

Strong points

  • Open-source plan costs nothing.
  • Supports usage, subscription, prepaid, and hybrid pricing.
  • Meters AI input, output, and cached tokens separately.
  • Offers a REST API, SDKs, and signed webhooks.
  • Supports cloud or self-hosted Premium deployment.

Limits

  • Open-source plan requires self-hosting.
  • Premium pricing is provided only after contacting Lago.
  • Some features have add-ons or caps.

Who it suits

Lago is aimed at engineering, product, finance, and operations teams, including fast-growing AI companies and global enterprises. Its open-source plan suits teams prepared to self-host billing software.

Lago in depth

Read the full write-up

Lago is an open-source billing platform for businesses that need invoices to reflect subscriptions, usage, prepaid credits, or combinations of those models. It suits teams with engineering, product, finance, or operations ownership of billing; the key choice is between self-hosting the free AGPLv3 edition and paying custom pricing for Premium.

Overview

Lago connects product usage and commercial terms to customer invoices. Alongside recurring invoices, online payments, reminders, multi-currency invoicing, and a client portal, it supports subscription, usage-based, prepaid, and hybrid billing. That range is useful when a customer’s bill needs to track changing consumption as well as fixed commitments; a company with only a simple fixed subscription may find the broader billing setup unnecessary.

Quotes and order forms can capture commercial terms, while entitlements and quotas set usage boundaries. Prepaid credits and itemized invoices help account for consumption and show how charges add up. These capabilities give teams room to shape complex billing, but require them to connect product activity and terms to the billing workflow.

Key features

Usage metering and integrations

For AI products, Lago can meter input, output, and cached tokens separately, then attribute usage to customers for billing. That separation is valuable when token categories need distinct billing treatment. Listed AI integrations include OpenAI, Anthropic, AWS Bedrock, Google Gemini, Mistral, Ramp Router, Snowflake Cortex, Databricks AI Gateway, and Cloudflare AI Gateway. Payments and finance integrations include Adyen, GoCardless, Stripe, NetSuite, Xero, Anrok, Avalara, HubSpot, and Salesforce.

Developer access and controls

Applications can connect through a REST API, official JavaScript, Python, Ruby, and Go SDKs, and signed webhooks. This makes Lago a natural fit for teams integrating billing into a product rather than relying only on a standalone billing interface. Lago states that it is SOC 2 Type II certified and undergoes regular third-party penetration tests. It also describes single sign-on, role-based access controls, and audit logs, which matter for organizations managing access to billing operations.

Deployment and support

Premium can run in the cloud or be self-hosted; Lago also says it can be run on-premises or in a VPC. Premium includes platform support, business-hours incident management, and implementation guidance. 24x7 incident management and an assigned solution engineer are on-demand add-ons, so teams needing those services should account for them separately.

Pricing

Open source

The Open source plan costs nothing and is AGPLv3-licensed for self-hosted deployment. Open-source self-hosted is also priced at free, under AGPLv3, with deployment on your own infrastructure. These are the no-license-cost options for teams prepared to operate Lago themselves; they do not provide the Premium support package described for the paid offering.

Lago Premium

Lago Premium has custom pricing, provided after contacting Lago, and is available as cloud or self-hosted deployment. It is the relevant option for organizations seeking Lago’s Premium support and deployment choices, but buyers should clarify costs before committing. Some features are add-ons or subject to caps, including billing entities and data pipeline volume, so teams should confirm how their expected scale and requirements affect the price.

Platforms

Lago supports API, self-hosted, and web platforms. The combination gives developers integration routes and organizations deployment flexibility; self-hosting entails running it on their own infrastructure, while Premium also offers cloud deployment.

Who it's for

Lago describes its audience as engineering, product, finance, and operations teams, including fast-growing AI companies and global enterprises. It is especially suitable when teams need to translate product usage into customer charges, handle multiple billing models, or distinguish AI token categories. It is less compelling for a business with uncomplicated fixed billing that has no need for this breadth of metering and controls.

Pros and cons

Pros: Multiple billing models, prepaid credits, quotas, and itemized invoices support customer bills that combine commitments and variable usage.

Pros: Separate AI token metering and a broad set of listed AI integrations suit products that need usage-based AI billing.

Pros: REST API, four official SDKs, and signed webhooks provide several routes for product integration.

Cons: Premium pricing is custom, and add-ons or caps on billing entities and data pipeline volume can complicate budgeting.

Cons: The free editions are self-hosted, so they are not a no-cost hosted option.

Alternatives

For a free API-and-web option with an explicit event allowance, Aforo offers a Starter plan at free, billed $0/ month, with 50K events / month, one storefront, all six pricing models, basic Revenue Intelligence, Stripe integration, and community support. Choose it when those stated Starter terms fit better than Lago’s self-hosted free editions.

Flexprice is another API-and-web alternative with a free Developer plan at free, covering up to 100,000 events/month, one pricing plan, REST API plus one SDK, basic invoice generation, email support, and 14-day data retention. It may suit a team whose needs fit that defined starter allowance.

Solvimon offers an AI Essentials plan free for the first $3M, then 0.4% of volume; qualification criteria apply. Its stated plan includes usage metering for tokens and API calls and unlimited credits and wallets, so consider it when those terms align with your billing needs.

Credyt offers a free To start plan forever for the first 10 active wallets every month, with full feature access in test mode, no credit card, and no time limit. It is an option for building and testing within that wallet allowance.

Sequence CPQ is a paid API-and-web alternative with a Growth plan at $799 a month for startups with less than $1m in annual revenue; its quote builder is an optional add-on. Consider it when that stated startup plan matches the requirement. OneBill is a paid API-and-web alternative with a free trial.

BillingPlatform Accounts Receivable is a paid API-and-web option with a free trial and quote-based custom pricing. Ubersmith is a paid alternative with a free trial and hosted or self-hosted options.

For category comparisons, see Usage-Based Billing Software, Subscription Billing Software, API Monetization Software, Dunning Management Software, and Invoicing software.

Verdict

Choose Lago if your team needs flexible usage, subscription, prepaid, or hybrid billing, particularly for a product where AI token consumption must be attributed to customers. Its developer interfaces, billing breadth, and deployment choices are strong reasons to shortlist it. Look elsewhere if you need a public Premium price before engaging, or if self-hosting and complex billing are more operational burden than your business needs.

Verdict

Lago covers multiple billing models and offers developer interfaces for connecting usage to invoices. The self-hosted open-source option has a stated price, while Premium pricing and some feature limits require further clarification.

Where Specifiction places it

Alternatives to LagoAll alternatives →