Solvimon vs Lago
Choosing billing infrastructure that grows with your business.
Overview
Lago is a solid open-source billing engine. It gives developer-led startups a transparent, self-hostable way to handle usage-based pricing without paying for a heavier platform. If you're early-stage with a single usage metric and strong engineering resources, Lago is a reasonable starting point.
But billing needs compound. And when hybrid pricing, enterprise contracts, credit architectures, quoting become a necessity, Lago's scope becomes the constraint.
Solvimon is billing infrastructure built for what comes next: the hybrid models, the scale, and the operational complexity that Lago wasn't designed to handle.
Feature comparison
Full billing lifecycle: subscriptions, usage, credits, entitlements
Usage-based metering and invoicing
Hybrid natively: subscriptions + usage + credits + rate cards in one system
Usage-based (core), basic subscriptions. Hybrid requires custom engineering
First-class credit architecture: wallets, pooling, burn-down, expiration, org-level allocation
Basic prepaid credit support
Built-in quoting with custom terms, commits, and configurable rate cards — no spreadsheet required
No CPQ. No quoting. Sales teams work outside the system entirely
Built by the team that scaled Adyen's billing to €970B+ annual volume
Open-source, community-supported
Fully managed
First-class credit architecture: wallets, pooling, burn-down, expiration, org-level allocation
Finance, RevOps, and engineering — configurable without code
Engineers
PSP-agnostic — Adyen, Stripe, Checkout.com, and others
Stripe only
Native multi-entity, multi-currency billing
Limited multi-entity support
Series A+ companies scaling hybrid pricing, enterprise sales, or AI monetization
Early-stage, developer-led startups with simple usage pricing
Pricing for AI
If you're building an AI product, we've got a special offering for you.
0.4%
of billed revenue
Your first $5 million in billed revenue are free
Hybrid pricing included
Multi-entity included
Credits & wallets included
PSP agnostic (Stripe, Adyen, Checkout.com, or all together)
Global presence, EU-based, GDPR-native, and compliant from day 1
0.7%
of billed revenue
+1.5% + €0.25 per transaction for card processing
Hybrid pricing requires custom code
Multi-entity requires separate accounts
Non-native credit support
Locked to Stripe payments
US-based
Stripe's billing fee alone is nearly double Solvimon's rates, even before you account for the engineering cost of building what Solvimon includes natively.
Built for AI
Variable inference costs need variable pricing infrastructure. Lago's billing has no a limited concept of credit wallets, token burn-down, or multi-pivot rate cards. Solvimon does:
Hybrid pricing models
Bill seats, usage, and credits in one ledger. No separate systems to reconcile. Configure pricing as your product evolves.
Multi-Entity Native
Launch new geographies without new accounts. One system handles invoicing across all entities with proper tax calculation and compliance.
Credits & Tokens
First-class credits with burndown, rollover, and multi-pivot rate cards. Handle different resource types (API calls, agent runs, image generation) with different economics.
Where teams outgrow Lago
Your pricing goes hybrid
Lago's core strength is metered usage billing. But most scaling companies don't stay usage-only. You add a platform fee. Then committed spend tiers. Then credits for AI features. Then per-seat minimums for enterprise accounts.
Each addition means more custom code around Lago. More orchestration logic maintained by your engineers. More edge cases that break at month-end. This is the orchestration tax — and open-source doesn't make it cheaper, it just makes it yours to maintain.
Solvimon handles hybrid models natively. Subscriptions, usage, credits, one-time charges, overage thresholds, and stairstep pricing live in one system. Configuration, not code.
Your sales team starts closing enterprise deals
Lago has no CPQ and no quoting capabilities. When your go-to-market evolves from pure self-serve to include sales-led deals, the gap is immediate. Sales reps build quotes in spreadsheets. Finance manually translates those quotes into billing configurations. Engineering gets pulled in to wire up custom terms.
This is the split stack problem: PLG runs on one system, SLG runs on another, and finance lives in the spreadsheet between them. Deals slow down. The CRO's team starts avoiding PLG-to-enterprise upgrades because the process is too painful.
Solvimon supports both motions on one ledger. Self-serve checkout and negotiated enterprise contracts draw from the same pricing engine. Upgrading a PLG customer to an enterprise contract is a commercial conversation, not a technical migration.
You need credits that actually work
Lago offers basic prepaid credits. Solvimon treats credits as a ledger architecture with wallets, pooling across teams, different burn rates per action, rollover and expiration rules, org-level budgets with user-level guardrails. For AI companies where credit systems determine margin visibility, the difference between bolted-on and built-in is the difference between guessing and knowing.
You can't afford to be your own billing ops team
Open-source means you own the infrastructure. Updates, patches, on-call, scaling — that's your engineering team's job. Lago's flexibility comes with responsibility: someone has to manage it.
At early stage, that tradeoff works. At scale, it doesn't. When your engineers should be building product, not babysitting billing runs at 2am before month-end close, a managed platform pays for itself.
Solvimon is fully managed infrastructure. Built to the standard of a system that processed €970B+ in annual payment volume without scheduled downtime.
Why Solvimon
Helping AI businesses reach the next level
The Solvimon platform is extremely flexible allowing us to bill the most tailored enterprise deals automatically.
Ciaran O'Kane
Head of Finance
Solvimon is not only building the most flexible billing platform in the space but also a truly global platform.
Juan Pablo Ortega
CEO
I was skeptical if there was any solution out there that could relieve the team from an eternity of manual billing. Solvimon impressed me with their flexibility and user-friendliness.
János Mátyásfalvi
CFO
Working with Solvimon is a different experience than working with other vendors. Not only because of the product they offer, but also because of their very senior team that knows what they are talking about.
Steven Burgemeister
Product Lead, Billing
Ready to see the difference?
Solvimon is trusted by the world's most demanding enterprises, and AI startups too.