Pricing used to be simple for software companies: a monthly plan per seat. Today most of them run a hybrid. A base subscription, usage on top, prepaid credits for AI features, committed annual spend for enterprise customers, overages, and the occasional custom contract that sales negotiated on a Friday. A billing system built only for flat subscriptions breaks under that load, and the symptoms are familiar: usage exported to spreadsheets, invoices corrected by hand, and pricing experiments that need an engineering sprint. This guide compares the platforms companies shortlist when they need to bill both recurring and usage revenue properly.
In short. Stripe Billing is the simplest choice if you already process payments with Stripe and your usage model is straightforward. Metronome, now a Stripe product, is the strongest option for high-volume usage and negotiated enterprise contracts with commits and credits. Orb is a top choice for flexible usage pricing with excellent developer tooling. Chargebee and Maxio suit subscription-first and finance-led SaaS companies adding usage, Zuora fits large enterprises with complex global billing, and Lago is the open-source option if you want to self-host.
What Usage-Based and Hybrid Billing Actually Requires
Before comparing vendors, it helps to list what your pricing will need in the next two years, not just today:
- Event metering at your volume: ingesting usage events reliably, deduplicating them, and aggregating them by customer and metric.
- Flexible rating: tiers, volume discounts, multidimensional prices (for example by model and region), minimums and caps.
- Hybrid plans: a base fee plus usage, seats plus usage, or platform fee plus consumption.
- Prepaid credits and commits: customers who buy a balance and draw it down, and annual commitments with true-ups.
- Contract flexibility: custom rates per customer, ramps, mid-term changes and amendments without code.
- Finance readiness: invoicing, tax, revenue recognition under ASC 606 or IFRS 15, and a clean sync to your ERP.
- Customer visibility: usage dashboards and alerts, so customers are not surprised by an invoice.
Most billing incidents in usage-based companies come from the last three, not from metering itself.
The PURIST Fit Score: How We Compare Them
| Dimension | What it measures | Weight |
|---|---|---|
| Metering and pricing flexibility | Event ingestion, aggregation, tiers, multidimensional and hybrid prices | 30% |
| Contracts, credits and commits | Prepaid balances, committed spend, ramps, per-customer contracts without code | 20% |
| Finance readiness | Invoicing, revenue recognition, tax, ERP and CRM integrations | 25% |
| True cost and time to launch | Fees at a typical volume, implementation effort, engineering time | 25% |
The Comparison Table
| Platform | Metering and pricing | Contracts and credits | Finance readiness | Cost and time to launch | PURIST Fit Score |
|---|---|---|---|---|---|
| Metronome | 10/10 | 10/10 | 7/10 | 6/10 | 8.3/10 |
| Orb | 9/10 | 9/10 | 7/10 | 6/10 | 7.8/10 |
| Stripe Billing | 7/10 | 6/10 | 7/10 | 9/10 | 7.3/10 |
| Chargebee | 7/10 | 7/10 | 8/10 | 7/10 | 7.3/10 |
| Lago | 8/10 | 7/10 | 6/10 | 8/10 | 7.3/10 |
| Zuora | 8/10 | 9/10 | 9/10 | 3/10 | 7.2/10 |
| Maxio | 6/10 | 6/10 | 9/10 | 7/10 | 7.0/10 |
The ranking reflects a company whose main challenge is usage and contracts. If your revenue is mostly subscriptions with a little usage, finance readiness matters more and Chargebee, Maxio and Stripe Billing move up. If you are a large enterprise with global entities, Zuora's depth becomes decisive.
The Real Cost Comparison Nobody Publishes
| Platform | Published pricing | What it means in practice |
|---|---|---|
| Stripe Billing | 0.7% of billing volume on pay-as-you-go, on top of payment processing; annual plans available | Lowest friction if you already use Stripe; Smart Retries and reminder emails included |
| Metronome | Starter plan reported at 0.8% of billing volume plus a fee per million ingested events; custom plans for enterprise | Built for high event volumes and negotiated contracts; now part of Stripe |
| Orb | Quote-based tiers | Expect a sales process; strong fit once usage pricing is core to the business |
| Chargebee | Percentage of billing with a free starting allowance on entry plans; plan versions vary | Check the current plan page, as third-party figures conflict |
| Maxio | Grow plan reported from $599 a month up to $100,000 in monthly billings | Predictable for finance-led SaaS; custom above that volume |
| Zuora | Quote-based enterprise pricing | Budget for a significant implementation |
| Lago | Open-source core free to self-host; cloud plans quote-based | Lowest licence cost, highest operational responsibility if self-hosted |
A percentage of billing volume looks small until your revenue grows. At $5 million a year in billings, 0.7% is $35,000. Model each vendor at your expected volume in 12 and 24 months, and include payment processing, tax and revenue recognition add-ons.
Platform by Platform
Stripe Billing
Stripe Billing covers subscriptions, invoicing and usage-based prices directly on top of Stripe Payments, with Smart Retries, automatic reminder emails and a customer portal included. For many startups it is the right first billing system: no separate vendor, no sync between billing and payments, and pricing that scales with revenue. It becomes limiting when contracts get complex, when usage volumes are very high, or when pricing changes need finance or sales to configure custom deals without engineering. For those cases Stripe now offers Metronome. If you are comparing Stripe with subscription-first tools, see our Chargebee vs Recurly vs Stripe Billing comparison.
Metronome
Metronome was built for usage-based billing at scale and is now a Stripe product, according to Stripe's own billing pages. It handles very high event volumes, multidimensional rates, prepaid credits, committed spend with draw-down balances, ramps and marketplace transactions, and lets teams manage negotiated contracts without code. It is the reference choice for AI and API companies selling to enterprises. The trade-off is that it is more than a small startup needs.
Orb
Orb is a usage-based billing platform known for flexible pricing models and some of the best developer tooling in the category. It lets teams define metrics in SQL-like terms, test pricing changes against historical usage before launching them, and handle hybrid plans, credits and commitments. Pricing is quote-based. It fits product-led and API-first companies where pricing is a competitive lever and changes often.
Chargebee
Chargebee is a subscription billing platform that has added solid usage capabilities. Its strengths are subscription lifecycle management, dunning and retention, revenue recognition through its revenue module, and a wide integration catalog. It fits subscription-first companies that are adding usage or credits rather than companies whose entire model is metered.
Maxio
Maxio, formed from the merger of Chargify and SaaSOptics, is a finance-led platform: billing, usage, revenue recognition under GAAP and IFRS, and SaaS metrics in one place. Its usage features are less advanced than Metronome or Orb, but its finance reporting is among the strongest for B2B SaaS. It suits companies where the CFO owns billing.
Zuora
Zuora is the long-standing enterprise subscription and usage platform, with deep support for complex contracts, global entities, tax and revenue. It fits large companies with complex multi-entity billing and the resources for a substantial implementation. For most growing SaaS companies, it is more platform than they need today.
Lago
Lago is the main open-source billing platform built around usage-based pricing. The self-hosted core is free, which makes it attractive for engineering-led teams with strict data residency needs or very high volumes. The cost moves from licence to operations: you run, monitor and upgrade it, or pay for the managed cloud.
Which Platform Fits Which Company
- An early-stage SaaS or AI startup already on Stripe: Stripe Billing, then move to Metronome when contracts get complex.
- An AI or API company selling usage to enterprises with commits and credits: Metronome or Orb.
- A product-led company that changes pricing often: Orb.
- A subscription-first SaaS adding usage, with strong dunning needs: Chargebee.
- A finance-led B2B SaaS where rev rec and metrics matter most: Maxio.
- A large enterprise with global entities and complex contracts: Zuora.
- An engineering-led team that wants control and self-hosting: Lago.
Where Automation Fits Around Billing
Billing platforms handle rating and invoicing, but the work around them is often still manual: pushing new contracts from the CRM into billing, alerting customer success when a customer burns through credits, syncing invoices and payments to the ERP, and following up on failed payments with a human touch for large accounts. We build these flows with n8n so billing data moves without exports. Our guides to subscription billing automation and failed payment recovery cover the most common ones.
Frequently Asked Questions
What is the best billing software for usage-based and recurring revenue?
For companies already on Stripe with simple usage, Stripe Billing. For high-volume usage and negotiated enterprise contracts with commits and credits, Metronome or Orb. For subscription-first companies adding usage, Chargebee or Maxio. For large enterprises with complex global billing, Zuora. For a self-hosted open-source option, Lago.
How much does usage-based billing software cost?
Stripe Billing charges 0.7% of billing volume on its pay-as-you-go plan, on top of payment processing. Metronome's Starter plan is reported at 0.8% of billing volume plus event fees. Maxio's Grow plan is reported from $599 a month. Orb and Zuora are quote-based, and Lago's open-source core is free to self-host.
Is Metronome part of Stripe?
Yes. Stripe's billing pages describe Metronome as a Stripe product for usage-based billing, covering usage events, multidimensional rates, negotiated contracts and marketplace transactions.
Can I run usage billing with Stripe alone?
Yes, for straightforward models: Stripe Billing supports metered prices, tiers and usage reporting. Companies with very high event volumes, prepaid credits, committed spend or many custom contracts usually need a dedicated usage platform such as Metronome or Orb.
What is hybrid pricing?
Hybrid pricing combines a fixed component, such as a platform fee or seats, with a usage component, such as API calls, tokens, transactions or storage. It is now the most common model for AI and infrastructure software because it gives predictable revenue and still scales with value delivered.
Sources and Method
Scores are PURIST's editorial assessment using the weighted criteria above. Stripe pricing and the Metronome relationship come from Stripe's billing pricing page. Other figures come from third-party comparisons including Stigg, Solvimon and Dodo Payments, several of which are vendors themselves. Confirm current pricing with each provider.
Moving to usage pricing and worried about the operational side? Book a free automation audit and we will map the flows between your CRM, billing and accounting.
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Purist Team
The PURIST editorial team covers automation, AI agents, and operations strategy for businesses scaling with n8n, Make, and Claude AI.
