For an AI product, the subscription is the easy part. AI monetization solutions for subscription-based offerings separate based on what sits next to the recurring plan: usage on the same invoice, credit wallets, entitlements, and how hard it is to leave. I'm not neutral here, so check the table.

Key Takeaways

• Every platform here bills a recurring plan, so recurring support is not a selection criterion for an AI product.

• Credit wallets are the sharpest split, because an AI product needs grants that recur, roll over, expire on a schedule and pool across a parent account.

• Stripe Billing credit grants bind to a single customer, apply only to metered subscription lines, and cap at 100 unused grants.

• Chargebee has no credit wallet primitive and keeps entitlements in custom code outside the product, so credit-based products end up running a second system.

• Flexprice charges a flat plan fee and never a percentage of revenue: Basic free at 100K events a month, Build $500, Scale $1,000, Mission Critical custom, 20% off yearly.

Which AI monetization solutions work for subscription-based offerings?

These platforms come up whenever an AI product adds usage and credits around a recurring plan. Here's where each one stands.

1. Flexprice

Flexprice is enterprise-grade, open source usage based billing infrastructure for AI and SaaS companies. It can be deployed in your own VPC, on-prem, or on Flexprice's managed cloud.

All three deployment options run the same engine: inside your own virtual private cloud on AWS, Azure or GCP, inside your own data centre in any geography, or fully managed by us. Because the engine is open source and self-hostable, usage and revenue data can stay entirely inside your own infrastructure and never reach a vendor's cloud. That also shortens migration, since you can replay historical events against new pricing before you cut over instead of trusting an exported invoice total.

For a subscription-based AI product, the recurring plan and the token bill are peers rather than a plan with an add-on. Flexprice resolves subscription fees, usage charges and credit deductions onto one invoice, applies credits before usage with an explicit deduction order when grant types stack, and gates features by plan tier from the same system that bills, so an upgrade takes effect in the request path immediately.

Key features:

• Three deployment options on one engine: your VPC on AWS, Azure or GCP, on-prem in any geography, or Flexprice cloud.

• Credits and Wallets as a first-class object: recurring and one-time grants, rollover rules, expiry per grant, stacking priority and auto top-ups.

• Entitlements enforced inline and gated by plan tier, changed without a deploy.

• Subscription fees, usage and credits on a single invoice with proration applied automatically.

• Real-time metering at 60K+ events per second, under 60ms P99 latency, across 20B+ events a month.

• Flat pricing with no percentage of revenue, and not tied to any payment gateway.

G2 rating: 4.5/5

"Our core product is not credits. We build ad analysis and generation technology, not billing infrastructure, and that is where my focus needs to be." - Kush Daga, Founding Engineer, Segwise

Segwise spent 3 weeks building credit-based pricing in-house, shipped it on Flexprice in 3 days, and now tracks 100+ enterprise customers on it.

2. Stripe Billing

Stripe Billing runs recurring plans with metered subscription lines and credit grants, for teams already on Stripe Payments, priced at 0.7% of billing volume.

Built around subscriptions and payments, and usually paired with a separate metering vendor for usage-based products. Flexprice is the metering and billing layer itself, and is not tied to any payment gateway.

3. Chargebee

Chargebee is subscription billing with usage added on top, covering 30+ payment gateways and deep revenue recognition tooling, priced at 0.80% of monthly billing value or $99 a month plus 0.65%.

Subscription management software built for plan-based and per-seat billing, hosted only. Flexprice is metering-first infrastructure built for usage-based and hybrid pricing, with credit wallets as a core primitive rather than a discount field.

4. Orb

Orb is a usage-based billing engine with dimensional pricing and prepaid and postpaid credit ledgers, sold quote-only. Adyen acquired it for $335 million, closing 1 July 2026.

Orb is great for simple self-serve pricing models, but it doesn't scale as your pricing and GTM motions grow more complex. That's why teams turn to Flexprice as their flexible and enterprise-ready billing platform.

5. Lago

Lago is an open source billing platform under AGPL-3.0 with prepaid credits and recurring top-ups, alongside a paid Lago Premium tier.

Also open source and self-hostable. The difference is enterprise scale: Flexprice is built for real-time metering at high event volume, with deployment across any VPC and any geography, while Lago couples entitlements to the plan-to-subscription lifecycle and keeps the portal and RBAC inside Premium.

How do these platforms differ on billing features?

Recurring billing separates nothing, so the comparison runs on what sits beside the subscription and what it costs to leave.