7 Chargebee alternatives for usage-based and AI billing

Chargebee alternatives split into four architecture groups: subscription-first (Stripe Billing), invoice-based (Metronome, Orb, Lago), real-time (Credyt, Stigg), and hybrid (Flexprice). Chargebee itself is subscription-first, so usage accrues to an invoice at cycle end; the right alternative depends on whether your product carries real per-usage cost. This article ranks all seven on architecture, pricing, and fit.

Chargebee alternatives at a glance

The split that matters is when usage gets billed: at cycle end on an invoice, or at the moment it happens. A real-time usage-based billing platform authorizes and bills usage as it happens; subscription-first and invoice-based platforms bill after the action. If every request your product serves costs you money (AI inference, GPU seconds, API calls), that timing difference decides whether you find out about unprofitable usage in milliseconds or at month end.

How the alternatives compare on architecture and features

Architecture is the first row for a reason: it determines every other row. Subscription-first and invoice-based platforms bill usage after the action; real-time platforms price and debit the customer's balance the moment usage happens. Hybrid pricing support (a subscription plus usage charges) exists everywhere, but how it settles differs by architecture.

What do Chargebee alternatives cost?

At a 100-customer, $2,000-per-month scenario, Credyt costs $90 per month, Stigg $448, Flexprice $500 to $1,000, and Orb roughly $720. Stripe Billing adds about $10 in Billing fees on top of payment processing. Metronome and Lago's cloud tiers do not publish pricing and require a sales conversation. The scenario uses 100 customers, $20 average spend per customer, 1,000 events per customer per month, 5 seats, and 100,000 monthly events, so every platform is compared on the same baseline (as of July 2026).

Here is the honest part: at this scale, Chargebee is the cheapest option on the table. Teams leave it over architecture, not price.

Pricing notes:

• Chargebee: Chargebee's free Starter tier covers this scenario; it carries no platform, per-customer, or seat fee until $250K cumulative (lifetime) billing, after which a 0.75% overage applies. At $2,000/mo a business would not reach the cap for years, so the effective cost is $0 plus the merchant's PSP rate. Chargebee does not process payments itself. The first paid tier (Performance) is $599/mo and is only justified at far higher volume. Source: Chargebee pricing, accessed June 2026.
• Stigg: Stigg's per-unit costs for this scenario total ~$193, but the Growth plan has a contract minimum of $448/mo (billed annually), so that is the effective cost at this scale. Source: Stigg pricing, accessed April 2026.
• Flexprice: Starter is $500/mo; Premium is $1,000/mo. Flexprice does not publicly confirm whether real-time prepaid credit balance, recurring wallet top-ups, and entitlement management are available in the Starter tier; if these features require Premium, the effective comparison cost is $1,000/mo. The open-source self-hosted version is excluded as it does not include these features. Annual billing reduces figures by 20% ($400/mo Starter, $800/mo Premium). Source: Flexprice pricing, accessed April 2026.
• Orb: Orb no longer publishes pricing. Estimate based on previously public pricing captured by third-party analysis and may not reflect current rates.
• Stripe Billing: The Starter plan at 0.5% of recurring payments covers the scenario ($10 on $2,000); payment processing at 2.9% + $0.30 per US card charge is separate and card-mix dependent. Source: Stripe Billing pricing, accessed April 2026.
• Lago: Both cloud tiers (Business, Enterprise) require sales contact. The AGPLv3 core is free to self-host but excludes the customer portal, credit notes, dunning, and tax integrations. Source: Lago pricing, accessed April 2026.

Why look for an alternative to Chargebee?

Teams leave Chargebee because their billing model changed shape, not because Chargebee stopped working. It remains a strong subscription management platform: lifecycle automation, Smart Dunning, revenue recognition, and 25+ payment gateways are genuine strengths, and the free Starter tier makes it hard to beat on cost for a small subscription business.

The friction starts when usage enters the picture. Chargebee's metered billing accrues usage to an invoice at cycle end, and its promotional credits are invoice adjustments rather than a balance the customer pre-funds and draws down (Chargebee promotional credits docs, accessed June 2026). There is no pre-usage authorization primitive: nothing checks a customer's balance before an expensive action runs.

For a subscription product, none of this matters. For a product where each request carries inference cost, all of it does.

The market is moving in exactly that direction. 35% of AI companies now use consumption-based pricing and 37% plan a pricing model change within 12 months (ICONIQ, January 2026). Credit-based pricing grew 126% year-over-year across 498 tracked SaaS companies, including Figma and HubSpot (PricingSaaS Trends Report, Q1 2026).

Model inference runs at roughly 23% of revenue for scaling-stage AI companies (ICONIQ, January 2026), which makes per-customer margin a billing-architecture question. OpenAI's applied engineering lead Evan Morikawa described why the company left its homegrown system: "We didn't have the flexibility and customization to support usage-based pricing or enterprise contract complexity" (Metronome customer story, October 2024). The same architectural fork drives evaluations of the best Stripe Billing alternatives for usage-based billing.

The 7 Chargebee alternatives, ranked

The seven alternatives are ranked by architectural fit for products with real per-usage costs: real-time platforms first, subscription-first platforms where consolidation is the draw. Each card covers positioning, pricing, three strengths, and two trade-offs.

1. Credyt

Credyt is real-time monetization infrastructure for AI products: usage is authorized against the customer's balance before the work starts, then priced and debited in one atomic operation when the event arrives.

Best for: Real-time billing for AI products with variable per-request costs.

Pricing: $0 to start with 10 free active wallets, then $1 per Monthly Active Wallet in production; first 1M events per month free. No percentage of revenue (as of July 2026).

Strengths:

• Pre-usage authorization: the platform checks the customer's balance via API before an expensive action runs, then Credyt prices and debits the usage atomically.
• Native multi-asset balances: USD, tokens, GPU hours, and custom units held in a single customer wallet.
• Event-level profitability analytics: revenue and cost correlated per event, per customer, and per product.

Trade-offs:

• No enterprise contract machinery (multi-year commitments, amendments, true-ups).
• Proprietary and cloud-only, with a smaller integration ecosystem than Stripe or Chargebee.

Learn more: Credyt for AI products.

2. Stigg

Stigg is a monetization control layer that sits between your product and your billing system: entitlements, credits, and pricing run in Stigg in real time, while invoicing and payment stay in Stripe, Zuora, or Chargebee.

Best for: Real-time entitlements and credits on top of an existing billing system, including Chargebee itself.

Pricing: Free sandbox; Growth from $448/month billed annually with per-subscription and per-seat unit fees; Scale is custom (Stigg pricing, accessed April 2026).

Strengths:

• Typed entitlement checks with documented P95 latency under 100ms, ahead of the downstream billing cycle.
• Credits suite with stacked grants, per-grant priority and expiry, and an append-only ledger.
• No-code pricing console with plan versioning, so pricing changes ship without engineering tickets.

Trade-offs:

• Billing still settles downstream at cycle end; Stigg orchestrates rather than replaces the billing system.
• No hosted billing portal; customer-facing UI is embed-only via React, JavaScript, or Vue widgets.

Learn more: Stigg docs.

3. Stripe Billing

Stripe Billing is Stripe's subscription and usage billing product, tightly coupled to Stripe Payments, tax, and revenue recognition, and strengthened by the Metronome acquisition completed in January 2026.

Best for: Teams consolidating payments, subscriptions, and invoicing on one provider.

Pricing: 0.5% of recurring payments on Starter, 0.8% on Scale, plus standard Stripe processing fees (Stripe Billing pricing, accessed April 2026).

Strengths:

• The deepest payments infrastructure in the group: 135+ currencies, 50+ payment methods, fraud, and tax on one account.
• Mature developer tooling: SDKs, documentation, and a large third-party integration catalog built around Stripe as the default payments infrastructure.
• Enterprise finance tooling: ASC 606 revenue recognition, NetSuite and Salesforce integrations, Data Pipeline.

Trade-offs:

• Requires Stripe as the payment processor; switching or mixing PSPs means rebuilding billing.
• Credit grants are invoice adjustments on monetary balances; no custom asset primitive and no customer-facing balance top-up in the hosted portal.

Learn more: Stripe Billing docs.

4. Metronome

Metronome is enterprise usage-based billing built for high event volumes and complex contracts, now part of Stripe after the January 2026 acquisition.

Best for: High-volume enterprise metering with custom contracts and multi-motion GTM.

Pricing: Not publicly available; requires a sales conversation (checked April 2026).

Strengths:

• Streaming aggregation architecture processing billions of usage events monthly for customers including OpenAI and Anthropic.
• SQL-based billable metrics for complex aggregation logic without custom pipelines.
• First-class enterprise contracts: commitments, amendments, true-ups, and cloud marketplace billing.

Trade-offs:

• Usage is billed at cycle end; spend alerts and cost previews exist, but there is no pre-usage authorization.
• Setup assumes engineering and SQL expertise, and the customer portal is build-your-own via embeddable dashboards.

Learn more: Metronome vs Credyt comparison.

5. Orb

Orb is an enterprise revenue platform for companies that treat pricing as a product function, with custom SQL metrics, dimensional pricing, and pricing simulation against historical usage.

Best for: Enterprise usage-based billing where pricing iterates frequently.

Pricing: Not publicly available; third-party analysis of previously public pricing suggests ~$720/month at small scale (accessed February 2026).

Strengths:

• Pricing simulation: validate a pricing change against historical usage before customers see it.
• Dimensional pricing across region, model, tier, and customer segment.
• Backfills and automatic invoice recalculation when late usage data arrives.

Trade-offs:

• Post-usage invoicing: threshold invoicing can fire mid-cycle but remains post-consumption.
• Implementation assumes dedicated billing engineering; credit pools are platform-controlled with no customer self-service top-up.

Learn more: Orb docs.

6. Lago

Lago is open-source billing infrastructure: an AGPLv3 core for metering, subscriptions, and invoicing that engineering-led teams can self-host, with managed cloud and enterprise tiers on top.

Best for: Engineering-led teams that want code transparency, self-hosting, or data residency control.

Pricing: AGPLv3 core is free to self-host; Business and Enterprise cloud tiers require sales contact (Lago pricing, accessed April 2026).

Strengths:

• Fully auditable open-source core with 9,500+ GitHub stars and active development.
• Broad pricing model support: subscriptions, usage, hybrid, coupons, prepaid credits, entitlements.
• Deployment flexibility: Docker Compose self-host, managed cloud, VPC, or on-premise.

Trade-offs:

• The free core excludes the customer portal, credit notes and refunds, email invoices, dunning, and tax integrations; production parity means paid tiers or building those pieces.
• The authoritative wallet balance updates when an invoice is finalized; the real-time ongoing balance is a premium estimate refreshed every 5 minutes, not a per-event debit.

Learn more: Lago docs.

7. Flexprice

Flexprice is an open-source monetization platform for early-stage SaaS and AI teams, pairing real-time event metering with a wallet system and a no-code pricing dashboard.

Best for: Early-stage teams adopting usage or credit billing for the first time.

Pricing: Free tier (100K events/month, 3-month validity); Starter $500/month; Premium $1,000/month; 20% discount billed annually (Flexprice pricing, accessed April 2026).

Strengths:

• Wallets are core infrastructure with documented lifecycle: create, top-up, auto-recharge, alerts, and promotional credit grants.
• No-code pricing dashboard, so non-engineers can change pricing without deployments.
• AGPLv3 core with self-hosting via Docker Compose or AWS ECS/EKS.

Trade-offs:

• Usage charges debit the wallet when an invoice is generated and paid, not as each event arrives; there is no pre-usage authorization gate.
• The customer portal is read-only and auto top-up is merchant-controlled, so customers cannot self-serve payments or thresholds.

Learn more: Flexprice docs.

How to choose a Chargebee alternative

If your product bills for AI usage with real per-request costs and customers pre-fund a balance: Credyt is the best fit, because authorization happens before the cost is incurred and billing is atomic with usage.

If you want to keep Chargebee for invoicing but need real-time entitlements and credits: Stigg is the best fit; it orchestrates on top of Chargebee rather than replacing it.

If you sell six-figure enterprise contracts with high event volumes and a sales-led motion: Metronome is the best fit; pick Orb instead when frequent pricing iteration and simulation matter more than contract complexity.

If open source, self-hosting, or data residency is the constraint: Lago is the best fit for engineering-led teams; Flexprice fits earlier-stage teams that want wallets and a no-code dashboard out of the box.

If you mainly want payments, subscriptions, and billing consolidated on one provider: Stripe Billing is the best fit, provided you are committed to Stripe as your processor.

Teams evaluating alternatives to Chargebee for usage-heavy products should shortlist by architecture first and feature lists second; every platform above supports subscriptions, but only some can bill usage as it happens.

Bottom line

The Chargebee alternatives worth shortlisting differ on one axis before any other: whether usage is billed after the action (Chargebee, Stripe Billing, Metronome, Orb, Lago) or authorized and billed as it happens (Credyt, Stigg at the entitlement layer). A second axis then narrows the shortlist: self-serve public pricing (Credyt, Stigg, Flexprice) versus sales-led contracts (Metronome, Orb, Lago's cloud tiers). Subscription-dominant businesses often have no reason to leave Chargebee at all. Credyt is the right choice when each request costs you real money and your customers draw down a pre-funded balance.

Frequently asked questions

The questions teams ask most about Chargebee alternatives concern pricing, architecture differences, and whether to replace or extend an existing billing system.

Is Chargebee free?

Chargebee's Starter tier is free until $250K in cumulative lifetime billing, after which a 0.75% overage fee applies. The first paid tier, Performance, is $599/month with an annual commitment (accessed June 2026).

What is the difference between subscription-first and usage-based billing platforms?

Subscription-first platforms like Chargebee and Stripe Billing are built around recurring plans, with metered usage added on and settled by invoice. Purpose-built usage-based billing platforms make measured consumption the primary billing object, either invoicing it at cycle end or billing it in real time.

Which Chargebee alternatives are open source?

Lago and Flexprice both offer AGPLv3 open-source cores that can be self-hosted. In both cases, production features such as customer portals, credit notes, or dunning sit in paid tiers.

Can I keep Chargebee and still get real-time credit control?

Yes. Stigg runs entitlement checks and credit consumption in real time while leaving invoicing and payment collection in Chargebee, so teams can add usage control without a billing migration.

Which Chargebee alternative fits AI products best?

It depends on scale and motion. Credyt fits AI products with per-request costs and pre-funded balances; Metronome and Orb fit enterprise AI companies with high event volumes and sales-led contracts; Lago fits AI teams that need to self-host.

Does leaving Chargebee mean replacing my payment processor?

Usually not. Metronome, Lago, Stigg, and Credyt all work with an existing Stripe account, and Chargebee itself never processed payments. Only Stripe Billing ties billing to a specific processor.