The best usage-based billing platforms for vibe coders include Credyt for real-time AI billing with prompt-based setup inside Cursor, Lovable, Bolt, and Claude Code, Stripe Billing for subscription-first SaaS with metered overages, Lago for open-source self-hosted billing, Flexprice for early-stage AI teams that want a no-code pricing dashboard, and Stigg for entitlement and credit orchestration over an existing Stripe account. These five tools split on one architectural axis: whether usage is authorized and billed as it happens, or captured and invoiced at cycle end. Stripe Billing is the default first try for most vibe coders, but it is subscription-first and bills after the action, which is why teams running per-token, per-request, or prepaid-credit AI pricing look elsewhere.

At a glance: ranking

Feature comparison

Why look for an alternative to Stripe Billing for usage-based billing

Stripe Billing is the default first try for most vibe coders, and the reasons are real. The product crossed $500M in annual run-rate revenue in early 2025 (Fortune, February 2025). It sits on top of Stripe Payments with mature SDKs, 135+ currencies, 50+ payment methods, automatic tax handling, and a hosted Customer Portal that finance teams already understand. If you are building a subscription-first SaaS with predictable monthly fees and a small metered overage component, Stripe Billing is the lowest-friction path to revenue.

The friction shows up when AI products get specific. Stripe Billing's architecture is built around the recurring invoice cycle. Per-request, per-token, or per-inference pricing requires real-time event ingestion, dimensional pricing, and the ability to authorize spend before the cost is incurred. None of those are native to Stripe Billing. The Meter Events API is post-usage; it records what already happened.

Setup time is the other constraint. Warp and MiniMax shipped metered billing using Stripe APIs in two to three weeks (Metronome AI Pricing in Practice 2025 Field Report). Stripe's own billing lead acknowledged users reporting up to six months for small billing changes on legacy stacks (Fortune, February 2025). For a vibe coder who shipped the product itself in a weekend and needs to iterate pricing weekly, those timelines are disqualifying.

The market splits into three architectures. Real-time end-to-end billing collapses authorization, pricing, and balance debit into one atomic operation (Credyt). Real-time orchestration handles entitlements and credits in real time but settles billing through a downstream system at cycle end (Stigg). Invoice-based billing meters usage events through a dedicated metering layer and reconciles them into an invoice at cycle end (Lago, Flexprice's primary path). Each architecture is current and valid; the right pick depends on the cost structure of the product being billed.

The 5 platforms compared

1. Credyt

Real-time, end-to-end billing infrastructure built for AI products with prompt-based setup inside AI coding tools.

Best for: Real-time AI billing for solo builders shipping inside Cursor, Lovable, Bolt, or Claude Code.

Pricing: $1 per Monthly Active Wallet. The first 10 wallets are free every month. The first 1M events per month are free. No revenue percentage. No seat fees. At 100 active customers: $90/month + pass-through PSP fees.

Strengths:

• MCP server (mcp.credyt.ai) connects natively to Cursor, Windsurf, Claude Code, Codex, Lovable, Bolt, Replit, and V0. Builders add billing through a prompt conversation inside the tool they already use, with no backend code or webhook configuration required.
• Per-usage authorization via the Wallet API. The platform queries the customer's balance before the action runs and decides whether to allow, throttle, or block based on the team's policy. Credyt provides the real-time balance state; the usage decision belongs to the platform.
• Native multi-asset wallets. A single wallet can hold USD, tokens, GPU hours, and custom units in parallel.
• Drop-in branded billing portal with self-service top-up and customer-configurable auto-recharge thresholds (saved card required).
• Transparent public pricing. No sales call to start.

Trade-offs:

• Newer platform with a smaller partner ecosystem than Stripe.
• Cloud-only deployment; no self-hosting option.
• Enterprise contract management (multi-year commitments, backdating, true-ups) is not first-class.
• Requires customers to prepay into a balance. Not a fit for post-pay enterprise billing where customers expect a quarterly invoice.

Learn more: Credyt's MCP server and prompt-based setup.

2. Stripe Billing

Subscription-first billing on top of Stripe Payments, with metered usage support added through Subscription Items and the Meter Events API.

Best for: Subscription-first SaaS with metered overages and global payment coverage.

Pricing: 0.5% (Starter) or 0.8% (Scale) on recurring payments, plus Stripe Payments at 2.9% + $0.30 per US card transaction. Custom enterprise pricing available (Stripe Billing pricing, accessed April 2026).

Strengths:

• Default payments infrastructure, with mature SDKs, extensive docs, and third-party tutorials covering most edge cases.
• 135+ currencies, 50+ payment methods, and global tax handling.
• Hosted Customer Portal for subscription management.
• ASC 606 revenue recognition, NetSuite and Salesforce integrations.
• Smart Retries for failed-card recovery, with documented ~9% revenue lift.
• Metronome acquired January 14, 2026; the post-acquisition roadmap signals deeper metering and contract primitives, with GA dates not yet public (Stripe newsroom, January 2026).

Trade-offs:

• Subscription-first architecture. Usage billing accumulates and resolves at invoice cycle end. No real-time wallet debit.
• Customer Portal is invoice-centric. No real-time prepaid balance, no self-service top-up.
• No native multi-asset wallet primitive. Tokens and GPU hours have to be modeled as monetary credits.
• Tied to Stripe Payments. Replacing or mixing PSPs means rebuilding billing.
• Setting up usage-based billing requires combining Subscription Items, the Meter Events API, and custom application logic. Realistic time-to-ship is weeks, not hours.

3. Lago

Open-source invoice-based billing platform under AGPLv3, with managed cloud, AI agents, and a white-label embedded option on commercial tiers.

Best for: Open-source AGPLv3 billing for engineering-led teams with code transparency or self-hosting needs.

Pricing: AGPLv3 core is free to self-host. Cloud tiers (Business, Enterprise) are sales-led as of April 2026. Public discussion in April 2024, around Lago's $22M Series A (TechCrunch, March 2024), cited a $3,000/month starting cloud tier; current pricing is not published.

Strengths:

• AGPLv3 core. Auditable, forkable, self-hostable on Docker Compose.
• Active development. 9,500+ GitHub stars and 183 releases shipped through April 2026.
• Native PSP integrations for Stripe, Adyen, and GoCardless.
• Up to 5 active wallets per customer with priority ordering.
• SOC 2 Type II certified.
• Lago AI agents (February 2026) and Lago Embedded white-label (March 2026).

Trade-offs:

• Invoice-based architecture. The authoritative wallet balance updates at invoice finalization, not on event ingestion.
• "Real-time burndown" maps to a 5-minute-refresh ongoing-balance estimate, available only on premium tiers.
• The AGPLv3 core does not include the customer portal, credit notes and refunds, automatic dunning, tax integrations, or CRM and accounting connectors. All are paid-tier features. Open-source is "free as in AGPLv3 core," not "free as in everything you need to run a billing system in production."
• Cloud pricing is not public.
• Self-hosting adds infrastructure (Postgres, Redis, five or more application services) and ongoing engineering for upgrades.

4. Flexprice

Open-source hybrid billing platform with a no-code dashboard, designed for early-stage AI and SaaS teams adopting usage pricing for the first time.

Best for: Early-stage AI teams adopting hybrid usage-and-credit pricing through a no-code dashboard.

Pricing: Free tier (100K events per month, 3-month validity); Starter $500/month ($400/month annual); Premium $1,000/month ($800/month annual); Enterprise custom (Flexprice pricing, accessed April 2026).

Strengths:

• AGPLv3 open-source core. 3,600+ GitHub stars, 4,633 commits.
• No-code pricing dashboard for non-engineers.
• ClickHouse-backed real-time event metering.
• Wallet system with auto top-up, low-balance alerts, and promotional credit grants.
• Multiple PSP integrations: Stripe, Razorpay, Paddle, Chargebee.
• Customer Simplismart reports 6x faster pricing iteration and reclaimed 30% of engineering bandwidth; Segwise completed core implementation in approximately two weeks (Flexprice customer stories, accessed April 2026).

Trade-offs:

• Usage-based wallet debit is invoice-driven, not event-driven. Charges accumulate and debit on INVOICE_PAYMENT, not at event ingestion. If you need real-time blocking before a model runs, this is the wrong choice.
• The customer portal is read-only. No self-service top-up.
• Auto top-up is merchant-controlled, not customer-controlled.
• Advanced features (real-time prepaid balance, recurring top-ups, entitlement management) require paid tiers.
• PSP support is limited to four providers; no bring-your-own PSP model.

5. Stigg

Real-time monetization control layer that orchestrates entitlements, pricing, and credits across an existing downstream billing system (Stripe, Zuora, or Chargebee).

Best for: Real-time entitlements and credit orchestration on top of Stripe, Zuora, or Chargebee.

Pricing: Sandbox free; Growth from $448/month billed annually with a contract minimum; Scale enterprise custom (Stigg pricing, accessed April 2026).

Strengths:

• Typed entitlement API with documented P95 latency under 100ms.
• Unified Boolean, Numeric, and Metered feature primitive in one model.
• Credits Suite with stacked grants: priority, expiry, prepaid pools, custom consumption formulas, and an append-only ledger.
• No-code pricing console for non-engineers.
• Embeddable React, JavaScript, and Vue widgets for pricing tables and customer portals.
• Broad SDK coverage: Node, Python, Go, Ruby, Java.
• Billing-system agnostic. Connects to Stripe, Zuora, Chargebee, AWS Marketplace, and the App Store.
• Named customers include Webflow, Miro, Cloudinary, AI21, New Relic, PagerDuty, Upwork, and Airbyte.

Trade-offs:

• Does not handle the billing transaction itself. Payment collection runs through the downstream billing system at cycle end.
• Requires a downstream billing system already in place. Not a fit for vibe coders starting from scratch.
• No hosted redirect-style billing portal. Embed-only widgets.
• No profitability analytics; no event-level cost ingestion.
• $448/month Growth floor with a contract minimum.
• Sandbox is non-production only.
• No documented MCP server or AI coding tool integration.

How to choose

If you are a solo builder shipping an AI app inside Cursor, Lovable, Bolt, Claude Code, or Replit and want to add billing through a prompt conversation rather than backend code: Credyt fits. The MCP server is the only documented prompt-based setup path among the five platforms above. The integration becomes a question you ask the AI coding tool, not a sprint.

If you are building a subscription-first SaaS with predictable monthly fees and a small metered overage component, and your customers expect a hosted Stripe Customer Portal: Stripe Billing fits. It is the lowest path of resistance for subscription billing where usage is the exception, not the rule.

If your team needs code transparency, on-premise or VPC deployment, or self-hosting for compliance reasons: Lago fits. Budget for either a cloud sales conversation or premium-tier engineering work for the customer portal, dunning, credit notes, and integrations. The AGPLv3 core alone is not enough to run production billing without rebuilding those pieces in-house.

If you are an early-stage AI or SaaS team adopting hybrid usage-and-credit pricing through a dashboard, and you do not need real-time balance enforcement on every event: Flexprice fits. The wallet debit is invoice-driven; if you need real-time blocking before a model runs, pick a real-time architecture instead.

If you already run Stripe, Zuora, or Chargebee and want to centralize entitlements and credits in one no-code control layer above your billing system: Stigg fits. Stigg sits above the billing system rather than replacing it. If you are starting from scratch with no billing system, Stigg requires you to set up a downstream system first.

Bottom line

The five platforms above cover four architectures: real-time end-to-end billing (Credyt), subscription-first with metered overages (Stripe Billing), invoice-based open-source (Lago), hybrid with a wallet add-on (Flexprice), and real-time orchestration over a downstream billing system (Stigg). For vibe coders specifically, the pivotal axis is setup time.

Stripe's Meter Events API and Subscription Items integration takes weeks even for experienced engineers. Lago and Flexprice ship to production over multiple weeks once self-hosting and webhooks are wired. Stigg requires a downstream billing system already in place. Credyt's MCP server changes the shape of the integration: billing setup happens through a prompt inside the AI coding tool the vibe coder is already using. Which fits depends on the cost structure of the product being billed and how much engineering time is available to spend on billing instead of product. See Credyt's transparent per-wallet pricing for one reference point.

FAQ

How do I add usage-based billing to my app?

The fastest path depends on the AI coding tool you build with. If you use Cursor, Lovable, Bolt, Claude Code, Replit, Windsurf, V0, or Codex, you can add billing through a prompt by connecting the Credyt MCP server (mcp.credyt.ai) and asking the tool to wire it up. If you build on Stripe, the path is to define a Meter, add a Subscription Item, and submit usage events from your product code. If you self-host, Lago's AGPLv3 core covers metering and invoicing on Docker Compose, with paid tiers required for the customer portal, dunning, and integrations. Flexprice and Stigg both support pricing dashboards, but Stigg requires a downstream billing system already in place.

What billing platform works best for AI applications?

It depends on how your costs hit. AI products with per-token, per-request, or per-inference infrastructure costs benefit from real-time architectures (Credyt, Stigg) because they can authorize spend before the cost is incurred. AI infrastructure costs run 35-40% of revenue for AI-native companies versus around 10% for traditional SaaS (Bessemer Venture Partners, State of AI 2025). Billing architecture is a margin-defense decision in this environment, not just a convenience. For subscription-led products with a small AI overage feature, Stripe Billing is fine. For high-throughput enterprise workloads with quarterly contracts, invoice-based platforms designed for that use case (Metronome, Orb) are a better fit; those are covered separately for a developer audience in the sister listicle.

Can I use Stripe and a usage-based billing platform together?

Yes. Most purpose-built usage-based billing platforms integrate with Stripe rather than replacing it. Stripe handles payment processing; the usage-based billing platform handles metering, pricing, wallets, and invoice generation. This split is the norm: payments stay where they are; billing logic moves to a tool designed for usage. Stigg is explicitly architected as an orchestration layer over Stripe (or Zuora, or Chargebee). Credyt and Lago integrate with Stripe natively for payment collection.

Are open-source billing platforms truly free?

The AGPLv3 cores of Lago and Flexprice are free to self-host. The cost to reach production isn't zero. Lago's AGPLv3 core doesn't include the customer portal, credit notes and refunds, automatic dunning, tax integrations, CRM connectors, or AI agents. All are premium features.

Flexprice's open-source tier requires the paid tier for entitlement management and recurring wallet top-ups. Add infrastructure (Postgres, Redis, Docker), upgrades (Lago has shipped 183 releases through April 2026), and engineering time for webhook wiring and PSP integration. Open-source is "free as in AGPLv3 core," not "free as in everything you need to run a billing system in production."