Alternatives to Metronome for AI billing (2026)

Alternatives to Metronome split into three architectures: real-time billing (Credyt, Stigg), invoice-based billing (Orb, Lago), and hybrid (Flexprice). With real-time platforms, usage is authorized and billed as it happens; with invoice-based platforms, it is billed after the cycle closes. This article ranks all five on architecture, pricing, and fit.

At a glance: ranking

Five platforms cover the three alternative architectures to Metronome: Credyt and Stigg bill in real time, Orb and Lago are invoice-based, and Flexprice is hybrid. Metronome, part of Stripe since January 2026, is enterprise-sized and sales-led, which is why smaller and AI-native teams evaluate the alternatives below. For the wider field beyond the Metronome question, see the roundup of usage-based billing software.

Credyt ranks first for AI products specifically because it enables per-usage authorization: the platform checks the customer's balance before each request runs, and Credyt bills in real time as usage happens. That is the requirement invoice-based platforms cannot meet. It is not the right pick for every team; the cards and the decision guide below name when each alternative wins.

How do the five alternatives compare on features?

The five alternatives differ most on one axis: when usage is billed. Credyt and Stigg act in real time; Orb, Lago, and Metronome bill after the cycle; Flexprice meters in real time but debits on invoice. The table below adds Metronome as the reference column so you can see what you are comparing against.

Values are from each platform's documentation and pricing pages, accessed April 2026 (Orb docs, Stigg docs, Lago docs, Flexprice docs, Metronome docs). The table does not cherry-pick: Credyt is not open source and does not support multi-year enterprise contracts, both of which are genuine reasons to pick a different platform.

How much do Metronome alternatives cost?

At a 100-customer scenario, Credyt costs $90 per month, Stigg costs $448 per month, Flexprice costs $500 to $1,000 per month, and Orb costs roughly $720 per month. Lago's cloud tiers and Metronome both require a sales conversation; Lago's open-source core is free to self-host plus infrastructure cost. The scenario uses 100 customers, $20 average revenue each, 1,000 events per customer per month, 5 platform seats, and 100,000 monthly events, so every platform is measured on the same baseline.

Pricing notes:

• Credyt: $0 platform fee + $90 per-customer ($1 per Monthly Active Wallet × 90 paid wallets; first 10 free) + $0 seats + $0 events (within the 1M/month allowance). Source: Credyt pricing, accessed June 2026.
• Orb: Orb no longer publishes pricing. Estimate based on previously public pricing captured by third-party analysis and may not reflect current rates.
• Stigg: Stigg's per-unit costs for this scenario total ~$192, 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.
• Lago: Lago's cloud pricing is not publicly listed; as of April 2026 both Business and Enterprise tiers require sales contact. The self-hosted AGPLv3 core is free to run but does not include the customer portal, credit notes and refunds, automatic dunning, or tax integrations. Source: Lago 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. Annual billing reduces figures by 20%. Source: Flexprice pricing, accessed April 2026.
• Metronome: Metronome does not publish pricing. This scenario cannot be computed from public information. Metronome does not process payments directly; payment collection is pass-through via the customer's PSP (typically Stripe) at the PSP's published rates. Source: Metronome website, accessed April 2026.

Why do teams look for a Metronome alternative?

Metronome is enterprise invoice-based billing, and as of January 2026 it is part of Stripe, which completed the acquisition on January 14, 2026. Three things push non-enterprise AI teams to look elsewhere. First, Metronome is sized for scale: its named customers are OpenAI, Anthropic, Databricks, and NVIDIA, and the post-acquisition focus, in Metronome's own words, is its largest and fastest-growing customers. Public pricing and self-serve onboarding were never the point.

Second, the architecture bills usage after the cycle closes. For an AI product, that timing is a margin problem, not a convenience one. AI-native gross margins run 50 to 60 percent against 80 to 90 percent for classic SaaS (Bessemer, February 2026), and every inference call carries real cost. When the bill arrives 30 days after the usage, an unprofitable customer compounds before anyone notices.

Pricing is also moving fast. 37 percent of AI companies plan a pricing-model change within 12 months (ICONIQ, January 2026), and Growth Unhinged tracked more than 1,800 pricing changes across the top 500 SaaS and AI companies in 2025 (Growth Unhinged, June 2025).

Third, the Stripe acquisition routes any Metronome evaluation through an integrating roadmap, which independent platforms do not carry. For the Credyt and Metronome detail specifically, see the Credyt vs Metronome comparison. For a neutral directory view, aibilling.dev keeps a current list of Metronome alternatives.

The five platforms

Each card covers the same five points (positioning, pricing, strengths, trade-offs, and a learn-more link) on the 100-customer baseline from the pricing section. Architecture, whether real-time, invoice-based, or hybrid, is the organizing axis.

1. Credyt

Credyt is real-time billing infrastructure for AI products. The platform checks the customer's balance before each request runs, then prices the usage and debits the balance in one atomic operation as the event arrives.

Best for: real-time billing for AI products with variable, per-request infrastructure costs.

Pricing: $1 per Monthly Active Wallet, first 10 wallets free, no platform fee, no revenue percentage, first 1M events per month included. Public (Credyt pricing, accessed June 2026).

Strengths:

• Per-usage authorization: the platform can block a request before the cost is incurred, not discover it at invoice time.
• First-class wallet with native multi-asset balances (USD, tokens, GPU hours, custom units) under one customer balance.
• Hosted, branded billing portal the platform links to from its app, with customer-controlled auto top-up; no frontend engineering required.
• Event-level profitability analytics per customer, feature, and workload.

Trade-offs:

• Not built for high-volume enterprise contract billing (no multi-year commitments, amendments, or true-ups).
• Cloud-only; no self-hosted or open-source option.

Learn more: Credyt platform.

2. Orb

Orb is an enterprise revenue platform for companies that treat pricing as a core product function. It meters high event volumes with custom SQL metrics and bills them on a configurable invoice cycle.

Best for: high-volume, enterprise invoice-based metering with SQL-defined metrics.

Pricing: not public; enterprise and sales-led. Third-party estimates put it around $720 per month at small scale (Orb, accessed April 2026).

Strengths:

• Custom SQL metrics for unusual aggregation logic without bespoke pipelines.
• Pricing simulation against historical usage before a change ships.
• High-throughput event processing and multi-year enterprise contracts.
• Backfill and automatic invoice recalculation when late data arrives.

Trade-offs:

• Post-usage invoicing; no real-time balance debit before consumption.
• No public pricing, and setup needs billing-engineering resources.

Learn more: Orb.

3. Stigg

Stigg is a monetization control layer that sits between a product and its billing system. It runs entitlement checks and credit consumption in real time, while invoicing and payment settle downstream in Stripe, Zuora, or Chargebee.

Best for: real-time entitlements and credits layered over an existing billing engine.

Pricing: public. Sandbox is free; Growth starts at $448 per month (billed annually) with per-subscription and seat fees; Scale is custom (Stigg pricing, accessed April 2026).

Strengths:

• Typed entitlement API with documented sub-100ms P95 pre-usage checks.
• Credits suite with stacked grants, expiry, and explicit drawdown order.
• No-code pricing console and billing-system agnostic orchestration.

Trade-offs:

• No hosted redirect portal; the customer billing UI is embed-only widgets.
• No event-level profitability analytics, and billing still settles downstream at cycle end, so it is real-time for entitlements and cycle-end for billing.

Learn more: Stigg.

4. Lago

Lago is an open-source billing platform for usage-based, subscription, and hybrid models. It meters usage in real time and generates invoices at cycle end; the AGPLv3 core is free to self-host.

Best for: open-source, self-hosted usage-based billing with full code control.

Pricing: the open-source core is free to self-host (infrastructure and engineering cost only); cloud Business and Enterprise tiers require sales (Lago pricing, accessed April 2026).

Strengths:

• AGPLv3 core that is auditable, forkable, and self-hostable at no license cost.
• Broad pricing-model support and extensive native integrations.
• SOC 2 Type II certified, with active development and a large community.

Trade-offs:

• Invoice-based: the authoritative wallet balance updates at invoice finalization, not on each event.
• The customer portal, credit notes, dunning, and tax integrations are premium features, and self-hosting carries infrastructure and maintenance cost.

Learn more: Lago.

5. Flexprice

Flexprice is open-source monetization infrastructure for early-stage AI and SaaS teams. It meters usage in real time and supports usage-based, credit-based, and hybrid pricing through a no-code dashboard.

Best for: early-stage teams wanting usage plus credits with a no-code dashboard.

Pricing: public. Starter is $500 per month and Premium is $1,000 per month (20 percent off on annual billing); an open-source self-host option is available (Flexprice pricing, accessed April 2026).

Strengths:

• First-class wallet with auto top-up and low-balance alerts.
• No-code pricing dashboard for non-engineers.
• Real-time metering on a ClickHouse-backed pipeline, plus an AGPLv3 self-host option.

Trade-offs:

• Automatic usage debit is invoice-driven, not per-event.
• The customer portal is read-only (no self-service top-up), and wallet credits use a fixed USD conversion rather than independent assets.

Learn more: Flexprice.

How to choose

If you bill per AI inference and need authorization before the model runs: Credyt is the strongest pick. Real-time per-usage authorization lets the platform block a request before the cost is incurred, and pricing is public.

If you need high-volume enterprise invoice-based metering with multi-year contracts and SQL-defined metrics: Orb is the best fit. Metronome itself remains the incumbent for that profile, now inside Stripe, so the choice is between two enterprise invoice-based platforms.

If you want to keep your existing billing engine and add real-time entitlements and credits on top: Stigg is built for that. It orchestrates entitlements in real time while Stripe, Zuora, or Chargebee handles settlement.

If you want full code control and can operate the infrastructure: Lago is the right call. The open-source core is free to self-host, with paid cloud tiers when you want the platform managed.

If you are early-stage and want one no-code platform for usage plus credits: Flexprice covers that, with public pricing and a dashboard non-engineers can run.

Teams weighing alternatives to Metronome alongside Stripe itself often compare the broader Stripe alternatives for usage-based billing as well, since the two questions overlap once Metronome sits inside Stripe.

Bottom line

The choice among Metronome alternatives comes down to architecture. Invoice-based platforms (Orb, Lago) bill usage after the cycle closes; with real-time platforms (Credyt, Stigg), usage is authorized and billed as it happens; Flexprice sits between the two. For AI products with per-request costs, the timing of the bill is a margin decision, which is where real-time monetization changes the math relative to an invoice-based incumbent.

Frequently asked questions

Why did Stripe acquire Metronome?

Stripe announced the acquisition on December 2, 2025 and completed it on January 14, 2026, positioning Metronome as the enterprise usage-billing engine of the combined offering. Stripe Billing remains subscription-first; Metronome is invoice-based usage billing at enterprise scale. Stripe describes the two as an integration, not a consolidation.

Is Metronome a good fit for startups and small companies?

Metronome is documented as a mid-market to large-enterprise product, built for high-volume infrastructure and AI companies with dedicated billing-engineering and finance teams (Business Wire, November 2025). Smaller and non-enterprise teams usually evaluate alternatives with public pricing and self-serve onboarding, such as Credyt, Stigg, or Flexprice.

What is the difference between real-time and invoice-based billing?

Invoice-based billing meters usage throughout the period and reconciles it into an invoice at cycle end; with real-time billing, usage is authorized and billed as each event happens. The difference matters most for AI products, where per-request cost is real and waiting for the invoice means discovering an unprofitable customer after the money is spent.

Which Metronome alternatives publish public pricing?

Credyt, Stigg, and Flexprice publish pricing. Credyt is $1 per Monthly Active Wallet after the first 10 free each month; Stigg's Growth plan starts at $448 per month; Flexprice is $500 to $1,000 per month. Orb and Lago's cloud tiers require a sales conversation, as does Metronome (Orb, Lago pricing, accessed April 2026).

Which Metronome alternatives are open source?

Lago and Flexprice both ship an AGPLv3 open-source core that can be self-hosted. In both cases, several production features (customer portal, credit notes, dunning, tax integrations) sit in paid tiers, so a free self-hosted deployment is not feature-equivalent to the managed product. Credyt, Orb, Stigg, and Metronome are proprietary.

Can any of these alternatives block usage before a customer's balance runs out?

Yes, through per-usage authorization: the platform queries Credyt for the customer's real-time balance before the action and blocks the request if funds are insufficient. Credyt provides the balance state; the block decision belongs to the platform. Stigg enforces entitlement limits in real time before usage, though billing settles downstream. Orb, Lago, Flexprice, and Metronome are invoice-based or invoice-driven for usage charges, so they surface overages after the fact rather than blocking before the cost is incurred.