Flexprice vs Stigg
Flexprice is an open-source monetization platform (AGPLv3 core, cloud tiers from $500/month) designed as a full billing replacement for SaaS and AI companies. It offers real-time event metering, a wallet credit system, and a no-code pricing dashboard. Stigg is a SaaS entitlement orchestration layer that handles plan management, feature gating, and pricing experiments, sitting above an existing billing system (Stripe, Zuora, or Chargebee) rather than replacing it. The fundamental difference is scope: Flexprice is a billing platform that collects money; Stigg is a pricing and entitlement layer that routes to the billing platform you already have. At the canonical scenario (100 customers, $2K MRR, 100K events, 5 seats), Flexprice costs $500/month (Starter) and Stigg costs approximately $448/month (Growth plan).
Choose if...
- →Startups and growth-stage teams adopting usage-based or credit-based pricing who need transparent, predictable flat-fee pricing
- →Teams that want open-source code transparency and the option to self-host without vendor lock-in
- →Product and growth teams that need to run pricing experiments without engineering changes for each update
- →AI and SaaS companies in the US or India market that want multi-PSP support including Razorpay and Stripe
- →Teams already on Stripe, Zuora, or Chargebee that want entitlement management without replacing their billing stack
- →Product and growth teams that need to iterate on pricing tiers without engineering changes for each update
- →SaaS products with complex feature access rules, seat limits, and usage quotas across multiple tiers
- →Companies needing credit-based monetization layered over an existing subscription billing system
Feature comparison
| Dimension | Flexprice | Stigg |
|---|---|---|
| Billing model | Hybrid | Subscription + usage |
| Usage authorization | Post-usage No pre-authorization gate is documented. Balance monitoring uses low-balance alerts rather than per-event wallet authorization before work runs. | Pre-usage Stigg's entitlement API gates feature access in real time before usage occurs, but actual billing is post-consumption via the connected billing system (Stripe, Zuora, Chargebee). |
| Wallet architecture | First-class primitive Wallets are documented as core infrastructure with a full lifecycle: create, top-up, auto-recharge, debit, and low-balance alerts. However, automatic usage-based debit from usage events is invoice-driven (debited via INVOICE_PAYMENT transaction), not triggered on individual event ingestion. Manual API debit is synchronous and immediate. | Add-on Credits and wallet primitives are well-developed with stacked grants, per-grant priority, expiry dates, and explicit drawdown order; billing of wallet top-ups runs through the connected downstream system. |
| Multi-asset support | USD-with-labels | USD-with-labels Multiple named credit types per customer with custom consumption formulas; synced to downstream billing as monetary credits. |
| Payment processing | Integrated Requires a PSP account setup. Supported PSPs: Stripe, Razorpay, Paddle, and Chargebee. Not fully open to arbitrary PSPs. | Not applicable Stigg does not process payments. Collection is handled by the connected billing system (Stripe, Zuora, Chargebee, AWS Marketplace, Apple App Store). |
| PSP agnostic | Partial | Not applicable |
| Customer portal | Drop-in Pre-built portal URL, embeddable via iframe and generated via an API token. The portal is read-only for customers — they can view balances, invoices, and usage analytics but cannot initiate payments or self-service top-ups. | Drop-in Customer portal is embed-only via React, JavaScript, and Vue widgets; no hosted redirect-style billing page with a branded URL is available. |
| Auto top-up | Platform-configured Merchants set the top-up threshold and amount; end customers have no self-service threshold control in the documented feature set. | Platform-configured |
| Open source | Partial The AGPLv3 core covers metering, invoicing, and credit systems. Advanced features (real-time prepaid credit balance, recurring wallet top-ups, entitlement management, revenue analytics) are available on paid cloud tiers. | No |
| Enterprise contracts | Basic | Basic Enterprise contracts and invoicing are managed by the connected downstream billing system. Stigg's Scale plan includes custom MSA, SAML SSO, and dedicated account management. |
Pricing comparison
- Model
- Flat monthly fee by event volume tier; no revenue percentage
- Free tier
- Yes
- Starting price
- $500/month (Starter, billed monthly; $400/month billed annually)
- Model
- Per subscription + per seat + per event data; contract minimum applies on Growth
- Free tier
- Yes
- Starting price
- $448/month billed annually (Growth plan)
Canonical scenario — 100 customers, $2K MRR, 100K events, 5 seats
| Line item | Flexprice | Stigg |
|---|---|---|
| Platform fee | $500 (Starter tier, billed monthly; $400/month billed annually) | $0 |
| Per customer | $0 | $32 (100 × $0.32 self-service subscription rate, after Growth discount) |
| Seat fees | $0 | $160 (5 × $32/month) |
| Event fees | $0 | ~$0 (100K events well below the $448/month plan floor) |
| Revenue % | $0 | $0 |
| Payment processing | Pass-through | Not applicable |
| Total / month | $500 (Starter); $1,000 (Premium, if advanced credit features required) | $448 effective (Growth plan $448/month minimum applies; computed per-unit cost for this scenario is ~$192) |
Flexprice: The canonical scenario (100K events/month) fits within both the Starter and Premium event limits (10M and 25M respectively). The Starter tier ($500/month) covers core billing, usage metering, wallets, and customer portal. Flexprice does not publicly confirm whether real-time prepaid credit balance, recurring wallet top-ups, and entitlement management require the Premium tier ($1,000/month); if so, effective comparison cost is $1,000/month. Annual billing reduces these by 20%. Payment processing fees are charged by the connected PSP at pass-through rates. The open-source self-hosted version is excluded as it does not include wallet and credit features needed for a like-for-like comparison.
Stigg: Computed per-unit costs for this scenario total ~$192 ($32 per-customer × 100 + $160 seats), but the Growth plan has a $448/month contract minimum billed annually, making $448 the effective monthly cost at this scale. Enterprise subscription rate ($0.47/sub after discount) would increase per-customer costs if subscriptions are classified as enterprise. Scale plan requires custom pricing. Payment processing fees are charged by the connected billing system, not Stigg.
Flexprice: strengths and limitations
- +Published, transparent flat-fee pricing starting at $500/month with no revenue percentage and a free tier for evaluation
- +Wallet system with full lifecycle documentation — create, top-up, auto-recharge, debit, and low-balance alerts — positioned as core infrastructure
- +No-code pricing management dashboard lets non-engineers modify pricing without code deployments or engineering tickets
- +AGPLv3 open-source core with self-hosting on Docker Compose or AWS ECS/EKS; 3,600+ GitHub stars and active development (v2.1.3, April 2026)
- +ClickHouse-backed real-time event metering for high-volume analytics with flexible deployment options
- +Multiple PSP integrations — Stripe, Razorpay, Paddle, and Chargebee — suits teams in US and India markets
- −Automatic wallet debit from usage events is invoice-driven (INVOICE_PAYMENT transaction), not triggered atomically on each event ingestion
- −No pre-usage authorization primitive — the platform monitors balance via low-balance alerts but cannot gate individual events before they run
- −Customer portal is read-only — end customers can view balances and invoices but cannot initiate payments or self-service top-ups
- −Auto top-up is merchant-controlled — end customers cannot set their own top-up threshold or amount via self-service
- −PSP selection is limited to Stripe, Razorpay, Paddle, and Chargebee; no bring-your-own PSP model is documented
- −Early-stage company (founded 2023) with limited publicly named enterprise customers; track record is thinner than more established billing platforms
Stigg: strengths and limitations
- +Typed entitlement primitive with documented P95 latency under 100ms for real-time feature access checks
- +Credits suite with stacked grants, per-grant priority, expiry dates, custom consumption formulas, and explicit drawdown order
- +No-code pricing console lets product teams change entitlements, plans, and feature access without engineering tickets
- +PSP-agnostic orchestration connects to Stripe, Zuora, Chargebee, AWS Marketplace, and Apple App Store
- +Broad SDK coverage: Node, Python, Go, Ruby, Java, gRPC sidecar, plus React, JavaScript, and Vue UI components
- +Named enterprise customers including Webflow, Miro, Cloudinary, New Relic, PagerDuty, Upwork, and AI21
- −No hosted redirect-style billing portal; customer portal requires embedding React or JavaScript widgets in the host app
- −No profitability analytics — usage reporting does not ingest vendor costs for per-customer margin analysis
- −Growth plan carries a $448/month contract minimum regardless of actual per-unit usage volume
- −Sandbox tier is non-production only; production requires Growth or Scale
- −Production integrations can take weeks to months for complex configurations due to the platform's modeling overhead
- −Integration catalog depth varies — Chargebee is less thoroughly documented than Stripe and Zuora
Which one should you pick?
Choose Flexprice if you need a full billing platform (usage metering, wallet credits, invoicing, and PSP-connected payment collection in one system) and want open-source code transparency or self-hosting as part of that. Flexprice's $500/month Starter tier with published pricing is also accessible for teams that cannot commit to Stigg's $448/month growth minimum without knowing what they're getting. Flexprice is the stronger choice for teams that have not yet chosen a billing platform and want to avoid running two separate systems.
Choose Stigg if you already have Stripe Billing, Zuora, or Chargebee in production and want to add sophisticated entitlement management without migrating your payment collection stack. Stigg covers plan versioning, feature flags, no-code pricing configuration, and pricing experiment tooling. Its entitlement graph, typed entitlement API with documented P95 latency under 100ms, and no-code pricing console for non-engineers are capabilities that Flexprice does not provide. The $448/month Growth plan minimum applies to Stigg's production tier.
For teams that need both entitlement orchestration and billing infrastructure, these platforms are not direct alternatives. Stigg adds the entitlement layer to an existing billing system; Flexprice replaces the billing system but does not provide the same depth of plan and entitlement management. The overlap is primarily in the credit and wallet experience: both ship wallet credit systems, but Stigg's operates through a connected billing system while Flexprice handles money movement directly.