Flagsmith vs GrowthBook: pricing, quotas & features (2025)
Open-source feature flags + remote config — SaaS, private cloud, self-host
vs. Open-source feature flags + experimentation — Warehouse Native
Data sourced from vendor documentation · Last updated May 2026
Summary
Flagsmith and GrowthBook are both feature-flags platforms, addressing the same core use case with different implementation philosophies and trade-offs. Both offer a free tier, making it easy to prototype without a credit card. Both platforms start their paid tiers at $40/month. GrowthBook has a broader documented feature set (15 vs 14 features). The right choice depends on your existing stack, team experience, and feature requirements. All pricing and quota data below is sourced from Flagsmith and GrowthBook's official documentation — not generated by AI or estimated.
Flagsmith vs GrowthBook: Comparativa de precios, cuotas y características (2025)
En esta comparativa analizamos Flagsmith y GrowthBook lado a lado — incluyendo precios mensuales, límites del tier gratuito, características técnicas, cuotas de uso (almacenamiento, transferencia, usuarios activos mensuales) y los interfaces de desarrollo disponibles. Todos los datos proceden de la documentación oficial de cada proveedor, no de respuestas generadas por IA.
Flagsmith es una plataforma de la categoría feature-flags — Open-source feature flags + remote config — SaaS, private cloud, self-host. Ofrece 5 tiers de precio: Free gratuito, Self-hosted gratuito, Start-up desde $40/mes, Scale-up desde $200/mes. Su catálogo en Staxly documenta 14 características y 12 interfazes para desarrolladores.
GrowthBook pertenece a la categoría feature-flags — Open-source feature flags + experimentation — Warehouse Native. Ofrece 5 tiers de precio: Open Source (Self-Host) gratuito, Cloud — Starter (Free) gratuito, Cloud — Pro desde $40/mes, Cloud — Enterprise (personalizado). Su catálogo documenta 15 características y 14 interfazes para desarrolladores.
A continuación encontrarás los tiers de precio completos de ambas plataformas, una matriz de cuotas del tier gratuito (transferencia, almacenamiento, MAU, llamadas a la API y otros límites), el listado completo de características y los interfaces (CLI, SDKs, REST, GraphQL, MCP) disponibles para integrar cada servicio.
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Pricing tiers
Flagsmith
GrowthBook
Free-tier quotas head-to-head
Comparing free on Flagsmith vs oss on GrowthBook.
| Metric | Flagsmith | GrowthBook |
|---|---|---|
| No overlapping quota metrics for these tiers. | ||
Features
Flagsmith · 14 features
- A/B Testing — Multivariate flag splits.
- Audit Log — Full history of flag changes.
- Change Requests — Approval workflow for flag changes.
- Edge API — Global low-latency flag eval.
- Feature Flags — Boolean + multivariate + JSON flags.
- Local Evaluation — Server SDKs eval flags locally — no per-req API call.
- Percentage Rollouts — Gradual traffic ramp.
- Remote Config — Non-boolean config values.
- Role-Based Access — Fine-grained permissions.
- SSO + SAML — Enterprise SSO.
- Scheduled Flags — Time-based flag changes.
- Segments — Rule-based targeting.
- Self-Hosting — Docker/Helm install.
- Webhooks — Outbound event streaming.
GrowthBook · 15 features
- Approval Flows — Require reviewer approval on flag changes. Enterprise.
- Audit Logs — Full change history. Exportable on Enterprise.
- Dimensions & Slicing — Break down experiment results by user dimensions.
- Edge SDK Support — Cloudflare Workers, Lambda@Edge, Fastly, Akamai EdgeWorkers, Netlify Edge.
- Experiments — A/B/n with CUPED variance reduction + sequential testing.
- Feature Flags — Boolean + string + number + JSON flags with targeting.
- Feature Reviews (PR-style) — Draft → review → approve flag changes.
- Guardrail Metrics — Auto-monitor key metrics during experiments.
- Metric Catalog — Define + reuse metrics across experiments.
- Multi-Armed Bandits — Adaptive traffic allocation. Pro+.
- SSO / SAML — Enterprise SSO for cloud + self-host EE.
- Safe Rollouts — Guarded gradual rollouts with automatic rollback.
- Sticky Bucketing — User stays in variant even after eligibility changes.
- Visual A/B Test Editor — No-code DOM editor for web experiments. Pro+.
- Warehouse Native — Connect your warehouse + run experiments against your events data.
Developer interfaces
| Kind | Flagsmith | GrowthBook |
|---|---|---|
| CLI | Flagsmith CLI | — |
| SDK | flagsmith-android, flagsmith-go, flagsmith-ios, flagsmith-java, flagsmith-js (browser), flagsmith-nodejs, flagsmith-python, flagsmith-ruby | Edge SDKs (CF Workers / Lambda@Edge / Fastly / Akamai), growthbook-android, growthbook-flutter, growthbook-go, growthbook-java, growthbook-node, growthbook-php, growthbook-python, growthbook-ruby, growthbook-swift, sdk-javascript, sdk-react |
| REST | Flagsmith REST API | GrowthBook REST API |
| OTHER | Flagsmith Dashboard, Flagsmith Webhooks | Webhooks |
Key takeaways
- Both Flagsmith and GrowthBook offer a free tier — Flagsmith ("Free") and GrowthBook ("Open Source (Self-Host)") — with no credit card required to start.
- The entry-level paid plan is $40/month for Flagsmith (Start-up) vs. $40/month for GrowthBook (Cloud — Pro).
- GrowthBook has a broader documented feature set (15 features) vs. Flagsmith (14 features) in Staxly's catalog.
- Developer integrations differ: only Flagsmith offers CLI.
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