The Front Desk Review

Best Feature Flags · head-to-head

Flagsmith vs GrowthBook

A sourced, side-by-side comparison for feature flags. Flagsmith has the lower entry price. Every figure links to the public page it was captured from — the vendor's own wherever the vendor publishes the number, otherwise the named public source — with the date we captured it.

Flagsmith has the lower entry price — Flagsmith starts at $0/mo, GrowthBook at $0/mo. Free tier: Flagsmith Yes, GrowthBook Yes. HIPAA: Flagsmith —, GrowthBook Yes.

As of 2026-09-02 · figures link to their source below

Side by side

Flagsmith

$0/mo entry
Entry price$0/mo (Free)
Free tierYes
HIPAA (BAA)—
SOC 2Yes
GDPRYes
Best forTeams wanting open-source self-hosted control

GrowthBook

$0/mo entry
Entry price$0/mo (Starter)
Free tierYes
HIPAA (BAA)Yes
SOC 2Yes
GDPRYes
Best forData teams wanting warehouse-native experimentation without vendor data access

Sources — Flagsmith: flagsmith.com (verified 2026-09-02) · GrowthBook: growthbook.io (verified 2026-09-02)

Key features

Flagsmith: Open-source self-hosted option (full feature parity); OpenFeature provider support for vendor-agnostic evaluation; Multi-variate flags with A/B and MVT testing built in; Scheduled flag changes on paid plans

GrowthBook: Warehouse-native architecture — aggregate data only, no PII ever leaves customer's data warehouse; Advanced statistics: CUPED variance reduction, sequential testing, multi-arm bandits; Visual A/B test editor (no-code experiment creation); Open-source self-hosted option with full feature parity; SOC 2 Type II + ISO 27001 certified

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