Head to head
Flagsmith vs Statsig
As a feature flag API, Statsig rates higher on the APIbenchmarks Index, 86.3 to 79.1, a 7.2-point gap. Here is how they compare on each criterion.
Criterion by criterion
| Criterion | Flagsmith | Statsig |
|---|---|---|
| Documentation & DX | ||
| Reliability | ||
| Ecosystem & SDKs | ||
| Accessibility | ||
| APIbenchmarks Index | 79.1 | 86.3 |
Specifications
| Flagsmith | Statsig | |
|---|---|---|
| Best for | Open-source, self-hostable feature flags + remote config | Flags + experimentation + product analytics |
| Free tier | Free cloud: 50k requests/mo, 1 seat, unlimited flags (self-host fully free) | Free: unlimited flag checks + 2M metered events/mo, up to ~1M MTUs |
| Pricing | Per request (API calls) | Per metered event / MTU-based |
| Official SDKs | 12 languages | 12 languages |
Is Flagsmith better than Statsig?
On the APIbenchmarks Index, Statsig rates higher (86.3 vs 79.1). It leads on the four weighted criteria, but price is reported separately, so the best choice still depends on your budget.
Verdict in one line
Statsig leads by 7.2 points (86.3 vs 79.1) and wins 4 of 4 criteria.
Winner by criterion
| Criterion | Winner | ||
|---|---|---|---|
| Documentation & DX | 78 | 86 | |
| Reliability | 74 | 85 | |
| Ecosystem & SDKs | 80 | 85 | |
| Accessibility | 86 | 90 |
Choose Flagsmith if… / choose Statsig if…
- →your use case matches its focus: open-source, self-hostable feature flags + remote config
- →documentation & dx matters most to you (86 vs 78)
- →reliability matters most to you (85 vs 74)
- →ecosystem & sdks matters most to you (85 vs 80)
- →accessibility matters most to you (90 vs 86)
- →your use case matches its focus: flags + experimentation + product analytics
Pricing side by side
- Model
- Per request (API calls)
- Free tier
- Free cloud: 50k requests/mo, 1 seat, unlimited flags (self-host fully free)
- Free$0
- Start-Up$40-45/mo
- Scale-Up$250-300/mo
- EnterpriseCustom
- Open Source (self-hosted)Free
- Model
- Per metered event / MTU-based
- Free tier
- Free: unlimited flag checks + 2M metered events/mo, up to ~1M MTUs
- Developer (Free)$0/month
- Pro$150/month
- EnterpriseCustom
Vendor-published pricing, verified 2026-06-27 (Flagsmith) and 2026-06-27 (Statsig).
SDK and language coverage
Both · 7
JavaScriptReact / React NativePythonNode.jsPHPRubyGo
Only Flagsmith · 5
FlutterSwift/iOSKotlin/AndroidJava.NET / C#
Only Statsig · 5
Next.jsAngularJava / KotlinRust.NET (client & server)
Strengths and weaknesses
- +Fully open-source (BSD-3) core that can be self-hosted with no request limits or per-seat fees
- +Broad official SDK coverage: 15+ client- and server-side languages/platforms
- +Genuinely usable free SaaS tier (50k req/mo) plus low Start-Up pricing vs LaunchDarkly
- –No built-in experimentation stats engine; needs Amplitude/Mixpanel/Statsig to determine winners
- –Lacks advanced safety features like automated rollbacks and guardrail-metric monitoring
- –On-prem/private hosting and SCIM/LDAP gated behind custom-priced Enterprise tier
- +Feature-flag and dynamic-config checks are unlimited and free on every tier, you never pay per flag evaluation
- +No per-seat pricing: adding engineers or PMs doesn't change the bill
- +Generous free Developer tier (2M events, unlimited flag checks, 50k session replays, 1-yr retention)
- –Event-/experiment-based metered pricing can produce large surprise bills at high traffic once analytics, experiments or session replay are heavily used
- –No self-hosted / on-prem option, a blocker for strict data-sovereignty requirements
- –Proprietary statistical models are a 'black box', making it hard for data-science teams to validate p-value calculations or run custom frameworks
Flagsmith vs Statsig: questions
- Which has better documentation, Flagsmith or Statsig?
- Statsig scores higher on documentation and developer experience: 86 vs 78 out of 100.
- Which is more reliable, Flagsmith or Statsig?
- Statsig scores higher on reliability: 85 vs 74 out of 100.
- Do Flagsmith and Statsig have a free tier?
- Flagsmith: yes (Free cloud: 50k requests/mo, 1 seat, unlimited flags (self-host fully free)). Statsig: yes (Free: unlimited flag checks + 2M metered events/mo, up to ~1M MTUs).
- How are Flagsmith and Statsig priced?
- Flagsmith: Per request (API calls). Statsig: Per metered event / MTU-based.
- Which has more official SDKs?
- Both list 12 official SDKs.