feature-flags
Flagsmith
Open-source feature flags + remote config — SaaS, private cloud, self-host
OSS feature flag platform. Fair-source license. SaaS hosted, private cloud, or full self-host. Flags + remote config + segments + A/B. 25+ SDKs.
Pricing
| Tier | Price | Notes |
|---|---|---|
| Free | Free | $0. 50,000 API requests/mo. 1 team member. Unlimited flags. Community support. |
| Self-hosted | Free | $0 (OSS). Host yourself via Docker/K8s. Fair-source license (non-compete). |
| Start-up | $40/mo | $40/mo. 1,000,000 API requests/mo. 3 team members. Standard support. |
| Scale-up | $200/mo | $200/mo. 5,000,000 API requests. 10 team members. Priority support + SLA. |
| Enterprise | Custom | Custom. Unlimited API requests, SSO, SAML, RBAC, audit logs, on-prem. |
Limits
| Tier | Metric | Value | Notes |
|---|---|---|---|
| — | deployment modes | SaaS, private cloud, full self-host (Docker + Postgres) | Deploy options |
| — | edge api | Global edge API for low-latency flag evaluation | Edge API |
| — | flag types | Boolean, string, int, JSON — all from same flag | Flag types |
| — | identities | Per-user flag overrides via identity + traits | Identities |
| — | license | Fair-source (Business Source License-like) — self-host free unless competing service | License |
| — | remote config | Not just flags — full remote config values | Remote config |
| — | sdk count | 25+ SDKs (server + client side) | SDK count |
| — | segments | Rule-based user segmentation | Segments |
| — | vs growthbook | Similar OSS positioning; GrowthBook more experimentation-focused, Flagsmith more flag-centric | GrowthBook comparison |
| — | vs launchdarkly | OSS + cheaper + self-host option vs LD's closed source and enterprise pricing | LD comparison |
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.
- Scheduled Flags — Time-based flag changes.
- Segments — Rule-based targeting.
- Self-Hosting — Docker/Helm install.
- SSO + SAML — Enterprise SSO.
- Webhooks — Outbound event streaming.
Developer interfaces
| Slug | Name | Kind | Version |
|---|---|---|---|
| sdk-android | flagsmith-android | sdk | 1.x |
| cli | Flagsmith CLI | cli | 0.x |
| dashboard | Flagsmith Dashboard | other | — |
| sdk-go | flagsmith-go | sdk | 4.x |
| sdk-ios | flagsmith-ios | sdk | 3.x |
| sdk-java | flagsmith-java | sdk | 7.x |
| sdk-js | flagsmith-js (browser) | sdk | 8.x |
| sdk-node | flagsmith-nodejs | sdk | 3.x |
| sdk-python | flagsmith-python | sdk | 3.x |
| rest-api | Flagsmith REST API | rest | v1 |
| sdk-ruby | flagsmith-ruby | sdk | 3.x |
| webhooks | Flagsmith Webhooks | other | — |
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