Compare 8 free feature flags tools, free tiers, and developer deals. We could not confirm today's terms for 3 of them, and on all 3 our own read did not confirm them. Each row says why. Nothing on record contradicts our terms for LaunchDarkly, Flagsmith, Statsig, Toggled.dev.
What this name holds: Flag and experiment services that switch behaviour without a deploy.
We track 8 feature flags services with a free tier we hold as current and 1 without. This category has been relatively stable — only 2 pricing changes recorded across all vendors.
| Vendor | Tier | Description | Read / catalogue date |
|---|---|---|---|
| LaunchDarkly | Developer | Feature management — $0 / mo, forever. Unlimited seats. A/B Tests and Experiments includes 100K experimentation MAU per month. 10M logs and 10M traces /mo. 5K session replays and 5K errors /mo. 5K AI runs/mo included. 1K client-side MAU /mo. | 2026-09-12 / 2026-07-23 |
| Flagsmith | Free | Feature flags and remote config — 50K API requests/month, unlimited flags/environments/identities, A/B testing, 1 user | 2026-09-24 / 2026-09-09 |
| Harness Feature Flags | Free | Feature flags (formerly Split.io) — 2 developers, 25K client MAU, unlimited flags and environments, CI/CD pipelines for rolloutOur read on 2026-09-25 found the page different from the terms we hold, and we hold no confirmation of the terms we publish. | 2026-09-25 / 2026-07-24 |
| GrowthBook | Starter / Open Source | Superseded: As of 2026-09-09, growthbook.io/pricing reads: Starter: Up to 3 users, unlimited feature flags, unlimited experiments, unlimited traffic. Open Source: No credit card required, 1 project, unlimited feature flags, unlimited experiments, unlimited traffic. We are not publishing our stored GrowthBook terms beside it — our own pricing change record, discovered 2026-09-09, names them as the previous ones. Read what we recorded ↓ | 2026-09-24 |
| Statsig | Free | 2M+ metered events/month free, unlimited feature flags at all tiers. Includes 50K session replays. Experimentation and analytics built in | 2026-09-24 |
| Abby | Free | Open-Source feature flags & A/B testing. Configuration as Code & Fully Typed Typescript SDKs. Strong integration with Frameworks such as Next.js & React. Free plan: 1,000 events/month, 3 feature flags/remote configs, 1 A/B test, 5 environments.When we last read the page we cite for this offer, on 2026-09-28, we refused the change we considered recording because it named no figure that had moved, and refusing a change is not a confirmation of the terms above, so we cannot confirm these terms today. | 2026-09-28 / 2026-07-04 |
| ConfigCat | Free | ConfigCat is a developer-centric feature flag service with unlimited team members (within 1 permission group). Forever Free plan: 10 feature flags, 2 environments, 2 products, 5M config JSON requests/mo, 20 GB network traffic/mo, 2 segments, 4 targeting rules/flag, 1 webhook, 7-day audit log retention.Our read on 2026-09-25 found the page different from the terms we hold, and we hold no confirmation of the terms we publish. | 2026-09-25 / 2026-08-27 |
| Hypertune | Free | Free: $0 / month, 1m CDN requests, 1m analytics events, Up to 3 team members, Unlimited CDN bandwidth and service connections, Unlimited MAUs / MTUs, Unlimited environments and projects, Unlimited feature flags and experiments. The service will shut down on 10th August 2026. | 2026-09-11 / 2026-07-05 |
| Toggled.dev | Free | Enterprise-ready, scalable multi-regional feature toggles management platform — FREE plan includes: Single project, Unlimited Clients, Up to 10 feature toggles per project, Up to 2 environments per project, 2 seats included, Data residency, Users segmentation, Session stickiness, Realtime notifications, Unlimited MAU, Role Based Access Control, Embedded analytics, Release Calendar (beta), Compatible with many client SDKs, Integrations with Slack & MS Teams, generic webhook and admin API, Amazing activation strategies!, Google & GitHub SSO, 2F authentication, Helpdesk | 2026-09-28 |
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