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About Flagsmith
What is Flagsmith?
Flagsmith is an open-source feature flag and remote configuration platform. It enables engineering teams to manage feature toggles across web, mobile, and server-side applications without deploying new code. Developers wrap sections of code with a flag and control rollout from the Flagsmith dashboard.
What problem does it solve?
Flagsmith solves the risk of deploying incomplete features, the complexity of managing toggles across multiple environments, and the need for safe, gradual rollouts. It replaces in-house toggle systems with a unified, scalable solution for canary deployments, A/B testing, and remote app changes.
Who is it for?
Flagsmith is built for software developers, engineering leaders, and teams practicing continuous delivery. It suits SaaS companies, fintech, banking, and any organization needing fine-grained control over feature releases. It is less suited for marketers without engineering support or teams requiring a no-code feature management interface.
Real use cases
Teams use Flagsmith for canary deployments (rolling out to 1% of users first), A/B testing button colors or checkout flows, and remote config to alter themes or payment options without app store approval. It also supports role-based access and change control for enterprise compliance.
Key features
- Feature Flags & Remote Config — Toggle features or customize values in real time without code changes.
- Segmentation & Percentage Rollouts — Target individual users, segments, or a percentage for canary or phased releases.
- A/B & Multivariate Testing — Split traffic across multiple flag variations and send data to your analytics stack.
- Role-Based Access & Change Control — Manage permissions, audit logs, and approval workflows for enterprise compliance.
- Edge API & Real-Time Flags — Low-latency flag delivery optimized across global regions.
- SDKs & Integrations — Supports popular languages (REST, Python, JS, etc.) and third-party tool connections.
- Cloud, Private Cloud, or On-Prem — Flexible deployment including self-hosted options for privacy-conscious teams.
SaaSpartout Score
7.6
/10
Editorial score from our review methodology — not user ratings.
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Flagsmith Pricing
Flagsmith pricing: Free–Enterprise. Billing model: Free.
For comparison: the median starting price in Developer Tools is $19.99/month, measured across 301 tools we track. See the full SaaS Pricing Index →
Free
$0/mo – Up to 50,000 requests/mo, 1 team member, 1 project, unlimited feature flags & environments, email support.
Start-Up
Starts after 14-day free trial – Up to 1,000,000 requests/mo, 5 team members, unlimited projects, email & chat support.
Scale-Up
Starts after 14-day free trial – Up to 5,000,000+ requests/mo, 20 team members, unlimited projects, priority support, SAML, advanced audit logs.
Enterprise
Contact Sales – 5,000,000+ requests/mo, 20+ team members, unlimited everything, on-prem installation, dedicated support, advanced security (SAML, Okta, ADFS, LDAP).
All plans include unlimited feature flags, environments, identities, and segments. Overage charges apply beyond plan limits.
Frequently asked questions
Is Flagsmith free to use?
Yes. Flagsmith offers a free plan with up to 50,000 requests/month, 1 team member, and 1 project. Paid plans start with a 14-day free trial.
How much does Flagsmith cost?
Flagsmith’s pricing starts free and goes up to custom Enterprise plans. Scale-Up plans begin above Free/Start-Up tiers with pricing available on request. Contact sales for exact Enterprise pricing.
Who is Flagsmith best for?
Flagsmith is best for development teams practicing continuous delivery, especially at SaaS, fintech, and enterprise organizations needing safe, gradual rollouts and remote config.
What are the top alternatives to Flagsmith?
Top alternatives include LaunchDarkly, Split.io, Unleash, and Harness Feature Flags. Flagsmith’s key differentiator is its open-source core and flexible self-hosting option.
Does Flagsmith support A/B testing?
Yes. Flagsmith supports multivariate flags with percentage splits across variations. You can integrate flag data with your analytics platform for detailed experimentation.
