Flagsmith
A feature flag management platform that enables safe, controlled software releases across applications
- Vendor
- Bullet Train Limited
- Also known as
- flagsmith
Available worldwide
What is Flagsmith?
An open-source platform for managing feature flags and remote configuration across web, mobile, and server-side applications. Enables controlled rollouts, A/B testing, and runtime configuration changes without code deployment.
Flagsmith pricing
Plans, per-tier features and add-ons, dated and linked to live pricing. Pricing changes often; always verify at source before you rely on it.
Free tier available. Paid plans from $40–$300/month. Additional API calls and seats available. 14-day free trial on paid tiers.
Free
FreeIndividual developers building on their own
- team_members
- 1
- requests_per_month
- 50,000
- Up to 50,000 requests/month
- 1 team member
- Unlimited feature flags
- Unlimited environments
- Unlimited identities and segments
- API access
Start-Up
Small teams starting with feature flags
- team_members
- 3
- requests_per_month
- 1,000,000
- 1,000,000 requests/month
- 3 team members
- Unlimited projects
- Email technical support
- Scheduled flags
- Two-factor authentication
- A/B and multivariate testing
- 3rd party integrations
Scale-Up
Growing teams expanding their feature flag usage
- team_members
- 5–20
- requests_per_month
- 5,000,000+
- 5,000,000+ requests/month
- 5 team members included (up to 20 available)
- SAML and SSO authentication
- Governance: roles, permissions, change requests, audit logs
- Priority email and chat support
- All Start-Up features
Enterprise
Contact salesMaximum security, control, and custom deployment options
- team_members
- 20+
- requests_per_month
- 5,000,000+
- 5,000,000+ requests/month
- 20+ team members
- Tailored hosting: cloud, private cloud, self-hosted, or air-gapped
- Priority real-time chat support with optional Slack integration
- LDAP and SCIM support (coming soon)
- Data-driven releases (coming soon)
- On-boarding and training
- Enterprise SLA
- All Scale-Up features
Add-ons
- API request overages$50 per 1000000 requests
What Flagsmith does
The capabilities that matter for feature flag software, normalised so it lines up with every alternative. “-” means we haven't confirmed it, not that it's missing.
- Hosting
- Cloud + self-hosted
- Percentage rollout
- ✓
- Attribute / segment targeting
- ✓
- Local evaluation (no call home)
- -
- Edge / CDN evaluation
- ✓
- Built-in A/B experimentation
- ✓
- Experiment stats engine
- -
- OpenFeature-compliant provider
- ✓
- Audit logs + change approvals
- ✓
- Stale-flag / code reference detection
- ✓
- SDK breadth
- Broad
- Self-hostable OSS core
- ✓
Platform & deployment
Independently observed- CLI
- Web
- Cloud / SaaS
- On-premise
- Self-hosted
Integrations (7)
Independently observed- Jira
- Analytics platforms (for A/B testing)
- OpenFeature standard
- GitHub•
- GitLab•
- Sentry•
- Datadog•
Security & compliance
Known vulnerabilities: 0 (0 in the last 12 months) sourcea count reflects scale & disclosure, not quality
Flagsmith FAQ
Common questions about Flagsmith, answered from independent, dated evidence.
What is Flagsmith?
A feature flag management platform enabling teams to toggle features on/off for specific users, segments, or environments without redeploying. Supports A/B testing, remote configuration, and deployment across cloud, private cloud, or on-premise infrastructure. It is indexed under Feature Flag Software.
Is Flagsmith free to use?
Flagsmith is open source, so it can be self-hosted and used at no licence cost. It is released under the BSD-3-Clause licence. A commercial or hosted edition starts at $40 per month. Prices are published openly on the vendor's own pricing page. Pricing changes often, so verify at source before relying on it.
What platforms does Flagsmith support?
Flagsmith supports the web and Linux. Platforms we have not confirmed are simply not listed here rather than ruled out.
Can Flagsmith be self-hosted?
Yes. Flagsmith can be deployed cloud / SaaS, air-gapped and self-hosted, so it does not have to run on the vendor's infrastructure.
What does Flagsmith integrate with?
We have confirmed 3 integrations for Flagsmith, including Jira, Analytics platforms (for A/B testing) and OpenFeature standard. This is what we could verify from public sources, so the vendor may support others we have not indexed.
What security certifications does Flagsmith have?
We have independently confirmed SOC 2, HIPAA and GDPR for Flagsmith. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as Flagsmith not holding them. Always confirm compliance directly before you rely on it.
Source: https://trust.flagsmith.com
Is Flagsmith open source?
Yes. Flagsmith is published under the BSD-3-Clause licence, a permissive licence that generally allows commercial use and modification. Licence terms can change between releases, so verify against the repository for the version you intend to use.
Where is Flagsmith available?
Flagsmith is available worldwide. The vendor is headquartered in the United Kingdom.
Flagsmith alternatives
Other feature flag software we track, ranked by the same independent score.
- StatsigManage feature releases and run experiments with analytics to guide product decisionsmedium · 74%
- LaunchDarklyA platform for managing feature flags and controlling software behavior in real time, enabling safe releases and continuous optimizationhigh · 75%
- GrowthBookWarehouse-native experimentation and feature management platformhigh · 75%
- ConfigCatA hosted service for managing feature flags and their availability across applicationsmedium · 73%
- UnleashEnterprise-grade feature flag management systemhigh · 75%
- HypertuneFeature experiments and configuration management platform for JavaScript applicationsmedium · 68%
Compare Flagsmith
Side by side against other feature flag software, attribute by attribute, with a source on every value.
The vioscaleAI score: one lens on the evidence
Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for Flagsmith, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Package downloads | 68 | 0.14 | 9.2 | ✓ |
| Reliability | 50 | 0.16 | 7.9 | ✓ |
| Security posture | 55 | 0.12 | 6.3 | ✓ |
| Development activity | 63 | 0.09 | 5.9 | ✓ |
| Capabilities | 92 | 0.06 | 5.8 | ✓ |
| Release cadence | 99 | 0.05 | 5.2 | ✓ |
| Price level | 80 | 0.04 | 3.4 | ✓ |
| Pricing transparency | 45 | 0.06 | 2.8 | ✓ |
| Stars | 72 | 0.03 | 1.9 | ✓ |
| Integrations | 22 | 0.08 | 1.9 | ✓ |
| Dependent projects | 0 | 0.06 | 0.0 | ✓ |
| Security score | 0 | 0.04 | 0.0 | - |
| Developer Q&A activity | 0 | 0.06 | 0.0 | - |
Computed . Re-weight it by intent, or see the full method.
All data & sourcesshow ↓
Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.
Activity
| Attribute | Value | Evidence |
|---|---|---|
| Commits last 30d | 100 | mediumsource · 2026-09-10 · 65% |
Adoption
Content
| Attribute | Value | Evidence |
|---|---|---|
| Faq | 8 items | mediumsource · 2026-09-10 · 68% |
Features
| Attribute | Value | Evidence |
|---|---|---|
| Capabilities | Hosting: both · Open source: Yes · Openfeature: Yes · Sdk breadth: broad · Audit approvals: Yes · Code references: Yes | mediumsource · 2026-09-14 · 60% |
Integrations
| Attribute | Value | Evidence |
|---|---|---|
| Count | 5 | mediumsource · 2026-09-14 · 60% |
Language
| Attribute | Value | Evidence |
|---|---|---|
| Primary | Python | highsource · 2026-09-10 · 90% |
License
| Attribute | Value | Evidence |
|---|---|---|
| Spdx | BSD-3-Clause | highsource · 2026-09-10 · 99% |
Market
| Attribute | Value | Evidence |
|---|---|---|
| Availability | HqCountry: GB · PrimaryMarkets: … · AvailabilityScope: global · AvailableCountries: … · NotAvailableCountries: … | highsource · 2026-09-14 · 75% |
Pricing
Release
Reliability
| Attribute | Value | Evidence |
|---|---|---|
| Status page | Yes | mediumsource · 2026-08-05 · 60% |
Security
| Attribute | Value | Evidence |
|---|---|---|
| Fedramp | Yes | highsource · 2026-08-05 · 75% |
| Gdpr | Yes | highsource · 2026-08-14 · 75% |
| Hipaa | Yes | highsource · 2026-08-05 · 75% |
| Soc2 | Yes | highsource · 2026-08-05 · 75% |
| Vulnerabilities | Count: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=go&package_name=github.com%2Fflagsmith%2Fflagsmith&per_page=100 · Last 12m: 0 | highsource · 2026-08-26 · 90% |
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