vioscale
Comparison

Flagsmith vs OpenFeature

No leader: the top candidate OpenFeature has only 0.10 confidence (low), below the 0.35 needed to declare a winner. The attribute-by-attribute breakdown below, with a source and date on every value, is the honest way to compare them.

Flagsmith full profile →OpenFeature full profile →
Machine formatsJSONMarkdownGraphQLor send Accept: application/json
Flagsmith58
OpenFeature64
Score
Vioscale score
Flagsmith58 / 100high · 77%
OpenFeature64 / 100low · 10%
Pricing
Free tier
Flagsmith✓
OpenFeature✓
Model
Flagsmithfreemium
OpenFeatureopen_source
Price level
Flagsmithmid
OpenFeaturefree
Transparent
Flagsmith✓
OpenFeature–
Integrations
Count
Flagsmith3
OpenFeature247
Security
Disclosure policy
Flagsmith–
OpenFeature✓
Fedramp
Flagsmith✓
OpenFeature–
Gdpr
Flagsmith✓
OpenFeature–
Hipaa
Flagsmith✓
OpenFeature–
Soc2
Flagsmith✓
OpenFeature–
Vulnerabilities
Reliability
Status page
Flagsmith✓
OpenFeature–
Adoption
Dependent repos
Flagsmith0
OpenFeature–
Github stars
Flagsmith6,530
OpenFeature–
Package downloads weekly
Flagsmith157,344
OpenFeature–
Activity
Commits last 30d
Flagsmith100
OpenFeature–
Release
Cadence days
Flagsmith1
OpenFeature–
History
Flagsmith20 items
OpenFeature–
License
Spdx
FlagsmithBSD-3-Clause
OpenFeature–
Language
Primary
FlagsmithPython
OpenFeature–
Market
Availability

Capabilities

Feature-by-feature on the axes that matter for feature flag software. “-” means undocumented, not absent.

Deployment
Hosting
FlagsmithCloud + self-hosted
OpenFeatureCloud + self-hosted
Rollout
Percentage rollout
Flagsmith✓
OpenFeature-
Attribute / segment targeting
Flagsmith✓
OpenFeature-
Evaluation
Local evaluation (no call home)
Flagsmith-
OpenFeature✓
Edge / CDN evaluation
Flagsmith✓
OpenFeature-
Experimentation
Built-in A/B experimentation
Flagsmith✓
OpenFeature-
Experiment stats engine
Flagsmith-
OpenFeature-
Standards
OpenFeature-compliant provider
Flagsmith✓
OpenFeature✓
Governance
Audit logs + change approvals
Flagsmith✓
OpenFeature-
Stale-flag / code reference detection
Flagsmith-
OpenFeature-
Coverage
SDK breadth
FlagsmithBroad
OpenFeatureBroad
Licensing
Self-hostable OSS core
Flagsmith✓
OpenFeature✓

What each one is

The product in its own terms, so the numbers below have context.

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.

Independently observed

OpenFeature

OpenFeature is an open source CNCF project providing a standardized API and SDK for feature flagging. It enables developers to switch between feature flag management tools or combine multiple solutions without code-level lock-in by implementing providers that adapt the common interface to different backends.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

Flagsmith

from $40/moSubscriptionFree tier14-day trial

Free tier available. Paid plans from $40–$300/month. Additional API calls and seats available. 14-day free trial on paid tiers.

  • FreeFree
    • Up to 50,000 requests/month
    • 1 team member
    • Unlimited feature flags
    • Unlimited environments
    • Unlimited identities and segments
    • +1 more
  • Start-Up$40/month (annual billing) or $45/month (monthly billing). 14-day free trial.
    • 1,000,000 requests/month
    • 3 team members
    • Unlimited projects
    • Email technical support
    • Scheduled flags
    • +3 more
  • Scale-Up$250/month (annual) or $300/month (monthly). Additional seats $50/seat/month. 14-day free trial.
    • 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
    • +1 more
  • EnterpriseContact sales
    • 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)
    • +4 more
as of verify ↗

OpenFeature

Open sourceFree tier
as of verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platforms
Web
Flagsmith✓
OpenFeature✗
Linux
Flagsmith✓
OpenFeature✗
CLI
Flagsmith✗
OpenFeature✓
Deployment
Cloud / SaaS
Flagsmith✓
OpenFeature✓
Self-hosted
Flagsmith✓
OpenFeature✓
Air-gapped
Flagsmith✓
OpenFeature✗

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

Flagsmith

3 total
  • Jira
  • Analytics platforms (for A/B testing)
  • OpenFeature standard
Independently observed

OpenFeature

22 total
  • ConfigCat
  • GO Feature Flag
  • DevCycle
  • Flipswitch
  • Kameleoon
  • Flagsmith
  • flagd
  • Datadog
  • LaunchDarkly
  • Mixpanel
  • Split
  • Confidence by Spotify
  • Flipt
  • Hyphen AI
  • GrowthBook
  • OFREP
  • Unleash
  • VWO
  • Bucketeer
  • CloudBees
  • AB Tasty
  • Vercel
Independently observed

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.