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15Five vs Flagsmith: 2026 Comparison

15Five Flagsmith
Overview A performance management platform with continuous feedback, OKRs, engagement surveys, and manager effectiveness tools. An open-source feature flag and remote config service with A/B testing and analytics for managing feature releases.
Pricing Subscription ($4-$14/user/month) Freemium (Free-$45/seat/month)
Key Features
  • Weekly check-ins
  • OKRs
  • Engagement surveys
  • Performance reviews
  • 1-on-1s
  • High fives recognition
  • Career development
  • Analytics
  • Feature flags
  • Remote config
  • A/B testing
  • Segments
  • Audit logs
  • Open source
  • Self-hosted
  • Analytics
Pros
  • Continuous feedback model
  • Easy to use
  • Good engagement tools
  • Manager enablement
  • Open source
  • Self-hosted option
  • Affordable
  • Good feature set
Cons
  • Limited HRIS features
  • Can feel redundant with other tools
  • Basic reporting
  • Feature overlap with others
  • Smaller community
  • Fewer SDKs
  • Limited A/B testing
  • Newer platform