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15Five vs Insomnia: 2026 Comparison

15Five Insomnia
Overview A performance management platform with continuous feedback, OKRs, engagement surveys, and manager effectiveness tools. An open-source API client for REST, GraphQL, gRPC, and WebSocket with a clean interface and environment management.
Pricing Subscription ($4-$14/user/month) Freemium (Free-$12/user/month)
Key Features
  • Weekly check-ins
  • OKRs
  • Engagement surveys
  • Performance reviews
  • 1-on-1s
  • High fives recognition
  • Career development
  • Analytics
  • REST client
  • GraphQL support
  • gRPC support
  • Environment management
  • Plugin system
  • Code generation
  • Design and testing
  • Git sync
Pros
  • Continuous feedback model
  • Easy to use
  • Good engagement tools
  • Manager enablement
  • Open source option
  • Clean interface
  • Multi-protocol support
  • Good plugin system
Cons
  • Limited HRIS features
  • Can feel redundant with other tools
  • Basic reporting
  • Feature overlap with others
  • Smaller community than Postman
  • Fewer integrations
  • Kong acquisition concerns
  • Limited team features on free