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15Five vs Seamless.ai: 2026 Comparison

15Five Seamless.ai
Overview A performance management platform with continuous feedback, OKRs, engagement surveys, and manager effectiveness tools. Seamless.ai is a real-time search engine for B2B sales leads that uses AI to find verified contact information. It helps sales teams build accurate lead lists with phone numbers and email addresses.
Pricing Subscription ($4-$14/user/month) Freemium ($0-147/user/mo)
Key Features
  • Weekly check-ins
  • OKRs
  • Engagement surveys
  • Performance reviews
  • 1-on-1s
  • High fives recognition
  • Career development
  • Analytics
  • Real-time contact search
  • email finder
  • phone numbers
  • Chrome extension
  • CRM integration
  • list building
  • buyer intent
Pros
  • Continuous feedback model
  • Easy to use
  • Good engagement tools
  • Manager enablement
  • Large database
  • Real-time verification
  • Good phone numbers
  • Easy to use
Cons
  • Limited HRIS features
  • Can feel redundant with other tools
  • Basic reporting
  • Feature overlap with others
  • Aggressive sales tactics
  • Data accuracy inconsistent
  • Pushy upselling