Semantic Kernel vs Letta

FeatureSemantic KernelLetta
CategoryAI DevelopmentAI Agent Frameworks
PricingFree (open-source)Free (open-source) + Cloud
GitHub Stars22,00013,000
PlatformsLinux, macOS, WindowsLinux, macOS, Docker
Features
  • βœ“ Plugin system
  • βœ“ Memory
  • βœ“ Planner
  • βœ“ Multi-language
  • βœ“ Azure integration
  • βœ“ Long-term memory
  • βœ“ Stateful agents
  • βœ“ Tool use
  • βœ“ Multi-model
  • βœ“ Self-editing memory
Tags
microsoftsdkenterprisedotnet
memorystatefulagentsopen-source