Letta vs Open WebUI

FeatureLettaOpen WebUI
CategoryAI Agent FrameworksChat Interfaces
PricingFree (open-source) + CloudFree (open-source)
GitHub Stars13,00065,000
PlatformsLinux, macOS, DockermacOS, Linux, Windows, Docker
Features
  • ✓ Long-term memory
  • ✓ Stateful agents
  • ✓ Tool use
  • ✓ Multi-model
  • ✓ Self-editing memory
  • ✓ Ollama integration
  • ✓ Multi-model
  • ✓ RAG
  • ✓ Web search
  • ✓ Voice input/output
  • ✓ Plugins
  • ✓ User management
Tags
memorystatefulagentsopen-source
open-sourcechatuiollamaself-hosted