Letta vs Weaviate

FeatureLettaWeaviate
CategoryAI Agent FrameworksData Tools
PricingFree (open-source) + CloudFree (open-source) + Cloud
GitHub Stars13,00012,000
PlatformsLinux, macOS, DockerLinux, Docker, Web
Features
  • ✓ Long-term memory
  • ✓ Stateful agents
  • ✓ Tool use
  • ✓ Multi-model
  • ✓ Self-editing memory
  • ✓ Vector search
  • ✓ Hybrid search
  • ✓ AI modules
  • ✓ GraphQL
  • ✓ Multi-tenancy
Tags
memorystatefulagentsopen-source
vector-dbsearchgraphqlopen-source