LlamaIndex vs Letta

FeatureLlamaIndexLetta
CategoryAI DevelopmentAI Agent Frameworks
PricingFree (open-source) + CloudFree (open-source) + Cloud
GitHub Stars38,00013,000
PlatformsLinux, macOS, WindowsLinux, macOS, Docker
Features
  • ✓ RAG pipelines
  • ✓ Data connectors
  • ✓ Indexing
  • ✓ Query engine
  • ✓ Agent tools
  • ✓ Long-term memory
  • ✓ Stateful agents
  • ✓ Tool use
  • ✓ Multi-model
  • ✓ Self-editing memory
Tags
ragdataindexingopen-source
memorystatefulagentsopen-source