Letta vs Perplexity

FeatureLettaPerplexity
CategoryAI Agent FrameworksAI Search
PricingFree (open-source) + CloudFree + Pro $20/mo
GitHub Stars13,000—
PlatformsLinux, macOS, DockerWeb, iOS, Android
Features
  • ✓ Long-term memory
  • ✓ Stateful agents
  • ✓ Tool use
  • ✓ Multi-model
  • ✓ Self-editing memory
  • ✓ Real-time search
  • ✓ Citations
  • ✓ Follow-up questions
  • ✓ File upload
  • ✓ API
  • ✓ Collections
Tags
memorystatefulagentsopen-source
searchresearchcitationswebapi