Letta vs Vercel AI SDK

FeatureLettaVercel AI SDK
CategoryAI Agent FrameworksAI Development
PricingFree (open-source) + CloudFree (open-source)
GitHub Stars13,00012,000
PlatformsLinux, macOS, DockerWeb
Features
  • ✓ Long-term memory
  • ✓ Stateful agents
  • ✓ Tool use
  • ✓ Multi-model
  • ✓ Self-editing memory
  • ✓ React hooks
  • ✓ Streaming
  • ✓ Multi-model
  • ✓ Tool calling
  • ✓ Structured output
  • ✓ Edge runtime
Tags
memorystatefulagentsopen-source
open-sourcetypescriptreactstreamingsdk