Letta vs Anthropic MCP

FeatureLettaAnthropic MCP
CategoryAI Agent FrameworksAI Development
PricingFree (open-source) + CloudFree (open standard)
GitHub Stars13,00045,000
PlatformsLinux, macOS, DockermacOS, Linux, Windows
Features
  • ✓ Long-term memory
  • ✓ Stateful agents
  • ✓ Tool use
  • ✓ Multi-model
  • ✓ Self-editing memory
  • ✓ Universal tool protocol
  • ✓ Server/client architecture
  • ✓ Stdio and SSE transport
  • ✓ TypeScript + Python SDKs
  • ✓ Growing ecosystem
Tags
memorystatefulagentsopen-source
open-sourceprotocoltoolsintegrationstandard