Letta vs vLLM

FeatureLettavLLM
CategoryAI Agent FrameworksLocal AI Infrastructure
PricingFree (open-source) + CloudFree (open-source)
GitHub Stars13,00045,000
PlatformsLinux, macOS, DockerLinux
Features
  • ✓ Long-term memory
  • ✓ Stateful agents
  • ✓ Tool use
  • ✓ Multi-model
  • ✓ Self-editing memory
  • ✓ PagedAttention
  • ✓ Continuous batching
  • ✓ Tensor parallelism
  • ✓ OpenAI-compatible API
  • ✓ Multi-GPU
  • ✓ Quantization
Tags
memorystatefulagentsopen-source
open-sourceinferenceservinggpuhigh-throughput