LM StudiovsLetta

Full side-by-side comparison — features, pricing, platforms, and which one wins in 2026.

LM Studio

Local AI Infrastructure

Beautiful desktop app for running local LLMs

Full review →Website ↗

Letta

AI Agent Frameworks

Build stateful AI agents with long-term memory

Full review →Website ↗
FeatureLM StudioLetta
CategoryLocal AI InfrastructureAI Agent Frameworks
PricingFreeFree (open-source) + Cloud
GitHub Stars—
✓ More stars
13k
PlatformsmacOS, Linux, WindowsLinux, macOS, Docker
Key Features
  • ✓ Model discovery
  • ✓ One-click download
  • ✓ Chat UI
  • ✓ OpenAI-compatible API
  • ✓ GPU acceleration
  • ✓ GGUF support
  • ✓ Long-term memory
  • ✓ Stateful agents
  • ✓ Tool use
  • ✓ Multi-model
  • ✓ Self-editing memory
Pros
  • + Beautiful desktop UI
  • + One-click model downloads
  • + OpenAI-compatible local server
  • + Automatic GPU optimization
  • + Great for beginners
  • + Solves long-term memory problem
  • + Self-editing memory
  • + Stateful agents
  • + Multi-model support
  • + Active research backing
Cons
  • − macOS/Windows only (no Linux GUI)
  • − Closed-source
  • − Limited advanced configuration
  • − Slower than Ollama for API use
  • − Complex memory management
  • − Performance overhead
  • − Rebranding confusion
  • − Still experimental
Tags
localllmdesktopinferenceprivacy
memorystatefulagentsopen-source

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