LettavsGradio

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

Letta

AI Agent Frameworks

Build stateful AI agents with long-term memory

Full review →Website ↗

Gradio

Developer Tools

Build and share machine learning demos easily

Full review →Website ↗
FeatureLettaGradio
CategoryAI Agent FrameworksDeveloper Tools
PricingFree (open-source) + CloudFree (open-source)
GitHub Stars
13k
✓ More stars
35k
PlatformsLinux, macOS, DockerLinux, macOS, Windows, Web
Key Features
  • ✓ Long-term memory
  • ✓ Stateful agents
  • ✓ Tool use
  • ✓ Multi-model
  • ✓ Self-editing memory
  • ✓ ML demos
  • ✓ API generation
  • ✓ Sharing
  • ✓ Custom components
  • ✓ Hugging Face integration
Pros
  • + Solves long-term memory problem
  • + Self-editing memory
  • + Stateful agents
  • + Multi-model support
  • + Active research backing
  • + Easiest ML demo creation
  • + Auto-generated UI
  • + Hugging Face integration
  • + API generation
  • + One-line sharing
Cons
  • − Complex memory management
  • − Performance overhead
  • − Rebranding confusion
  • − Still experimental
  • − Limited UI customization
  • − Not for complex apps
  • − Can be slow with large models
  • − Basic styling options
Tags
memorystatefulagentsopen-source
mldemopythonopen-source

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