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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

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Coding Assistants

Featured

AI-first code editor built on VS Code

FeatureLettaCursor
CategoryAI Agent FrameworksCoding Assistants
PricingFree (open-source) + CloudFree + $20/mo Pro
GitHub Stars
13k
More stars
50k
PlatformsLinux, macOS, DockermacOS, Linux, Windows
Key Features
  • Long-term memory
  • Stateful agents
  • Tool use
  • Multi-model
  • Self-editing memory
  • AI autocomplete
  • Chat
  • Codebase-aware
  • Multi-model
  • Tab completion
  • Composer agent
Pros
  • + Solves long-term memory problem
  • + Self-editing memory
  • + Stateful agents
  • + Multi-model support
  • + Active research backing
  • + Deep codebase understanding
  • + Built-in AI chat with file references
  • + Familiar VS Code interface
  • + Multi-model support (Claude, GPT-4, etc.)
  • + Fast tab completion
Cons
  • Complex memory management
  • Performance overhead
  • Rebranding confusion
  • Still experimental
  • $20/mo for Pro plan
  • Fork of VS Code (may lag behind updates)
  • Can be resource-intensive
  • Learning curve for AI features
Tags
memorystatefulagentsopen-source
codingeditoridevscodeai-first

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