LettavsDify

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

Dify

Automation Platforms

Open-source platform for building LLM applications visually

FeatureLettaDify
CategoryAI Agent FrameworksAutomation Platforms
PricingFree (open-source) + CloudFree + Cloud plans
GitHub Stars
13k
More stars
60k
PlatformsLinux, macOS, DockermacOS, Linux, Windows, Docker
Key Features
  • Long-term memory
  • Stateful agents
  • Tool use
  • Multi-model
  • Self-editing memory
  • Visual builder
  • RAG engine
  • Agent framework
  • Workflow orchestration
  • Multi-model
  • API-first
Pros
  • + Solves long-term memory problem
  • + Self-editing memory
  • + Stateful agents
  • + Multi-model support
  • + Active research backing
  • + Beautiful visual interface
  • + Built-in RAG pipeline
  • + Prompt engineering studio
  • + Self-hostable
  • + Multi-model support
Cons
  • Complex memory management
  • Performance overhead
  • Rebranding confusion
  • Still experimental
  • Newer platform, still maturing
  • Can be complex to self-host
  • Limited advanced customization
  • Cloud pricing can add up
Tags
memorystatefulagentsopen-source
open-sourcelow-coderagagentsenterprise

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