Ollama Web UIvsLetta

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

Ollama Web UI

Chat Interfaces

ChatGPT-style interface for Ollama models

Full review →Website ↗

Letta

AI Agent Frameworks

Build stateful AI agents with long-term memory

Full review →Website ↗
FeatureOllama Web UILetta
CategoryChat InterfacesAI Agent Frameworks
PricingFree (open-source)Free (open-source) + Cloud
GitHub Stars
✓ More stars
55k
13k
PlatformsLinux, macOS, DockerLinux, macOS, Docker
Key Features
  • ✓ Chat UI
  • ✓ RAG
  • ✓ Multi-model
  • ✓ Plugins
  • ✓ Voice input
  • ✓ Long-term memory
  • ✓ Stateful agents
  • ✓ Tool use
  • ✓ Multi-model
  • ✓ Self-editing memory
Pros
  • + Most popular self-hosted chat UI
  • + Supports Ollama + OpenAI APIs
  • + RAG and document upload
  • + Multi-user management
  • + Active development
  • + Solves long-term memory problem
  • + Self-editing memory
  • + Stateful agents
  • + Multi-model support
  • + Active research backing
Cons
  • − Duplicate entry — see Open WebUI
  • − Requires Docker
  • − Resource intensive
  • − Plugin ecosystem growing
  • − Complex memory management
  • − Performance overhead
  • − Rebranding confusion
  • − Still experimental
Tags
chatollamalocalopen-source
memorystatefulagentsopen-source

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