LettavsText Generation WebUI

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 ↗

Text Generation WebUI

Chat Interfaces

Gradio web UI for running large language models

Full review →Website ↗
FeatureLettaText Generation WebUI
CategoryAI Agent FrameworksChat Interfaces
PricingFree (open-source) + CloudFree (open-source)
GitHub Stars
13k
✓ More stars
40k
PlatformsLinux, macOS, DockerLinux, Windows, macOS
Key Features
  • ✓ Long-term memory
  • ✓ Stateful agents
  • ✓ Tool use
  • ✓ Multi-model
  • ✓ Self-editing memory
  • ✓ Multiple backends
  • ✓ LoRA training
  • ✓ Chat modes
  • ✓ Extensions
  • ✓ API server
Pros
  • + Solves long-term memory problem
  • + Self-editing memory
  • + Stateful agents
  • + Multi-model support
  • + Active research backing
  • + Most feature-rich local UI
  • + Multiple backend support
  • + Extensions ecosystem
  • + LoRA training support
  • + Active community
Cons
  • − Complex memory management
  • − Performance overhead
  • − Rebranding confusion
  • − Still experimental
  • − Complex installation
  • − Can be overwhelming
  • − UI feels dated
  • − Frequent breaking changes
Tags
memorystatefulagentsopen-source
localwebuiinferenceopen-source

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