ChainlitvsOpen WebUI

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

Chainlit

Chatbot Builders

Build production-ready conversational AI apps in minutes

Full review →Website ↗

Open WebUI

Chat Interfaces

Beautiful self-hosted ChatGPT-like interface for any LLM

Full review →Website ↗
FeatureChainlitOpen WebUI
CategoryChatbot BuildersChat Interfaces
PricingFree (open-source)Free (open-source)
GitHub Stars
8k
✓ More stars
65k
PlatformsLinux, macOS, WindowsmacOS, Linux, Windows, Docker
Key Features
  • ✓ Chat UI
  • ✓ File upload
  • ✓ Streaming
  • ✓ Authentication
  • ✓ Multi-step display
  • ✓ Ollama integration
  • ✓ Multi-model
  • ✓ RAG
  • ✓ Web search
  • ✓ Voice input/output
  • ✓ Plugins
  • ✓ User management
Pros
  • + Beautiful chat UI out of the box
  • + Easy Python integration
  • + Streaming support
  • + File upload handling
  • + Authentication built-in
  • + Feature-rich ChatGPT alternative
  • + Supports Ollama + OpenAI APIs
  • + Document upload and RAG
  • + Multi-user with auth
  • + Very active development
Cons
  • − Python only
  • − Less customizable than React alternatives
  • − Smaller community
  • − Limited component library
  • − Requires Docker for easy setup
  • − Can be slow with large documents
  • − Plugin ecosystem still growing
  • − Resource intensive
Tags
chatuipythonopen-source
open-sourcechatuiollamaself-hosted

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