OpenRoutervsOpen WebUI

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

OpenRouter

LLM APIs & Inference

Unified API for 200+ AI models from all providers

Full review →Website ↗

Open WebUI

Chat Interfaces

Beautiful self-hosted ChatGPT-like interface for any LLM

Full review →Website ↗
FeatureOpenRouterOpen WebUI
CategoryLLM APIs & InferenceChat Interfaces
PricingPay-per-use (varies by model)Free (open-source)
GitHub Stars—
✓ More stars
65k
PlatformsWebmacOS, Linux, Windows, Docker
Key Features
  • ✓ 200+ models
  • ✓ Unified API
  • ✓ Auto-fallback
  • ✓ Rate limiting
  • ✓ Usage tracking
  • ✓ OpenAI-compatible
  • ✓ Ollama integration
  • ✓ Multi-model
  • ✓ RAG
  • ✓ Web search
  • ✓ Voice input/output
  • ✓ Plugins
  • ✓ User management
Pros
  • + Access to 100+ models via one API
  • + Automatic fallbacks
  • + Pay-per-use pricing
  • + Model comparison features
  • + Free models available
  • + Feature-rich ChatGPT alternative
  • + Supports Ollama + OpenAI APIs
  • + Document upload and RAG
  • + Multi-user with auth
  • + Very active development
Cons
  • − Added latency from proxy layer
  • − Markup on some model prices
  • − Depends on upstream availability
  • − Limited advanced features
  • − Requires Docker for easy setup
  • − Can be slow with large documents
  • − Plugin ecosystem still growing
  • − Resource intensive
Tags
apimulti-modelgatewayroutingpay-per-use
open-sourcechatuiollamaself-hosted

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