OpenRouter

OpenRouter

OpenRouter is an AI model aggregation gateway that unifies hundreds of models from providers such as OpenAI, Anthropic, Google, Meta, and Mistral into a single OpenAI-compatible API. Developers can freely switch between models, compare pricing, and benefit from automatic failover, making it a popular piece of infrastructure for building AI applications.

API Interfaces
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About This Tool

1. What is OpenRouter?

OpenRouter is a unified LLM API gateway. It aggregates models from various providers (OpenAI, Anthropic, Google, Meta, Mistral, etc.) under one OpenAI-compatible interface. Developers only need to change the model name to switch between different models — no need to integrate multiple SDKs.

2. Core Features

  • Unified Interface: One API to access hundreds of models.
  • Automatic Routing & Failover: Automatically switches when a model becomes unavailable.
  • Price Comparison: Transparently displays the cost of each model.
  • Usage Analytics: Track consumption by application and model.

3. Who It's For

  • AI application developers who need multi-model switching and price comparison.
  • Technical teams building Agent and RAG products.

4. FAQ

Does OpenRouter charge a fee? Registration is free. You are billed based on actual usage of each model, and some models offer free tiers.

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