Models

List Models

Retrieve a list of all models available through Router9.

GET /v1/models

Example Request

curl https://api.router9.com/v1/models \
  -H "Authorization: Bearer sk-r9k-your-key"

Response

{
  "object": "list",
  "data": [
    {
      "id": "gpt-4o",
      "object": "model",
      "owned_by": "openai"
    },
    {
      "id": "gpt-4o-mini",
      "object": "model",
      "owned_by": "openai"
    },
    {
      "id": "claude-3-sonnet",
      "object": "model",
      "owned_by": "anthropic"
    },
    {
      "id": "claude-3-opus",
      "object": "model",
      "owned_by": "anthropic"
    },
    {
      "id": "gemini-2.0-flash",
      "object": "model",
      "owned_by": "google"
    },
    {
      "id": "auto",
      "object": "model",
      "owned_by": "router9"
    }
  ]
}

Model Routing

Router9 uses a dynamic routing system. When you request a model:

The model ID is matched against configured routes using prefix matching
Routes are sorted by priority (highest first)
The request is forwarded to the matched upstream provider

The `auto` Model

Setting model to "auto" lets Router9 automatically select a model. This is useful when you want the best available model without hardcoding a specific one.

Available Providers

Provider	Example Models
OpenAI	`gpt-4o`, `gpt-4o-mini`
Anthropic	`claude-3-sonnet`, `claude-3-opus`
Google	`gemini-2.0-flash`
OpenRouter	All models available via OpenRouter

The exact list of available models depends on your server's configuration. Use the List Models endpoint to see what's currently available.

Model Access by Plan

Plan	Models Available
Free	Free-tier OpenRouter models
Assistant	All models (GPT-4o, Claude, Gemini, etc.)
Engineer	All models with low-latency routing