GET
/
v1
/
public
/
model-registry
/
models
Returns a comprehensive list of all AI models with their configurations, pricing, and capabilities
curl --request GET \
  --url https://api.helicone.ai/v1/public/model-registry/models
{
  "models": [
    {
      "id": "claude-opus-4-1",
      "name": "Anthropic: Claude Opus 4.1",
      "author": "anthropic",
      "contextLength": 200000,
      "endpoints": [
        {
          "provider": "anthropic",
          "providerSlug": "anthropic",
          "supportsPtb": true,
          "pricing": {
            "prompt": 15,
            "completion": 75,
            "cacheRead": 1.5,
            "cacheWrite": 18.75
          }
        }
      ],
      "maxOutput": 32000,
      "trainingDate": "2025-08-05",
      "description": "Most capable Claude model with extended context",
      "inputModalities": [
        null
      ],
      "outputModalities": [
        null
      ],
      "supportedParameters": [
        null,
        null,
        null,
        null,
        null,
        null,
        null
      ]
    }
  ],
  "total": 150,
  "filters": {
    "providers": [
      {
        "name": "anthropic",
        "displayName": "Anthropic"
      },
      {
        "name": "openai",
        "displayName": "OpenAI"
      },
      {
        "name": "google",
        "displayName": "Google"
      }
    ],
    "authors": [
      "anthropic",
      "openai",
      "google",
      "meta"
    ],
    "capabilities": [
      "audio",
      "image",
      "thinking",
      "caching",
      "reasoning"
    ]
  }
}
This endpoint returns the complete catalog of AI models and provider endpoints that the Helicone AI Gateway can route to. The gateway uses this registry to determine which providers support a requested model and how to intelligently route requests for maximum reliability and cost optimization. When you request a model through the AI Gateway (like gpt-4o-mini), the gateway consults this registry to find all providers offering that model, then applies routing logic to select the best provider based on your configuration, availability, and pricing.

Response

200 - application/json

Complete model registry with models and filter options

​
data
object
required
​
error
enum<number> | null
required