Get a model by its slug | OpenRouter

curl https://openrouter.ai/api/v1/model/openai/gpt-4 \
     -H "Authorization: Bearer <token>"

{
  "data": {
    "architecture": {
      "input_modalities": [
        "text"
      ],
      "modality": "text->text",
      "output_modalities": [
        "text"
      ],
      "instruct_type": "chatml",
      "tokenizer": "GPT"
    },
    "canonical_slug": "openai/gpt-4",
    "context_length": 8192,
    "created": 1692901234,
    "default_parameters": {
      "frequency_penalty": 0,
      "presence_penalty": 0,
      "repetition_penalty": 1,
      "temperature": 0.7,
      "top_k": 0,
      "top_p": 0.9
    },
    "id": "openai/gpt-4",
    "links": {
      "details": "/api/v1/models/openai/gpt-5.4/endpoints"
    },
    "name": "GPT-4",
    "per_request_limits": null,
    "pricing": {
      "completion": "0.00006",
      "prompt": "0.00003",
      "image": "0",
      "request": "0"
    },
    "supported_parameters": [
      "temperature",
      "top_p",
      "max_tokens"
    ],
    "supported_voices": null,
    "top_provider": {
      "is_moderated": true,
      "context_length": 8192,
      "max_completion_tokens": 4096
    },
    "description": "GPT-4 is a large multimodal model that can solve difficult problems with greater accuracy."
  }
}

Returns full details for a single model identified by its author and slug (e.g. openai/gpt-4). Supports variant suffixes (e.g. openai/gpt-4:free) and resolves known slug aliases.

Authentication

AuthorizationBearer

API key as bearer token in Authorization header

Path parameters

authorstringRequired

The author/organization of the model

slugstringRequired

The model slug, optionally including a variant suffix (e.g. gpt-4 or gpt-4:free)

Response

Returns the model details

dataobject

Information about an AI model available on OpenRouter

Errors

404

Not Found Error

500

Internal Server Error