Models

OpenRouter strives to provide access to every potentially useful text-based AI model. In practice there are constraints on where models are reliably hosted, and on our ability to be aware of every new, useful model. If there are models you are interested in that OpenRouter doesn't have, please tell us about in our Discord channel.

Explore and browse 0 models via the website, or via our API:

Note: Different models tokenize text in different ways. Some models break up text into chunks of multiple characters (GPT, Claude, Llama, etc) while others tokenize by character (PaLM). This means that token counts (and therefore costs) will vary between models, even when inputs and outputs are the same. Costs are displayed and billed according to the tokenizer for the model in use.

For Providers

If you'd like to be a model provider and sell inference on OpenRouter, fill out our form to get started.

For the /api/v1/models/models API endpoint, please return a list of all available models on your platform. Below is an example of the response format:

json
{
  "data": [
    {
      "id": "anthropic/claude-2.0",
      "name": "Anthropic: Claude v2.0",
      "created": 1690502400,
      "description": "Anthropic's flagship model...", // Optional
      "context_length": 100000, // Required
      "max_completion_tokens": 4096, // Optional
      "pricing": {
        "prompt": "0.000008", // pricing per 1 token
        "completion": "0.000024", // pricing per 1 token
        "image": "0", // pricing per 1 image
        "request": "0" // pricing per 1 request
      }
    }
  ]
}

NOTE: pricing fields are in string format to avoid floating point precision issues, and must be in USD.