# OpenRouter

[Get an OpenRouter API key](https://openrouter.ai/settings/keys)

## Usage

{% code title=".env" %}

```bash
OPENROUTER_API_KEY=
```

{% endcode %}

```typescript
import { TokenJS } from 'token.js'

// Create the Token.js client
const tokenjs = new TokenJS()

async function main() {
  // Create a model response
  const completion = await tokenjs.chat.completions.create({
    // Specify the provider and model
    provider: 'openrouter',
    model: 'nvidia/nemotron-4-340b-instruct',
    // Define your message
    messages: [
      {
        role: 'user',
        content: 'Hello!',
      },
    ],
  })
  console.log(completion.choices[0])
}
main()
```

## Compatibility

OpenRouter supports more than 180 models from a variety of providers which may have varying feature support. We recommend reviewing the OpenRouter and provider documentation for specific compatibility information.

## Additional Resources

* [Supported Models](https://openrouter.ai/models)
* [OpenRouter Documentation](https://openrouter.ai/docs/quick-start)


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.tokenjs.ai/providers/openrouter.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.