# ![Perplexity logo](https://models.dev/logos/perplexity.svg)Perplexity

Access 3 Perplexity models through Mastra's model router. Authentication is handled automatically using the `PERPLEXITY_API_KEY` environment variable.

Learn more in the [Perplexity documentation](https://docs.perplexity.ai).

```bash
PERPLEXITY_API_KEY=your-api-key
```

```typescript
import { Agent } from "@mastra/core/agent";

const agent = new Agent({
  id: "my-agent",
  name: "My Agent",
  instructions: "You are a helpful assistant",
  model: "perplexity/sonar"
});

// Generate a response
const response = await agent.generate("Hello!");

// Stream a response
const stream = await agent.stream("Tell me a story");
for await (const chunk of stream) {
  console.log(chunk);
}
```

## Models

| Model                            | Context | Tools | Reasoning | Image | Audio | Video | Input $/1M | Output $/1M |
| -------------------------------- | ------- | ----- | --------- | ----- | ----- | ----- | ---------- | ----------- |
| `perplexity/sonar`               | 128K    |       |           |       |       |       | $1         | $1          |
| `perplexity/sonar-pro`           | 200K    |       |           |       |       |       | $3         | $15         |
| `perplexity/sonar-reasoning-pro` | 128K    |       |           |       |       |       | $2         | $8          |

## Advanced Configuration

### Custom Headers

```typescript
const agent = new Agent({
  id: "custom-agent",
  name: "custom-agent",
  model: {
    id: "perplexity/sonar",
    apiKey: process.env.PERPLEXITY_API_KEY,
    headers: {
      "X-Custom-Header": "value"
    }
  }
});
```

### Dynamic Model Selection

```typescript
const agent = new Agent({
  id: "dynamic-agent",
  name: "Dynamic Agent",
  model: ({ requestContext }) => {
    const useAdvanced = requestContext.task === "complex";
    return useAdvanced
      ? "perplexity/sonar-reasoning-pro"
      : "perplexity/sonar";
  }
});
```

## Direct Provider Installation

This provider can also be installed directly as a standalone package, which can be used instead of the Mastra model router string. View the [package documentation](https://www.npmjs.com/package/@ai-sdk/perplexity) for more details.

**npm**:

```bash
npm install @ai-sdk/perplexity
```

**pnpm**:

```bash
pnpm add @ai-sdk/perplexity
```

**Yarn**:

```bash
yarn add @ai-sdk/perplexity
```

**Bun**:

```bash
bun add @ai-sdk/perplexity
```

For detailed provider-specific documentation, see the [AI SDK Perplexity provider docs](https://ai-sdk.dev/providers/ai-sdk-providers/perplexity).