# ![Requesty logo](https://models.dev/logos/requesty.svg)Requesty

Access 20 Requesty models through Mastra's model router. Authentication is handled automatically using the `REQUESTY_API_KEY` environment variable.

Learn more in the [Requesty documentation](https://requesty.ai/solution/llm-routing/models).

```bash
REQUESTY_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: "requesty/anthropic/claude-3-7-sonnet"
});

// 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);
}
```

> **Info:** Mastra uses the OpenAI-compatible `/chat/completions` endpoint. Some provider-specific features may not be available. Check the [Requesty documentation](https://requesty.ai/solution/llm-routing/models) for details.

## Models

| Model                                    | Context | Tools | Reasoning | Image | Audio | Video | Input $/1M | Output $/1M |
| ---------------------------------------- | ------- | ----- | --------- | ----- | ----- | ----- | ---------- | ----------- |
| `requesty/anthropic/claude-3-7-sonnet`   | 200K    |       |           |       |       |       | $3         | $15         |
| `requesty/anthropic/claude-haiku-4-5`    | 200K    |       |           |       |       |       | $1         | $5          |
| `requesty/anthropic/claude-opus-4`       | 200K    |       |           |       |       |       | $15        | $75         |
| `requesty/anthropic/claude-opus-4-1`     | 200K    |       |           |       |       |       | $15        | $75         |
| `requesty/anthropic/claude-opus-4-5`     | 200K    |       |           |       |       |       | $5         | $25         |
| `requesty/anthropic/claude-sonnet-4`     | 200K    |       |           |       |       |       | $3         | $15         |
| `requesty/anthropic/claude-sonnet-4-5`   | 1.0M    |       |           |       |       |       | $3         | $15         |
| `requesty/google/gemini-2.5-flash`       | 1.0M    |       |           |       |       |       | $0.30      | $3          |
| `requesty/google/gemini-2.5-pro`         | 1.0M    |       |           |       |       |       | $1         | $10         |
| `requesty/google/gemini-3-flash-preview` | 1.0M    |       |           |       |       |       | $0.50      | $3          |
| `requesty/google/gemini-3-pro-preview`   | 1.0M    |       |           |       |       |       | $2         | $12         |
| `requesty/openai/gpt-4.1`                | 1.0M    |       |           |       |       |       | $2         | $8          |
| `requesty/openai/gpt-4.1-mini`           | 1.0M    |       |           |       |       |       | $0.40      | $2          |
| `requesty/openai/gpt-4o-mini`            | 128K    |       |           |       |       |       | $0.15      | $0.60       |
| `requesty/openai/gpt-5`                  | 400K    |       |           |       |       |       | $1         | $10         |
| `requesty/openai/gpt-5-mini`             | 128K    |       |           |       |       |       | $0.25      | $2          |
| `requesty/openai/gpt-5-nano`             | 16K     |       |           |       |       |       | $0.05      | $0.40       |
| `requesty/openai/o4-mini`                | 200K    |       |           |       |       |       | $1         | $4          |
| `requesty/xai/grok-4`                    | 256K    |       |           |       |       |       | $3         | $15         |
| `requesty/xai/grok-4-fast`               | 2.0M    |       |           |       |       |       | $0.20      | $0.50       |

## Advanced Configuration

### Custom Headers

```typescript
const agent = new Agent({
  id: "custom-agent",
  name: "custom-agent",
  model: {
    url: "https://router.requesty.ai/v1",
    id: "requesty/anthropic/claude-3-7-sonnet",
    apiKey: process.env.REQUESTY_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
      ? "requesty/xai/grok-4-fast"
      : "requesty/anthropic/claude-3-7-sonnet";
  }
});
```