> Discover all available pages from the documentation index: https://mastra.zisheng.pro/ko/llms.txt

# ![AI-ROUTER logo](https://models.dev/logos/ai-router.svg)AI 라우터

Mastra의 Model 라우터를 통해 5개의 AI-ROUTER Model에 액세스하세요. 인증은 다음을 사용하여 자동으로 처리됩니다.`AI_ROUTER_API_KEY` environment variable.

자세한 내용은 다음에서 확인하세요.[AI-ROUTER documentation](https://ai-router.dev/openai-compatible-api-gateway/).

```bash
AI_ROUTER_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: "ai-router/gpt-5.4"
});

// 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);
}
```

> **정보:** Mastra는 OpenAI 호환 `/chat/completions` 엔드포인트를 사용합니다. 일부 Provider별 기능은 사용하지 못할 수 있습니다. 자세한 내용은 [AI-ROUTER 문서](https://ai-router.dev/openai-compatible-api-gateway/)를 참조하세요.

## Model

| Model                     | Context | Tools | Reasoning | Image | Audio | Video | Input $/1M | Output $/1M |
| ------------------------- | ------- | ----- | --------- | ----- | ----- | ----- | ---------- | ----------- |
| `ai-router/gpt-5.4`       | 1.1M    |       |           |       |       |       | $3         | $15         |
| `ai-router/gpt-5.5`       | 1.1M    |       |           |       |       |       | $5         | $30         |
| `ai-router/gpt-5.6-luna`  | 1.1M    |       |           |       |       |       | $1         | $6          |
| `ai-router/gpt-5.6-sol`   | 1.1M    |       |           |       |       |       | $5         | $30         |
| `ai-router/gpt-5.6-terra` | 1.1M    |       |           |       |       |       | $3         | $15         |

## 고급 구성

### 맞춤 헤더

```typescript
const agent = new Agent({
  id: "custom-agent",
  name: "custom-agent",
  model: {
    url: "https://api.ai-router.dev/v1",
    id: "ai-router/gpt-5.4",
    apiKey: process.env.AI_ROUTER_API_KEY,
    headers: {
      "X-Custom-Header": "value"
    }
  }
});
```

### 동적 Model 선택

```typescript
const agent = new Agent({
  id: "dynamic-agent",
  name: "Dynamic Agent",
  model: ({ requestContext }) => {
    const useAdvanced = requestContext.task === "complex";
    return useAdvanced
      ? "ai-router/gpt-5.6-terra"
      : "ai-router/gpt-5.4";
  }
});
```