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

# ![Upstage 標誌](https://models.dev/logos/upstage.svg)Upstage

透過 Mastra 的模型路由器存取 4 個 Upstage 模型。系統會自動使用 `UPSTAGE_API_KEY` 環境變數完成身分驗證。

如需進一步了解，請參閱[Upstage 文件](https://developers.upstage.ai)。

```bash
UPSTAGE_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: 'upstage/solar-mini',
})

// 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)
}
```

> **資訊:** Mastra 使用與 OpenAI 相容的 `/chat/completions` endpoint。部分 Provider 特有功能可能無法使用，詳情請參閱[Upstage 文件](https://developers.upstage.ai)。

## 模型

| Model                | Context | Tools | Reasoning | Image | Audio | Video | Input $/1M | Output $/1M |
| -------------------- | ------- | ----- | --------- | ----- | ----- | ----- | ---------- | ----------- |
| `upstage/solar-mini` | 33K     |       |           |       |       |       | $0.15      | $0.15       |
| `upstage/solar-pro2` | 66K     |       |           |       |       |       | $0.25      | $0.25       |
| `upstage/solar-pro3` | 131K    |       |           |       |       |       | $0.25      | $0.25       |
| `upstage/solar-pro4` | 524K    |       |           |       |       |       | $0.30      | $1          |

## 進階設定

### 自訂標頭

```typescript
const agent = new Agent({
  id: 'custom-agent',
  name: 'custom-agent',
  model: {
    url: 'https://api.upstage.ai/v1/solar',
    id: 'upstage/solar-mini',
    apiKey: process.env.UPSTAGE_API_KEY,
    headers: {
      'X-Custom-Header': 'value',
    },
  },
})
```

### 動態選擇模型

```typescript
const agent = new Agent({
  id: 'dynamic-agent',
  name: 'Dynamic Agent',
  model: ({ requestContext }) => {
    const useAdvanced = requestContext.task === 'complex'
    return useAdvanced ? 'upstage/solar-pro4' : 'upstage/solar-mini'
  },
})
```