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

# ![Anthropic 標誌](https://models.dev/logos/anthropic.svg)Anthropic

透過 Mastra 的模型路由器存取 13 個 Anthropic 模型。系統會自動使用 `ANTHROPIC_API_KEY` 環境變數完成身分驗證。

如需進一步了解，請參閱[Anthropic 文件](https://docs.anthropic.com/en/docs/about-claude/models)。

```bash
ANTHROPIC_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: 'anthropic/claude-fable-5',
})

// 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)
}
```

## 模型

| Model                                  | Context | Tools | Reasoning | Image | Audio | Video | Input $/1M | Output $/1M |
| -------------------------------------- | ------- | ----- | --------- | ----- | ----- | ----- | ---------- | ----------- |
| `anthropic/claude-fable-5`             | 1.0M    |       |           |       |       |       | $10        | $50         |
| `anthropic/claude-haiku-4-5`           | 200K    |       |           |       |       |       | $1         | $5          |
| `anthropic/claude-haiku-4-5-20251001`  | 200K    |       |           |       |       |       | $1         | $5          |
| `anthropic/claude-opus-4-5`            | 200K    |       |           |       |       |       | $5         | $25         |
| `anthropic/claude-opus-4-5-20251101`   | 200K    |       |           |       |       |       | $5         | $25         |
| `anthropic/claude-opus-4-6`            | 1.0M    |       |           |       |       |       | $5         | $25         |
| `anthropic/claude-opus-4-7`            | 1.0M    |       |           |       |       |       | $5         | $25         |
| `anthropic/claude-opus-4-8`            | 1.0M    |       |           |       |       |       | $5         | $25         |
| `anthropic/claude-opus-5`              | 1.0M    |       |           |       |       |       | $5         | $25         |
| `anthropic/claude-sonnet-4-5`          | 1.0M    |       |           |       |       |       | $3         | $15         |
| `anthropic/claude-sonnet-4-5-20250929` | 1.0M    |       |           |       |       |       | $3         | $15         |
| `anthropic/claude-sonnet-4-6`          | 1.0M    |       |           |       |       |       | $3         | $15         |
| `anthropic/claude-sonnet-5`            | 1.0M    |       |           |       |       |       | $2         | $10         |

## 進階設定

### 自訂標頭

```typescript
const agent = new Agent({
  id: 'custom-agent',
  name: 'custom-agent',
  model: {
    id: 'anthropic/claude-fable-5',
    apiKey: process.env.ANTHROPIC_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 ? 'anthropic/claude-sonnet-5' : 'anthropic/claude-fable-5'
  },
})
```

## Provider 選項

Anthropic 透過 `providerOptions` 參數支援以下 Provider 特有選項：

```typescript
const response = await agent.generate('Hello!', {
  providerOptions: {
    anthropic: {
      // See available options in the table below
    },
  },
})
```

### 可用選項

**sendReasoning** (`boolean | undefined`)

**structuredOutputMode** (`"outputFormat" | "jsonTool" | "auto" | undefined`)

**thinking** (`{ type: "adaptive"; display?: "omitted" | "summarized" | undefined; } | { type: "enabled"; budgetTokens?: number | undefined; } | { type: "disabled"; } | undefined`)

**disableParallelToolUse** (`boolean | undefined`)

**cacheControl** (`{ type: "ephemeral"; ttl?: "5m" | "1h" | undefined; } | undefined`)

**metadata** (`{ userId?: string | undefined; } | undefined`)

**mcpServers** (`{ type: "url"; name: string; url: string; authorizationToken?: string | null | undefined; toolConfiguration?: { enabled?: boolean | null | undefined; allowedTools?: string[] | null | undefined; } | null | undefined; }[] | undefined`)

**container** (`{ id?: string | undefined; skills?: { type: "anthropic" | "custom"; skillId: string; version?: string | undefined; }[] | undefined; } | undefined`)

**toolStreaming** (`boolean | undefined`)

**effort** (`"low" | "medium" | "high" | "xhigh" | "max" | undefined`)

**taskBudget** (`{ type: "tokens"; total: number; remaining?: number | undefined; } | undefined`)

**speed** (`"fast" | "standard" | undefined`)

**inferenceGeo** (`"us" | "global" | undefined`)

**fallbacks** (`"default" | { model: string; max_tokens?: number | undefined; thinking?: Record<string, unknown> | undefined; output_config?: Record<string, unknown> | undefined; speed?: "fast" | "standard" | undefined; }[] | undefined`)

**anthropicBeta** (`string[] | undefined`)

**contextManagement** (`{ edits: ({ type: "clear_tool_uses_20250919"; trigger?: { type: "input_tokens"; value: number; } | { type: "tool_uses"; value: number; } | undefined; keep?: { type: "tool_uses"; value: number; } | undefined; clearAtLeast?: { ...; } | undefined; clearToolInputs?: boolean | undefined; excludeTools?: string[] | undefin...`)

## 直接安裝 Provider

你也可以直接將此 Provider 安裝為獨立套件，用它取代 Mastra 模型路由字串。詳情請參閱[套件文件](https://www.npmjs.com/package/@ai-sdk/anthropic)。

**npm**:

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

**pnpm**:

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

**Yarn**:

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

**Bun**:

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

如需此 Provider 的詳細說明，請參閱 [AI SDK Anthropic Provider 文件](https://ai-sdk.dev/providers/ai-sdk-providers/anthropic)。