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。

.env

ANTHROPIC_API_KEY=your-api-key

src/mastra/agents/my-agent.ts

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

13 available models

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

src/mastra/agents/my-agent.ts

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

src/mastra/agents/my-agent.ts

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：

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。

npm

npm install @ai-sdk/anthropic

pnpm

pnpm add @ai-sdk/anthropic

Yarn

yarn add @ai-sdk/anthropic

Bun

bun add @ai-sdk/anthropic

如需此 Provider 的詳細說明，請參閱 AI SDK Anthropic Provider 文件。