DeepSeek

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

如需進一步了解，請參閱DeepSeek 文件。

.env

DEEPSEEK_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: 'deepseek/deepseek-chat',
})

// 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

4 available models

Model	Context	Tools	Reasoning	Image	Audio	Video	Input $/1M	Output $/1M
deepseek/deepseek-chat	1.0M						$0.14	$0.28
deepseek/deepseek-reasoner	1.0M						$0.14	$0.28
deepseek/deepseek-v4-flash	1.0M						$0.14	$0.28
deepseek/deepseek-v4-pro	1.0M						$0.43	$0.87

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: {
    url: 'https://api.deepseek.com',
    id: 'deepseek/deepseek-chat',
    apiKey: process.env.DEEPSEEK_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 ? 'deepseek/deepseek-v4-pro' : 'deepseek/deepseek-chat'
  },
})

Provider 選項

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

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

可用選項

thinking?:

{ type?: "adaptive" | "enabled" | "disabled" | undefined; } | undefined

reasoningEffort?:

"low" | "medium" | "high" | "xhigh" | "max" | undefined

strictJsonSchema?:

boolean | undefined