> Discover all available pages from the documentation index: https://mastra.zisheng.pro/zh-HK/llms.txt # ![StepFun (全球) 標誌](https://models.dev/logos/stepfun-ai.svg)StepFun (全球) 透過 Mastra 的模型路由器存取 8 個 StepFun (全球) 模型。系統會自動使用 `STEPFUN_API_KEY` 環境變數進行驗證。 詳情請參閱[StepFun (全球) 文件](https://platform.stepfun.ai/docs/en/overview/concept)。 ```bash STEPFUN_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: 'stepfun-ai/step-1-32k', }) // 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` 端點。部分 Provider 專屬功能可能無法使用,詳情請參閱[StepFun (全球) 文件](https://platform.stepfun.ai/docs/en/overview/concept)。 ## 模型 | Model | Context | Tools | Reasoning | Image | Audio | Video | Input $/1M | Output $/1M | | -------------------------------- | ------- | ----- | --------- | ----- | ----- | ----- | ---------- | ----------- | | `stepfun-ai/step-1-32k` | 33K | | | | | | $2 | $10 | | `stepfun-ai/step-2-16k` | 16K | | | | | | $5 | $16 | | `stepfun-ai/step-3.5-flash` | 256K | | | | | | $0.10 | $0.30 | | `stepfun-ai/step-3.5-flash-2603` | 256K | | | | | | $0.10 | $0.30 | | `stepfun-ai/step-3.7-flash` | 256K | | | | | | $0.18 | $1 | | `stepfun-ai/step-tts-2` | — | | | | | | — | — | | `stepfun-ai/stepaudio-2.5-asr` | — | | | | | | — | — | | `stepfun-ai/stepaudio-2.5-tts` | — | | | | | | — | — | ## 進階設定 ### 自訂標頭 ```typescript const agent = new Agent({ id: 'custom-agent', name: 'custom-agent', model: { url: 'https://api.stepfun.ai/v1', id: 'stepfun-ai/step-1-32k', apiKey: process.env.STEPFUN_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 ? 'stepfun-ai/stepaudio-2.5-tts' : 'stepfun-ai/step-1-32k' }, }) ```