DeepSeek Provider

The DeepSeek provider offers access to powerful language models through the DeepSeek API, including their DeepSeek-V3 model.

API keys can be obtained from the DeepSeek Platform.

Setup

The DeepSeek provider is available via the @ai-sdk/deepseek module. You can install it with:

pnpm add @ai-sdk/deepseek

Provider Instance

You can import the default provider instance deepseek from @ai-sdk/deepseek:

import { deepseek } from '@ai-sdk/deepseek';

For custom configuration, you can import createDeepSeek and create a provider instance with your settings:

import { createDeepSeek } from '@ai-sdk/deepseek';

const deepseek = createDeepSeek({
  apiKey: process.env.DEEPSEEK_API_KEY ?? '',
});

You can use the following optional settings to customize the DeepSeek provider instance:

• baseURL string

  Use a different URL prefix for API calls. The default prefix is https://api.deepseek.com/v1.

• apiKey string

  API key that is being sent using the Authorization header. It defaults to the DEEPSEEK_API_KEY environment variable.

• headers Record<string,string>

  Custom headers to include in the requests.

• fetch (input: RequestInfo, init?: RequestInit) => Promise<Response>

  Custom fetch implementation.

Language Models

You can create language models using a provider instance:

import { deepseek } from '@ai-sdk/deepseek';
import { generateText } from 'ai';

const { text } = await generateText({
  model: deepseek('deepseek-chat'),
  prompt: 'Write a vegetarian lasagna recipe for 4 people.',
});

DeepSeek language models can be used in the streamText and streamUI functions (see AI SDK Core and AI SDK RSC).

Model Capabilities