How to Use DeepSeek with the Vercel AI SDK — DeepSeek Provider Guide

In this tutorial, you'll learn how to use DeepSeek models with the Vercel AI SDK through Puter's OpenAI-compatible provider endpoint. No DeepSeek API key needed — just your Puter auth token.

About DeepSeek

DeepSeek is a Chinese AI lab that gained attention for training highly capable models at significantly lower cost than Western competitors. Their models are particularly strong at coding, math, and reasoning tasks. DeepSeek R1 introduced chain-of-thought reasoning that rivals much larger models. Through Puter, you can use DeepSeek models with the Vercel AI SDK without a separate API key.

Prerequisites

• A Puter account
• Your Puter auth token, go to puter.com/dashboard and click Copy to get your auth token

• Node.js installed on your machine

Setup

Install the Vercel AI SDK and the OpenAI provider:

npm install ai @ai-sdk/openai

Puter works as an OpenAI-compatible provider, so you use @ai-sdk/openai to connect. Configure it with Puter's base URL and your auth token:

import { createOpenAI } from '@ai-sdk/openai';

const puter = createOpenAI({
  baseURL: 'https://api.puter.com/puterai/openai/v1/',
  apiKey: 'YOUR_PUTER_AUTH_TOKEN',
});

Replace YOUR_PUTER_AUTH_TOKEN with the auth token you copied from your Puter dashboard. That's all you need. No DeepSeek API key required.

Basic Text Generation

Here's a simple text generation call using DeepSeek V3.2:

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

const puter = createOpenAI({
  baseURL: 'https://api.puter.com/puterai/openai/v1/',
  apiKey: 'YOUR_PUTER_AUTH_TOKEN',
});

const { text } = await generateText({
  model: puter.chat('deepseek/deepseek-v3.2'),
  prompt: 'What is the capital of France?',
});

console.log(text);

The code is identical to what you'd write for any OpenAI provider. The only difference is the base URL and the model string.

Streaming

For longer responses, use streamText to get results in real-time:

import { createOpenAI } from '@ai-sdk/openai';
import { streamText } from 'ai';

const puter = createOpenAI({
  baseURL: 'https://api.puter.com/puterai/openai/v1/',
  apiKey: 'YOUR_PUTER_AUTH_TOKEN',
});

const result = streamText({
  model: puter.chat('deepseek/deepseek-v3.2'),
  prompt: 'Write a short story about a robot learning to paint.',
});

for await (const chunk of result.textStream) {
  process.stdout.write(chunk);
}

Use streamText instead of generateText and iterate over result.textStream to get text chunks as they arrive.

Why Use Puter?

You could use DeepSeek's API directly. Here's why Puter is a simpler option:

• One API key for everything — no need to sign up for separate DeepSeek, Anthropic, or OpenAI accounts. Your Puter auth token covers all providers.
• One setup for all models — the same Puter config works for Claude, GPT, Gemini, Llama, and 400+ other models. Just change the model string.
• No extra packages — without Puter, each AI provider needs its own SDK package and API key. With Puter, everything goes through a single @ai-sdk/openai setup.

Conclusion

You now have the DeepSeek provider set up through the Vercel AI SDK via Puter — no API key needed. Swap the model string to use any DeepSeek model, from the efficient V3 to the reasoning-focused R1, or any of the hundreds of other AI models available through Puter.

Related

• How to Use Vercel AI SDK with Puter
• Free, Unlimited DeepSeek API
• DeepSeek Models on Puter
• Access Llama Using Vercel AI SDK
• Access Qwen Using Vercel AI SDK
• Supported AI Models