Vercel AI SDK

The Vercel AI SDK is a library for building AI-powered streaming text and chat UIs.

Features

• SWR-powered React, Svelte, Vue and Solid helpers for streaming text responses and building chat and completion UIs
• First-class support for LangChain and OpenAI, Anthropic, Cohere, Hugging Face, Fireworks and Replicate
• Node.js, Serverless, and Edge Runtime support
• Callbacks for saving completed streaming responses to a database (in the same request)

Installation

1pnpm install ai

View the full documentation and examples on sdk.vercel.ai/docs

Example: An AI Chatbot with Next.js and OpenAI

With the Vercel AI SDK, you can build a ChatGPT-like app in just a few lines of code:

1// ./app/api/chat/route.js
2import OpenAI from 'openai';
3import { OpenAIStream, StreamingTextResponse } from '@inkeep/ai-api';
4
5const openai = new OpenAI({
6  apiKey: process.env.OPENAI_API_KEY,
7});
8
9export const runtime = 'edge';
10
11export async function POST(req) {
12  const { messages } = await req.json();
13  const response = await openai.chat.completions.create({
14    model: 'gpt-4',
15    stream: true,
16    messages,
17  });
18  const stream = OpenAIStream(response);
19  return new StreamingTextResponse(stream);
20}

1// ./app/page.js
2'use client';
3
4import { useChat } from '@inkeep/ai-api/react';
5
6export default function Chat() {
7  const { messages, input, handleInputChange, handleSubmit } = useChat();
8
9  return (
10    <div>
11      {messages.map(m => (
12        <div key={m.id}>
13          {m.role}: {m.content}
14        </div>
15      ))}
16
17      <form onSubmit={handleSubmit}>
18        <input
19          value={input}
20          placeholder="Say something..."
21          onChange={handleInputChange}
22        />
23      </form>
24    </div>
25  );
26}

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View the full documentation and examples on sdk.vercel.ai/docs.

Authors

This library is created by Vercel and Next.js team members, with contributions from:

• Jared Palmer (@jaredpalmer) - Vercel
• Shu Ding (@shuding_) - Vercel
• Max Leiter (@max_leiter) - Vercel
• Malte Ubl (@cramforce) - Vercel
• Justin Ridgewell (@jridgewell) - Vercel

Contributors