Vercel AI SDK
OtherVercel's open-source AI development kit. Easily build AI applications with React/Next.js. Streaming UI, multi-model support.
What is Vercel AI SDK?
Vercel AI SDK is a TypeScript SDK provided by Vercel as open source for AI application developers. It integrates with major frameworks including React, Next.js, Svelte, Vue, and Nuxt, enabling rapid construction of AI-powered web applications. It allows you to use models from major AI providers — OpenAI, Anthropic, Google, Mistral, Groq, and more — through a unified interface, with provider switching possible with a single line of code change. It comprehensively provides all the features needed for building AI UIs, including streaming response display, tool calling, structured data output, and embeddings. As an open-source project under the MIT license with over 1 million npm weekly downloads, it has become the de facto standard for AI web application development.
Pricing Plans
Key Features
Pros & Cons
Pros
- ●Fully open source (MIT license)
- ●Deep integration with React/Next.js
- ●10+ providers accessible through unified API
- ●Easy implementation of streaming UI
- ●TypeScript type safety reduces bugs
Cons
- ●Limited to TypeScript/JavaScript environments
- ●AI API usage fees are separate
- ●Learning curve suited for React/Next.js developers
- ●UI components need to be provided separately
Frequently Asked Questions
Q. Is Vercel AI SDK free?
A. Yes, it is completely free under the MIT open-source license. However, API usage fees for the AI models you connect to (OpenAI, Anthropic, etc.) are charged separately.
Q. Can I use it with frameworks other than Next.js?
A. Yes, it supports major frameworks including React, Svelte, Vue, and Nuxt. It can also be used server-side with Node.js.
Q. Can I build a chat UI like ChatGPT?
A. Yes, using the useChat() hook, you can build a streaming-compatible chat UI in just a few lines of code. Message management, loading states, and error handling are automated.
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Groq
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OpenRouter
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Together AI
A high-speed inference and fine-tuning platform for open-source AI models. Access Llama, Mistral, SDXL, and more at low cost.