Vercel AI SDK

The Vercel AI SDK is a TypeScript library designed for building AI-powered applications, particularly focused on streaming user interfaces. It provides a unified API for working with various LLM providers and first-class support for React, Next.js, and other modern web frameworks.

Key features include: provider-agnostic API supporting OpenAI, Anthropic, Google, and others; streaming helpers for real-time UI updates; React hooks like useChat and useCompletion; generative UI for rendering components based on AI output; and tool calling with structured outputs.

The AI SDK has become popular for building production AI applications because it handles common challenges: streaming responses to the browser, managing conversation state, integrating with multiple providers, and building reactive UIs that update as AI generates content. It's particularly well-suited for Next.js applications deployed on Vercel.