Vercel AI SDK

A unified TypeScript SDK for building AI-powered applications with text generation, structured output, tool calling, and agent workflows across 100+ LLM models. Key differentiator is its framework-agnostic design with built-in streaming, multi-provider support, and seamless provider switching in one line of code. Best suited for building AI chatbots, agents, and generative UIs with React, Next.js, Vue, or Svelte.