AI SDK

AI SDK is an open-source TypeScript toolkit for building AI-powered applications. It provides a unified API that lets developers generate text, images, speech, transcriptions, and even video through a single interface. Instead of writing separate code for each AI provider, you write one set of functions and swap models by changing a string. The SDK handles streaming, error handling, and tool calling out of the box.

The core idea is simplicity. You install the `ai` package from npm, import functions like `generateText` or `streamText`, and pass a model identifier (e.g., `"openai/gpt-5.5"` or `"xai/grok-4.6"`). The SDK automatically routes requests to the right provider and returns responses in a consistent format. It supports over 100 models through Vercel's AI Gateway, and you can add custom providers. Built-in fallbacks mean if one model fails, the SDK can retry with another — no extra code needed. The UI layer offers framework-agnostic hooks for chat interfaces and generative UIs, compatible with React, Next.js, Vue, Svelte, and Node.js.

This tool is made for developers who want to add AI features to their apps without getting locked into a single provider. It's especially useful for teams building chatbots, content generation tools, or any application that needs reliable, real-time AI responses. The SDK also integrates with Vercel's ecosystem (AI Gateway, Sandbox, Workflows) for scaling in production. With 18 million weekly downloads and 26,000+ GitHub stars, it's already a standard choice in the JavaScript AI development community.