Streaming Generative UI in Next.js with the AI SDK
Streaming React components straight from the server lets you build AI interfaces with zero loading-spinner waterfalls.
The AI SDK lets you stream typed UI directly from server actions instead of shuttling raw JSON to the client and reassembling it. That single shift collapses a whole category of client state. I show how I build a real-time research assistant: tool calls render their own loading and result components, partial responses stream token-by-token, and the entire thing degrades gracefully when a model call times out. We cover the mental model behind streamUI, how to keep server and client boundaries clean in the App Router, and where this approach starts to hurt.
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