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Vercel AI SDK

TypeScript-first — streaming UI + tool calling + Next.js integration. Leader for frontend agents.

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Vercel's TS-native AI SDK. Strengths:

Streaming UI — useChat, useCompletion hooks; token streaming to React/Vue/Svelte components
Tool calling — vendor-agnostic interface, multi-step agentic execution
Generative UI — agents stream JSX components, dynamic UI
generateObject — structured output with Zod schemas
Provider abstraction — OpenAI, Anthropic, Google, Mistral, xAI, custom

Default choice for Next.js + agent combo.

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