Vercel AI SDK Config Generator

The Vercel AI SDK (ai package) is a TypeScript toolkit for building AI-powered applications with React, Next.js, Svelte, Vue, and Node.js. It provides useChat and useCompletion hooks for the frontend, and streamText/generateText/generateObject on the backend. It supports 20+ model providers through a unified interface.

useChat manages multi-turn conversations with a messages array, handling the back-and-forth dialog history. useCompletion is for single-turn prompt → response flows. Use useChat for chatbots and agents; use useCompletion for text transformation, summarization, and single-shot generation tasks.

The SDK uses the Web Streams API. On the backend, return a StreamingTextResponse with a ReadableStream. On the frontend, useChat/useCompletion automatically handle incremental updates — no manual stream parsing needed. The useChat hook updates the messages array in real-time as chunks arrive.

Core providers: OpenAI, Anthropic, Google Gemini, Mistral, Cohere, Hugging Face, AWS Bedrock, Azure OpenAI, and more via community providers. Switch providers by changing the model import — the API stays the same. This makes it easy to A/B test models or swap providers without rewriting your app.

Use generateObject with a Zod schema to get type-safe structured responses. The SDK automatically handles JSON mode or tool-based extraction depending on the model. Perfect for extracting data, generating forms, or any task needing predictable JSON output structure.