Vercel AI Chatbot
Open SourceVercel's official open-source AI chatbot template — Next.js App Router with the AI SDK, streaming chat UI, model-provider switching (OpenAI, Anthropic, xAI and more), auth, and chat history persistence.
Why we recommend Vercel AI Chatbot
This is the reference implementation for the pattern every AI product starts from: a streaming chat interface over swappable LLM providers. Built by Vercel on their AI SDK, it demonstrates the hard parts correctly — token streaming into React server components, optimistic UI, message persistence with resumable chats, auth, and clean provider abstraction so switching between OpenAI, Anthropic, xAI or open models is configuration, not surgery. Because the AI SDK team maintains it, the repo tracks the fast-moving SDK's best practices in near-real time, making it simultaneously a template, a living documentation artifact, and one of the most-forked starting points for AI SaaS front ends.
Best use cases
Best for: developers building any chat-shaped AI product who want streaming, history and auth solved, teams evaluating multiple model providers behind one UI, and engineers learning how the AI SDK is meant to be used from its authors' own code.
Honest limitations
Not for: production without hardening — there's no billing, rate limiting or team model, and costs from unmetered LLM calls are your problem on day one. It assumes the Vercel-adjacent stack (AI SDK, serverless Postgres, blob storage); porting elsewhere is work. The AI SDK's rapid evolution means periodic breaking-change migrations.
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