Next.js AI Boilerplates

Next.js is where most AI product boilerplates ship first - it's the framework with the deepest Vercel AI SDK integration, the most streaming-response examples, and the fastest path from a model API key to a working chat UI. This collection is Next.js kits built specifically for AI products: chat interfaces, RAG pipelines, agent workflows, and the credit-metering and BYO-API-key patterns that AI SaaS needs on top of standard auth and billing. If you're building on a different framework, check the AI category page instead - this list is deliberately narrow to Next.js so the comparisons are apples-to-apples.