AI has changed how we code, and it quietly picked a winner. When you ask an LLM to build a UI, it reaches for React almost every time—not because React is objectively better than Vue, Svelte, or Solid, but because React dominates the training data across GitHub. In this video, I break down the React + AI stack for 2026, starting with the foundation: React with TypeScript. TypeScript catches mistakes early, improves autocomplete, and gives AI tools better context so you spend less time fixing generated code. From there, I walk through the tools I’d actually reach for: Next.js if you want a mature ecosystem with full React Server Components support, or TanStack Start if you prefer less magic and more control. I cover styling with Tailwind, UI components with shadcn (because the components live in your codebase and AI can edit them directly), and data fetching with TanStack Query. Then we get into routing (TanStack Router for type safety), state management (Zustand), forms (React Hook Form), testing (Vitest + React Testing Library + Playwright), and the AI layer (AI SDK, with TanStack AI as one to watch). I also touch type-safe APIs with tRPC, validation with Zod, backend options (Supabase vs Convex), ORM choices (Prisma vs Drizzle), auth with Better Auth, plus Motion, TanStack Table, React Native with Expo, Storybook, and AI dev tools like Builder, Cursor, and Claude Code.