React is a UI library. Next.js is a full framework built on top of React. The question is which is right for your use case.
Use React when:
- You're building a SPA
- SEO is not a priority
- You want full control over your stack
Use Next.js when:
- SEO matters
- You need server-side rendering
- You want a batteries-included framework
For most client projects in 2025, we default to Next.js.