The answer is complicated, because there is no one-size-fits-all answer to this question. It depends on the project and the developer’s goals. In general, though, Next.js is designed to be faster than React. It offers a range of features that make it easier to build performance-optimized websites and applications.
Advantages of Next.js include server-side rendering, automatic code splitting, static exporting, and built-in CSS support. React has several advantages as well, such as flexible development, powerful tooling, reusable components, and the popularity of the framework.
Whether Next.js is faster than React depends on the project and the developer’s goals. Next.js is designed to be faster than React, but React is more flexible and has a powerful tooling ecosystem. Ultimately, the best choice will depend on the project and the needs of the developer.