I agree that Typst is nicer to write. The difference is simply in the approach. Typst replaces LaTeX and expects you to migrate, while ExactTeX is a strict supe

I agree that Typst is nicer to write. The difference is simply in the approach. Typst replaces LaTeX and expects you to migrate, while ExactTeX is a strict superset. You can rename a `.tex` file to `.xtex`, keep the exact same output, and add checks only where you need them. It is meant for the existing papers, templates, and journal classes that are not going away. Typst works well if you can leave LaTeX behind. ExactTeX is for cases where you cannot or do not want to.