Tuition and/or registration fees will have to be paid, depending on the institution and on the situation of the student. A limited number of scholarships is available.
ETH Zürich: see the "Financial Aid office" website.
École polytechnique: see the IP-Paris website (tab "Admissions"). A limited number of scholarships is available for students who plan to continue with a PhD in one of the labs hosted by École polytechnique; please visit the PhD program web page for more information.