CAE certifies C1-level English — advanced enough for university study or skilled professional work — through a 235-minute, four-paper exam that blends objectively-scored Reading, Use of English, and Listening with human-examiner-graded Writing and a paired, face-to-face Speaking interview. What sets it apart structurally from IELTS or TOEFL is that the certificate never expires: once earned, a score of 180 or above (out of a 160-210 range for this level) stands for life, even though many institutions still prefer a recent result as a fresher signal. It's recognized by over 3,000 universities, employers, and government departments and more broadly by over 25,000 organizations across 130-plus countries, with particularly strong standing across the UK and Europe. Against its own sibling exam CPE, CAE sits one CEFR level lower at C1 rather than C2 — making it the more commonly required minimum, while CPE remains reserved for proving a level of mastery few programs explicitly demand.