What does GM category mean in KCET?

GM stands for General Merit — the open category. Seats in the GM pool are allotted purely by KCET rank, with no reservation, and any candidate can be considered under GM regardless of caste. Your own reserved category (if any) is considered separately and in addition, so being in a reserved category never removes your GM eligibility. A GM closing rank is the last rank admitted in the open pool for that college and branch. Always confirm category rules on the official KEA site.