CVT is Continuously Variable Transmission. Unlike Conventional Automatics, in CVT you don’t feel any jerks because by definition it has an infinite number of gears. No gear changing sensations, seamless transmission. Toyota has programmed their CVT to simulate 7 gears, to give the feel of normal driving experience, otherwise conventional CVTs are quite boring to drive. Programmed CVTs give normal automatics like engine revving sound but still no jerks while simulated gear shifting.
GLi comes in 1.3 AT
Altis comes in 1.6 AT
Altis Grande and Cruisetronic comes in 1.8 CVT.
CVT is better than conventional AT these days IMO