The main advantage is that a Stellerator can be continuously operated while a Tokamak only works in pulsed operation.

The complex design of a Stellerator's magnectic coils essentially avoid the need for a transformer as it is being used in a Tokamak. The transformer is the reason why a Tokamak can only be operated in pulsed mode. However, there is ongoing research to achieve continuous operations e.g. by means of high-frequency waves.

Much better explanation here: https://www.ipp.mpg.de/14869/tokamak

I am complete layman here. Still from what I read the whole point of stellarator is to be same as tokamak except you use CAD to make it twist in the same way plasma naturally would twist, to make it easier to keep the plasma in the path you want.