I cannot find a track length for Kali on the web, but the drop is only 20ft at the end of the ride according to
Disney's site (30ft if you believe wiki.) Compare that to Infinity's record-breaking 40 ft drop.
The ride time is about 4.5 minutes for Kali, (similar to infinity's 4 min time,) and that includes Kali's long and slow 90 ft incline at the beginning. Infinity will have a quicker incline with the elevator lift, so that leaves a lot more time for action as compared to Kali.
Kali does allow for 20 rafts at once, whereas Infinity is 14 at a time. I'm sure a big part of the difference is how much space Kali's low angle lift is vs Infinity's quick elevator. Kali can hold several boats on its 90 ft long lift hill alone, vs Infinity's only 1 at a time on the elevator.
So, I'm guessing Kali is longer by distance, but a good chunk of that is a slow moving incline at the start. Both rides have similar ride times, so expect Infinity Falls to be a more exciting ride all the way through.
Bri, can you add some of the new info like min height requirement to the main post stats: