I spend most of my time launching and closing terminals around the system. So it's useful to know how much it take to launch and close it.
With time and bash its easy to check.
time kitty -- sh -c "exit"
time alacritty -e sh -c "exit"
time st -e sh -c "exit"
time urxvtc -e sh -c "exit"kitty goes around 0.27-0.30 seconds
alacritty goes around 0.15-0.17 seconds
st goes around 0.051-0.055 seconds
urxvt with the daemon(urxvtd and urxvtc) goes around 0.010 seconds
The fastest terminal is urxvt with the daemon urxvtd.
To test with different terminals use the speed.sh script.