Comment by tutfbhuf

Just recently, I did a terminal latency test with Typometer for the following terminals, sorted by lowest latency:

  xterm (389-1) 
  alacritty (0.13.1-1)
  kitty-tuned (0.31.0-1)
  zutty (0.14-2)
  st (master 95f22c5)
  urxvt (9.31-4)
  konsole (24.02.0-1)
  kitty (0.31.0-1)
  wezterm (20230712.072601)
  gnome-terminal (3.50.1-1)
  xfce4-terminal (1.1.1-2)
  terminator (2.1.3-3)
  tilix (1.9.6-3)
  hyper (v3.4.1)

I only tested for software latency (monitor, keyboard and other hardware latency is not included in Typometer benchmarks). I ran the test on Arch Linux with Xorg + bswpwm without compositor. You can find the full results on by blog https://beuke.org/terminal-latency/.