According to this (at least 11 months old) benchmark, Ghostty has the worst input latency across all contenders: https://github.com/moktavizen/terminal-benchmark?tab=readme-...

More benchmarks from 4 months ago: https://news.ycombinator.com/item?id=45253927

14 months old discussion of input latency in Ghostty with comments from the author: https://github.com/ghostty-org/ghostty/discussions/4837

I have been using computers and terminal for a long time, and this kind of comment makes me think I must have missed a whole bunch of things which can be done with a terminal

Since people are mentioning latency I’ll mention throughput. Basically the idea is that you accidentally cat a large file to your terminal and we are measuring how much time it takes for the terminal to finish displaying it. This test generally favors GPU-accelerated terminals.

Ghostty performs very well on this regard, among the same league as Alacritty and Ptyxis.

on my machine, noticeable. I seriously tried it, but went back because I could notice a small end-end latency, between keypress and action. But I'm also 240hz user.