I did an extensive comparison a while ago: https://blog.burntsushi.net/ripgrep/ --- It should still largely be pretty accurate (and ripgrep has only gotten faster).
More generally, if someone can find a non-trivial example of ag being faster then ripgrep, then I'd love to have a bug report. (Where non-trivial probably means something like "not I/O bound" and "not so short that the differences are human imperceptible noise.")
More generally, if someone can find a non-trivial example of ag being faster then ripgrep, then I'd love to have a bug report. (Where non-trivial probably means something like "not I/O bound" and "not so short that the differences are human imperceptible noise.")