It's noticeably faster than grep but I would say, in my experience anyways, only...

jaredmcateer on July 19, 2014 | parent | context | favorite | on: Ask HN: Little hacks that make your life easier?

It's noticeably faster than grep but I would say, in my experience anyways, only academically faster than ack. Both are so fast I can't really notice a difference when scanning my massive codebase.