Metacritic, with four ratings from selected critics, assigns a score of 82 out of 100, giving the album universal acclaim. James Christopher Monger, from AllMusic, gives the album 4/5 stars, and stated that Phantom Anthem delivers "a balanced, brutal, and almost relentlessly efficient 11-track set that deftly utilizes every inch of sonic space to its advantage". NewNoiseMagazine offers some additional positive feedback, praised the newest album, stating "It's true, classic metalcore, with sometimes lightning fast feeling guitar work underlying harsh vocals. There are not really any clean vocals on this release, but that's not a drawback...it doesn't push the genre – other bands can do that – instead, it just perfects it."
August Burns Red received a Grammy nomination for their song "Invisible Enemy" under the "Best Metal Performance" category.