Can-I-Bus garnered mixed reviews from music critics who generally admired Canibus' battle rap skills but criticised the production.

"[3] AllMusic's Stephen Thomas Erlewine found Canibus' aggro delivery tiring at times no matter the beat or subject but still gave credit for remaining impactful, concluding that "Unfortunately, those moments only occur sporadically over the course of this overlong debut, but when they do happen, it's easy to see what all the hype is about.

"[1] Wall of Sound's Oliver Wang felt that Wyclef Jean and Jerry Wonda's pop-sounding production didn't suit Canibus' tight flow and dark lyricism and preferred Clark Kent, Salaam Remi and LG as being a perfect match for his content, saying that "Like his West Coast counterpart, Ras Kass, Canibus proves that his rhyme rep isn't totally fabricated, but both artists blow their bets in trying to appeal to both underground and pop audiences.

"[9] Kevin Powell of Rolling Stone felt the album lacked more personal tracks and intellectual insight to clear up the lyrical venom found throughout, concluding that "In these smoke-filled last days of the 1990s, Canibus and Can-I-Bus are exactly what much of hip-hop has become: a lot of hype.

"[7] DJ Fatboy of RapReviews found the album a big disappointment, criticizing Canibus for trying to change his hardcore lyricist image in order to appeal to a mainstream audience, saying that "It's as if he's embarrassed to be known as a battle rapper.