Rotten Tomatoes, a review aggregator, reports that 16% of 134 surveyed critics gave the film a positive review; the average rating was 4.1/10. The site's critics consensus reads: "Insipid and mirthless, "I Spy" bares little resemblance to the TV series that inspired it." Metacritic assigned the film a weighted average score of 35 out of 100, based on 31 critics, indicating "generally unfavorable reviews". Audiences polled by CinemaScore gave the film an average grade of "B" on an A+ to F scale.