The Times of India rated 2 out of 5 stars stating "100 is an ambitious cop film with a not-so-bad story and almost convincing protagonist, but is marred by a far-stretched screenplay". Sify rated 2.75 out of 5 stars stating "Director Sam Anton’s 100 is a passable cop action entertainer which works mainly because of the engaging second half". The Hindu stated "Tamil filmmakers are in their ‘woke’ phase right now and what better than sexual harassment cases, which have been making headlines every other day? Filmmakers tend to normalise sexual assault by reducing it to a narrative device, and end up harassing the audience. The latest entrant being 100". IndiaGlitz rated 2.8 out of 5 stars stating "Go for this new take on cop work with  good performances by the cast and some interesting twists and turns". Cinema Express rated 2.5 out of 5 stars stating "Despite pacing issues and innumerable subplots, 100 is effectively wrapped up with minimal loose ends, and there's an overall sense of satisfaction at the end of 141 minutes". Firstpost rated 2.2 out of 5 stars stating "The first half of the film is just a built up for a long-drawn-out climax. If Anton had made the film from an engaging script and treated it as a realistic, investigative thriller without any over the top heroism, it would have worked". The Indian Express rated 2 out of 5 stars stating "Sam Anton takes too many cinematic liberties with 100, giving us an unrealistic twist that one can’t easily buy".