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Filmi Score
Good
4 reviews · provisional
62
2 very good1 good1 mixed
What the critics say
Critics call O2's medical research premise fresh and praise Ashika Ranganath's performance, but most find the romantic subplot unnecessary, the twists predictable or hard to swallow, and pacing uneven, making it a decent one-time watch.
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Summary
O2 (2024, Kannada) has a Filmi Score of 62 from 4 critic reviews, and streams on Tubi Tv in the US.
A brilliant doctor battles her childhood trauma, to revive the dead with an illegal intravenous oxygen drug. Her quest challenges the boundaries of science, spirituality, and love. Will she succeed or lose everything!
Where to watchAvailability by JustWatch · some watch links pay filmi.ai a small commission; it never changes what we show or how we score.
A brilliant doctor battles her childhood trauma, to revive the dead with an illegal intravenous oxygen drug. Her quest challenges the boundaries of science, spirituality, and love. Will she succeed or lose everything!
O2 (2024, Kannada) has a Filmi Score of 62 from 4 critic reviews, and streams on Tubi Tv in the US.
Where to watch
Availability by JustWatch · some watch links pay filmi.ai a small commission; it never changes what we show or how we score.
Varun praises O2 as a fresh, subtly written medical-research film with strong writing, a good Ashika Ranganath performance and pleasant songs,… Watch it there →
Likhith calls O2 a fresh, well-researched medical concept with strong music, cinematography and a standout Ashika Ranganath performance, but finds… Watch it there →
Pranati finds O2's premise — an intelligent young doctor researching post-cardiac-arrest revival — intriguing, but objects that the story… Read it there →
Derived by Filmi
42
How this number was made. We read every review and derive a 0–100 reading from each — including where the critic printed a number, which stays first on its row, because it’s theirs. The Filmi Score is the mean of 4 readings; 1 of those rows also carry the critic’s own rating, shown beside ours. Rubric v2.1, computed 26 Oct 2026. Any critic can ask us to remove a derived reading.
PublishedStated in videoDerived by FilmiNo score
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O2: quick answers
Box office, where to watch and what critics said — from the same data as the page.
Where can I watch O2?
O2 is streaming on OTT: Prime Video (India and the UK), Tubi Tv (the US and Canada), Plex (the US) and Darkroom (the US). It can also be rented or bought on Apple TV (the UK), Amazon Video (the UK) and Google Play Movies (the UK). Availability comes from JustWatch and is checked every Friday.
What did critics say about O2?
O2 has a Filmi Score of 62 (Good), the mean of 4 readings of critic reviews, one per review. The score is provisional until at least five reviews are read. Readings run from 42 (Deccan Herald) to 77 (Cinema with Varun). Every review and how it was scored is listed below.
What readers say
The Audience Score appears once three readers’ reviews have been read under the rubric — built from what people write, never from the rating numbers.
