Which has better placements, ISI or CMI?

I would not pick between CMI and ISI by reputation alone. The real question is what kind of learning environment you want and what you plan to do after graduation.

That is where the difference between image and reality usually shows up.

The better comparison here is not 'which name is bigger' but 'which place matches my subject interest better'. CMI and ISI can lead to very different student experiences even if both are respected.

If you are confused between CMI and ISI, compare these points side by side:
- how focused the curriculum is
- whether you want research depth or broader flexibility
- internship and placement direction
- campus culture and peer group
- how sure you already are about your subject

That is the part I would double-check before taking any strong opinion seriously.

Students usually regret these decisions only when they choose the label and ignore the day-to-day fit. One place may look stronger publicly while the other may suit your goals much better.

For a student who already knows the exact subject they want, a specialised institute can be a better experience than a broader brand. For someone still exploring, the broader ecosystem often feels safer.

That is usually the point where personal fit becomes more important than brand value.

I would also check where recent graduates from each option actually ended up. That gives a much cleaner answer than generic online debates.