Do IIIT Hyderabad students (BTech, DD, MTech, MS and PhD) regret not being one of the IITs?

No, I don’t think so. To be honest, my friend who is an IIIT Hyderabad student is much happier and more satisfied than his friends at IITs. He claims that he is in a better position compared to many of his CS and Non-CS counterparts at the IITs. IIIT Hyderabad certainly renders better opportunities in terms of research paper output, coding competitions performances, placements,  and Internships. So he is actually grateful for giving up his seats in IITs for a seat in IIIT. In fact, some of his friends had to go to non-CS branches in top IITs just because their ranks were not good enough for IIIT Hyderabad CS.

I hope this made it clear that people joining IIIT Hyderabad have no regret looking at their IIT counterparts whatsoever. If anything, they are grateful for the rare opportunity.