It depends on which course you are choosing to pursue.
Hope this provides some clarity about the admission process at IIIT Hyderabad.
IIIT Hyderabad requires a good JEE score for admission. A score of 250 or more should be good enough. After that, you can join IIT Hyderabad during the process of counseling.
Lateral Entry:
IIT Hyderabad allows a provision for later admission for dual degree courses in IIIT. To opt for that provision, you will need to complete your second year of B.Tech from any college in CS/IT or ECE/ETCE/EIE/EEE and then apply for the provision.
Student Intake:
They will conduct an exam and then the students who are selected will be called up for interviews. There are only 15 seats in every branch. That is, there are a total of 30 seats, 15 in CS and 15 in ECE are available for lateral admissions.
There are other ways to get admission to undergraduate courses at IIIT Hyderabad. To know more visit the official website.