Hello Maddula

IIIT Kancheepuram is the better one in all aspects as compared to NIT AP because IIIT's curriculum is quite better and faculties are experienced of both ,IIIT's rating is a lot better for everything from infrastructure to placement and all because it has a better campus and infrastructure compared to NIT the fees for both are quite the same 5.30 lakhs for 4 years and the average salary for both is 5-7 lakhs per annum and NIT's highest salary is 13 lakhs per annum whereas IIIT's highest salary is 20 lakhs per annum so after looking at everything i will suggest you to choose IIIT Kancheepuram i will also attach a link where you can compare and check it yourself

https://www.careers360.com/compare-colleges

hope this helps you