Hello aspirant, as you mentioned that your rank in IIIT DELHI MERIT LIST is 8156.

This refers to the ranking released by IIIT Delhi, taking into account the JEE Mains Rank, as well as the Bonus Marks(awarded by IIIT Delhi) some students are eligible for.

They create their own Merit List, which is based on JEE Rank only, but the difference arises due to only one reason according to me, which is the Bonus Marks.

They give bonus marks to people who've have excelled in extra-curricular activities like Sports, etc. So that's why the IIIT-Rank is different. These Bonus marks are given on the basis of certain achievements the student might have had such as: National Olympiads(NSEC, INMO etc.) , KVPY, NTSE, FIDE ratings (chess) and many more.

These rankings comprise of students of both categories (1. Who have not applied for bonus Marks. 2. Who have applied for bonus Marks).

After combining both the above categories, these rankings are released, and admission is given to students on its basis.

All the best !