Dear aspirant,
It is very difficult to predict whether you would get into AIIMS or not if you have scored below 1000 because the seats are very less in aiims and in that also reservation comes into play so the chances are very less until and unless you score exceptional.
Although various factors are considered while deciding the cut offs like number of candidates appearing in the examination, number of vacant seats in college, previous years cut offs and difficulty level of the paper.
To get complete information you can check out the link given below -
https://medicine.careers360.com/neet-college-predictor?utm_source=qna&utm_medium=neet_cp
Result | Eligibility | Application | Exam Pattern | Admit Card | Preparation Tips | Cutoff
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile