As per the cutoff trends, you need to score around 150+ in the AIIMS entrance examination to get a seat at AIIMS Delhi. However, the required cutoff can’t be predicted beforehand. It changes each year depending on different parameters such as the difficulty level of the question papers, the number of applicants, etc.
AIIMS exam result is made from your cumulative percentile of the 2 slots of the exam. If you've scored 140–145, then you will get a rank around 36. It can ensure your entry without a doubt! My friends got AIR 13 at 152; AIR 19 at 148; and AIR 36 at 140.
The point is to score about 150+ to get a seat in AIIMS Delhi. If the exam is difficult, you'll get through with even 136. However, keep these in mind:
Even if you answer 160 correctly, but 30 wrong- then you're out of the game. Just be aware and alert.