In the present scenario, admissions to AIIMS and JIPMER Pondicherry are conducted through NEET UG. Earlier, the institutions conducted their own entrance exams to admit students into their MBBS program. 

Now coming to your question, the authorities won’t reward you with any money for securing AIR 1 in the entrance exam. However, your name will be submitted to the Limca Book of records, and you’ll receive prize money from there. 

Another way is that unfortunately, plenty of coaching institutes approach NEET toppers to use their names in billboards and coaching materials’ back covers. These institutes will pay you to pretend that you studied for your NEET exam from them. It is possible that book brands will pay you for positive feedback. 

These are the multiple ways that toppers gain popularity and money after NEET results. However, make sure to keep your head down and work even harder once you achieve this milestone. Even though you won't receive any cash prize from the authorities, you’ll 

study at AIIMS New Delhi, or any other topmost medical college in India for a minimal fee.