Officials said the jets will be produced jointly by a foreign aircraft maker along with an Indian company under the recently-launched strategic partnership model which aims to bring in high-end defence technology to India.
Leading military aircraft producers Lockheed Martin, Boeing, Saab and Dassault are among the competitors which are likely to vie for the mega deal.
The IAF has been pressing for expediting the process to acquire the aircraft citing declining strength of its fighter squadron as some of the ageing jets are being phased out.
It is the first mega procurement initiative for fighter jets after the government scrapped the process to acquire 126 Medium Multi-Role Combat Aircraft (MMRCA) for the Indian Air Force around five years ago.
Instead, the NDA government, in September 2016, signed an Euro 7.87 billion (approx Rs 59,000 crore) deal with the French government for purchase of 36 Rafale twin-engine fighter jets.
The IAF was keen on a follow-on order of 36 additional Rafales. However, the government is yet to take a decision on it.