Swiss challenge model is a flexible method of giving contracts which can be used in PPP as well as non-PPP projects.
In this, one bidder is asked by the government to submit the proposal for the project which is put in public domain.
Afterwards, several other bidders submit their proposals aimed at improving and beating the original (first) bidder— finally an improved bid is selected (called counter proposal).
If the original bidder is not able to match the counter proposal, the project is awarded to the counter bidder. Government has made it an online method.
