Starting from scratch, you will need to spend $27,012 dollars on AA flights to achieve Executive Platinum. There will be some arbitage if you fly with oneworld aliance members and other AA partners but you will be an Executive Platinum Lite (no choice benefits) unless you also fly 30 segments.

You would earn 200K RDM at a cost of 13.56 cents each.

Of course, there are non-flying ways to achieve Executive Platinum if you are interested in gaming subscription services, paying for throw-away hotel nights with buying LP at 2 cents a piece on the front & back end, using an AA credit card at whatever lost opportunity cost or paying surcharges to pay for large ticket items through third parties that can't normally be paid directly with a credit card such as taxes, rent, mortgages, insurance & medical.

The good news is that once you attain Executive Platinum, you only need to spend $18,182 to maintain it. Just rememer though, without 30 segments, no choice benefits.

James