Officials said tickets will be charged at more than $175,000 per person, but further details are unclear.
The dinner hopes to boost foreign investment into one of Africa’s fastest growing economies.
Since coming to power last year, Mr Abiy has pushed for wide-scale economic reform in Ethiopia.
A video released by the prime minister’s has set out plans for the redevelopment of Addis Ababa, including an expansion of green spaces and retail areas.
Correspondents say Ethiopia likes to raise funds itself rather than rely heavily on foreign donors. Similar events have been arranged for economic investment and humanitarian relief.
Prime Minister Abiy sold his watch for $175,000 during a recent event for infrastructure development in Ambo, 100km (60 miles) west of Addis Ababa. About $14m was raised in total.