Under the new structure, each meeting will feature eight 'Diamond+' disciplines - selected events that offer enhanced prize money - increasing the number of events in which athletes can compete for the highest payouts.
The number of Diamond+ disciplines will double from four to eight at all meetings.
The eight disciplines at each meeting will include two sprint or hurdles events, two long- or middle-distance races, two field events, and two other disciplines, all equally distributed between male and female athletes.
"This new structure allows athletes from a wider range of disciplines to increase their earnings in 2026, while also guaranteeing gender equality," organisers said in a statement.
Athletes will be able to earn up to $20,000 (£14,000) at Diamond League meetings and up to $60,000 (£44,200) in the final, the highest individual rewards in the series' 17-year history.
The basic level of individual prize money will remain unchanged, with competitors able to earn up to $10,000 (£7,300) at series meetings and up to $30,000 (£22,100) at the final.
The 2026 Diamond League season will begin on May 16th in Shanghai/Keqiao and culminate with a two-day final in Brussels on September 4th-5th.