Sixth generation fighters are the next generation of fighter aircraft, currently in development by several nations. These fighters are expected to have advanced capabilities such as artificial intelligence, improved sensors, and stealth capabilities, enabling them to operate in highly contested airspace. Some of the major sixth generation fighter projects include the United States' Next Generation Air Dominance (NGAD) programs, which are being developed by both Lockheed Martin and Northrop Grumman, the Global Combat Air Programme (GCAP) being developed by Italy, Japan and the UK, the European Future Combat Air System (FCAS) being developed by France, Germany and Spain, and the Russian PAK DP. These fighters are expected to become the backbone of air power for the coming decades, providing unparalleled capabilities for their respective countries.

Resolves when an aircraft is reported as in service by mainstream media, and this report isn't contested by other reports.

Chinese and other projects can be added once they are announced. Please don't create generic 'country' options.

Added Chinese programmes: J-36 seen over Chengdu and J-50 seen over Shenyang. Neither of these names are confirmed and the existence of these planes is barely officially acknowledged.