DAPA issued a request for proposals on 21 August for a 14-month Korean Next-Generation Fighter Concept Study. The envelope is small on purpose about KRW 900 million, roughly $650,000, to define an operational concept, compare configurations and write a technology roadmap. Bids are due 1 October. The 2026 budget separately puts KRW 63.6 billion into next-generation fighter research on structures, materials and sensors. That is not a production order. It is Seoul refusing to let the KF-21 industrial machine go cold the moment Boramae enters service. KF-21 system development closed on 29 July after more than 1,600 test flights. First production jets are due to the air force in the second half of 2026. The next aircraft is already being imagined as a manned-unmanned combat system with broadband stealth and artificial intelligence. The pilot, if there is one in the cockpit, is expected to bring teammates that do not breathe.
The study asks industry to look at two shapes at once, a tailless stealth layout and an alternative control-surface arrangement, plus an internal weapons bay, low observability across L, S and X radar bands, and twin adaptive-cycle engines for supercruise. Those words put South Korea in the same vocabulary as American and European sixth-generation work. The doctrine underneath matters more than the artwork. Seoul wants a crewed fighter that can task uncrewed aircraft for reconnaissance, electronic warfare, deception and strike. KF-21 Block 3 or KF-21EX is already being discussed as a bridge internal bay, better stealth, sensor fusion and control of collaborative combat aircraft. The sixth-generation study is the step after the bridge.
Compare the neighbourhood and the split is clear. Japan is inside GCAP with Britain and Italy, a crewed sixth-generation core, shared industrial risk, and a timeline that lives or dies on three treasuries and one set of export rules. China is building mass and autonomy in public and in silence, the relevant fact for Seoul is not a model number but the assumption that uncrewed combat aircraft will arrive in quantity first. India is trying to finish AMCA as a fifth-generation design while flirting with French sixth-generation work and still hunting an engine it can control. Australia is not drawing a sixth-generation fighter of its own. It is flying Ghost Bat and treating loyal wingmen as the thing that can be fielded before a new manned jet exists. South Korea is trying to do both keep a sovereign crewed line after KF-21 and write unmanned teaming into the next airframe from the concept page.
Money tells the honesty of each path. Nine hundred million won buys paper and wind-tunnel hours, not a prototype. Sixty-three billion won buys materials science that may or may not survive a later down-select. GCAP and NGAD-class programmes spend that in a month of industry overhead. India’s AMCA debate is already about whether the country can afford two future aircraft at once. Australia’s bet is that software and a cheaper airframe beat a clean-sheet fighter this decade. Seoul’s bet is industrial continuity. If the KF-21 supply chain, test pilots and radar houses go idle, a sixth-generation start in the 2030s will cost a generation of people, not just steel.
The pilot may not fly alone. That sentence is now doctrine from Canberra to Daejeon. The unanswered question is who owns the teammates, the air force that trained the human, the company that trained the model, or the ally that licensed the datalink. South Korea has begun the drawing. The drawing is cheap. The teaming architecture is the programme.