The patent of the two-seat version was registered in 2023, but the latest comments from the plane’s manufacturer confirm it’s intended for exports.

Moscou a présenté pour la première fois des images de ce pourrait être une version biplace du Su-57, un avion de chasse furtif de cinquième

This jet will also be used as a trainer aircraft and a tactical control aircraft, Russian First Deputy Prime Minister Denis Manturov said

The patent of the two-seat version was registered in 2023, but the latest comments from the plane’s manufacturer confirm it’s intended for exports.