Is GTA 6 cross-platform?
The direct answer
Unconfirmed. Rockstar hasn’t said whether GTA 6 or its online mode will support crossplay between PS5 and Xbox.
GTA 5 and GTA Online never had full crossplay, so there’s no guarantee GTA 6 will — but with only two platforms at launch, both current-gen, crossplay is more technically feasible than it used to be.
Until Rockstar details the online mode, treat cross-platform play and cross-progression as unconfirmed. The single-player campaign is self-contained per platform regardless.