413
Days between the launch of GTA Online on PS3 (1 Oct, 2013) and when the mode launched for PS4 alongside the 1080p remaster (14 Nov, 2014).
sarwar says
“We had hopes for it, but we also knew it would take a huge amount of work – although, if anything we underestimated what it would take to create a regularly updated game at the level we all wanted it to be.”