What unlocks gta online?

Grand Theft Auto Online serves as the dedicated online multiplayer component of Grand Theft Auto V. According to the verified evidence, it is explicitly described as 'the online component of Grand Theft Auto V,' which establishes that the base game GTA V is the prerequisite for accessing GTA Online. The online mode was released separately across multiple platforms starting from October 2013 for PlayStation 3 and Xbox 360, with subsequent releases on other platforms including PlayStation 5 and Xbox Series X/S in March 2022. While the evidence confirms GTA Online's relationship to GTA V, it does not specify additional requirements such as completing single-player missions or specific save file conditions needed for the initial unlock.