Is gta online content available offline in story mode?

GTA Online functions as a distinct game mode from the single-player story campaign. The online component exists as a separate entry in the game's menu system and requires constant server connection to Rockstar's infrastructure. Story mode operates independently with its own save files and cannot access or utilize any GTA Online features, content, or progression while playing offline. The two modes share the same game world but maintain completely separate economies, characters, and progression systems.