Is it possible to play GTA Online using Xbox Game Pass?

Yes, it is possible to play GTA Online with an Xbox Game Pass subscription, as long as Grand Theft Auto V (GTA V) is available in the Xbox Game Pass library. GTA Online is included with GTA V; however, availability can change since games are periodically added and removed from the service. Additionally, an Xbox Live Gold membership is required to access online multiplayer features on Xbox consoles. Thus, if both subscriptions are active and GTA V is on the Game Pass roster, then full access to GTA Online is granted. It's always recommended to check the current Xbox Game Pass catalog for the most up-to-date game listings.