What is the currency in gta online?

In Grand Theft Auto Online, all purchases, upgrades, and transactions are conducted with the virtual currency known as GTA$ (GTA dollars). Players earn GTA$ by completing missions, heists, races, and other activities. The currency is displayed in the game’s HUD and can be used to buy vehicles, real estate, weapons, and other in‑game items. While the game offers microtransactions that allow players to buy GTA$ with real money, the in‑game economy is driven entirely by earned GTA$.