On Playstation's game page for GTA Online it says that the free standalone version can be claimed only on PS5 console store. So its not free to claim for everyone from the

GTA11,500,000 for GTA members to spend in the PS5™ version of GTA Online

GTA+: Megalodon Shark Cash Card (PS5™)

GTA Online to be free on PlayStation this coming weekend

PS Plus Extra, Premium Games Will Be Playable Offline, But Will Require Weekly Validation

Digital PS5 Might Be Selling a Fraction of What the Physical Version Is : r/ PS5

PS Plus Members Lose 19 Games in May as Sony Drops PS Plus Collection

JAnimauxx Hyper Base Lbox Retro Game Console with Built in 4280 Top Games, Emulator console with 18 Emulators, 2TB Game Console HDD with LaunchBox Game System, Game Hard Drive for PC

Why does Playstation Plus exist? And why is it required to play some games even though I already bought the console and game? - Quora

Play Station 4 1TB HDD Only on Playstation PS4 Console Slim Bundle with Three Games: The Last of Us, God of War, Horizon Zero Dawn 1TB HDD Dualshock 4

Flagship Newest Play Station 4 1TB HDD Only on Playstation PS4 Console Slim Bundle with Three Games: The Last of Us, God of War, Horizon Zero Dawn 1TB

Reminder: GTA Online is available for free on the PS5 until June 14