No, GTA 5 is not cross-platform. Despite Rockstar releasing several versions of the game across various storefronts and systems, you can only play GTA 5 with other players on the same system as you.

Grand Theft Auto Grand Theft Auto 5 has now sold an incredible 220 million copies, with roughly 20 million in the last year alone Grand Theft Auto Take-Two tries to hide GTA 6 websites behind its back ...