Will GTA 6 have cheat codes?
The direct answer
No cheat list exists yet, but expect them. Every mainline GTA has shipped with single-player cheats, and GTA 6 will almost certainly continue that.
Rockstar hasn’t published any GTA 6 cheats — they’re typically revealed or datamined at launch, not before. Cheats also only ever work in single-player; using them in GTA Online is not possible and gets accounts banned.
Given the series’ unbroken history of spawn-vehicle, weapon, wanted-level and weather cheats, GTA 6 is highly likely to include a single-player cheat set. We’ll catalog them when the game is out.