Is GTA 6 first person?
The direct answer
Unconfirmed. GTA 6’s trailers are all third-person, and Rockstar hasn’t confirmed a dedicated first-person mode.
GTA 5’s current-gen re-release added a full first-person mode, so precedent exists — but Rockstar hasn’t shown or confirmed one for GTA 6. Everything revealed so far is third-person.
A first-person option would fit the series’ recent direction, so it’s a reasonable expectation, but treat it as unconfirmed until Rockstar shows it.