Pick a language from the switcher in the top bar (desktop), the More menu (mobile), or Settings → Interface language. The choice is saved to your account when you are signed in and to a cookie otherwise, and the page updates in place.
### The twelve
English · 中文 (Chinese) · Español · हिन्दी (Hindi) · العربية (Arabic, right-to-left) · Português · Français · 日本語 (Japanese) · 한국어 (Korean) · Deutsch · Italiano · Українська (Ukrainian).
### What is translated — honestly
Menus, navigation, the shell (Create / Watch, credits, sign in and out), the help assistant's chrome, and the common buttons. Help articles, anything the models generate, and the deep studio tool pages are in English. The switcher shows each language's coverage as a percentage, and the same sentence, in that language, next to it.
This is different from dubbing and subtitles, which cover thirty languages for the films themselves. Arabic sets the page to right-to-left.