Venice supports multiple languages, in two senses:
Model responses: language support depends on the model you use. To check a model's language capabilities, open the model selector and view that model's details.
The Venice interface is available in: English, German, Spanish, French, Italian, Korean, Portuguese (Brazil), Japanese, Chinese (Simplified), and Chinese (Traditional).
To change the interface language: toggle the sidebar on the left, click your profile in the bottom left, click Settings, go to General, and scroll to Language.