Languages & formats
Hezo's web app runs in twelve languages. You pick one on the very first screen, before anything else is set up, and Hezo guesses it from your browser so the screen usually arrives already answered.
Supported languages
English, Deutsch (German), Français (French), Español (Spanish), Italiano (Italian), Português do Brasil (Brazilian Portuguese), Nederlands (Dutch), Polski (Polish), Svenska (Swedish), 简体中文 (Simplified Chinese), 日本語 (Japanese), and 한국어 (Korean).
European Portuguese falls back to the Brazilian catalog, and traditional-script Chinese falls back to Simplified - closer than English in both cases, but not a perfect match.
Where you set it
On first run, ahead of creating your master key. This comes first on purpose: every screen after it is already the product, and reading your master key instructions in a language you don't speak is a bad way to start. See First-run setup.
After that, in Settings -> Languages & formats.
While you are signed out - at the unlock screen after a restart, or at the sign-in screen - there is a globe button in the top right, because those screens have no menu to reach Settings through. Changing the language there applies to that browser only and tells you so; sign in to change it for everyone.
It is a setting for the whole instance
The language is global, not per person. Everyone using this Hezo instance sees the same language, and only an admin can change it. That matches how the rest of the instance-level settings work.
Date and currency formats
Language, date format, and currency format are three separate choices on the same screen, because they genuinely come apart: plenty of people want German prose with ISO dates.
Date format sets the order of the fields:
| Option | Example |
|---|---|
| Day first | 29/07/2026 |
| Month first | 07/29/2026 |
| Year first (ISO) | 2026-07-29 |
| Day, month name, year | 29 Jul 2026 |
Month names always follow your language, not the date format - so a German instance on day-first dates reads "29 Jul 2026" with the German abbreviation, not the English one.
Currency format sets how amounts are punctuated:
| Option | Example |
|---|---|
| $1,234.56 | period for decimals, comma for thousands |
| 1.234,56 $ | comma for decimals, period for thousands |
| 1 234,56 $ | comma for decimals, space for thousands |
This changes presentation only. Hezo always bills in US dollars, because that is what the AI model providers charge in, and budgets are stored in dollars. There is no currency conversion and no exchange rate anywhere in Hezo - picking a European format does not turn your spend into euros, it only writes the same dollar amount the way you are used to reading it.
Each option previews itself with a real value, so you can pick by looking rather than by
decoding a pattern like DD/MM/YYYY.
What is not translated
Hezo translates its own interface. It does not translate your content or your agents' output - task titles and descriptions, agent comments, run logs, CEO chat replies, documents, and project summaries all stay in whatever language they were written in.
If you want your agents to work in a particular language, tell them so: set it in the project's custom prompt or an agent's instructions. That is a separate thing from the interface language, and deliberately so - a German-speaking operator may still want their code comments and commit messages in English.
The documentation is English-only.