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Multi-language: 4 locales, localized AI and dates

Studeia runs in 4 languages (pt-BR, en-US, es-ES, fr-FR) via next-intl: localized UI, API error messages, locale-aware dates and per-locale LLM prompts.

By Studeia Team 2026-05-31 4 min
Resposta curta

Studeia works in 4 languages — Portuguese, English, Spanish and French — so your institution can serve students in any market. The entire interface, API messages, date/number formatting and even the AI tutor prompts are localized, and students switch language in one click. In practice, the same platform serves classes in different languages, and the AI tutor answers in each student's language.

Coverage

  • UI: the entire interface across all five portals is translated; no hardcoded UI strings — everything goes through next-intl t().
  • API: 100+ API routes return localized error messages via getApiTranslations(request).
  • Dates & numbers: formatted with the active locale via useLocale() (client) / getLocale() (server) — never a hardcoded pt-BR.
  • LLM prompts: PromptTemplate has a locale field; loadPrompt() resolves with a locale cascade, and the tutor injects a language rule for non-pt-BR locales.

Quality gate

A CI script (check-translations.ts) validates key parity, placeholder parity and detects empty/untranslated entries across the four locale files. pt-BR is the locale of record; other locales fall back to it if a key is missing.

Docs in 4 languages

The public documentation itself is published in all four locales — Spanish and French pages are LLM-assisted translations of the pt-BR/en-US sources and carry an "AI-assisted translation" badge.

See also

FAQ

Which languages does Studeia support?

Four: Portuguese (pt-BR, the reference locale), English (en-US), Spanish (es-ES) and French (fr-FR). The full UI, API error messages and date/number formatting are localized via next-intl, and users can switch language with a locale switcher.

Does the AI tutor answer in the student's language?

Yes. LLM prompts are loaded per locale (loadPrompt with a locale cascade), and for non-pt-BR locales the tutor injects an explicit language rule so the whole response stays in the student's language. Dates and numbers are formatted with the active locale, never a hardcoded one.

Veja tambem

Multi-language: 4 locales, localized AI and dates