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Product copy localization into EU languages

Localize UI strings or marketing copy into several European languages at once, with glossary terms, length limits and notes for reviewers.

Mistral Le ChatLanguage & translationRuleStack original

Written for Mistral Large 4 (mistral-large-4, public preview) · Updated 2026-10-18

Note: Review and test before use. Provided as is, without warranty. See Terms.

Localize the strings below from [source language] into [target languages, e.g. German, French, Italian, Polish, Swedish].

Audience: [who, e.g. small-business owners using a mobile invoicing app]
Tone: [e.g. friendly, direct, informal "you" where the language allows]
Glossary (keep exactly or use the given translation): [term = translation per language, or "do not translate: [brand terms]"]
Length: each translation must be at most [N]% longer than the source; flag any that can't fit.
Keep placeholders like {name} and HTML tags unchanged.

Strings (key: text):
[key_1]: [text]
[key_2]: [text]

Return JSON: {"[language code]": {"[key]": "[translation]"}} followed by a short "Notes for reviewers" list (ambiguities, cultural issues, strings over the length limit).

Replace everything in [square brackets] with your own details.

Settings & parameters

• Model mistral-large-4 in public preview; Mistral says its training data spans 160+ languages, including every official EU language
• Structured outputs keep the JSON valid for your i18n pipeline

Variations

• Marketing transcreation: allow freer rewrites and ask for two options per language.
• Add a back-translation column so a non-speaker can sanity-check meaning.

Tips

• Always have a native speaker review legal, pricing and safety strings before release.