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Supertext AG (Zürich, CH)

Supertext

Swiss AI translator with its own translation LLM for 28 languages, including Dutch, with optional review by professional translators from CHF 5.70. You translate text and editable files in the browser, via Office add-ins or through the API.

Go to the website Supertext alternatives
Shared spot11of 19 professional tools with a GDPR profileOur summary of what the provider itself publishes about your data: whether the data is stored in the EU (2 points), whether there is a certification or GDPR guarantee (1) and whether the provider is established in the Netherlands or the EU (1). 3 or 4 points is Strong, 2 Good, 1 Limited, 0 Unknown. How we measure in translation & localisation
GDPR: Limited
  • Provider based outside the EU
  • Publishes certification/GDPR safeguards

Each block is a professional tool in translation & localisation, with the strongest GDPR profile on the left. 8 professional tools, like Supertext, have a limited profile: they share this spot. Click through for that tool.

PriceFree; Essential from CHF 9.90/monthFree at no cost; Essential CHF 9.90/month; Advanced CHF 24.90/month (17% discount annually); Enterprise on request
Free trialYes
Based inZürich, CHOutside the EU
ModelNot publicProprietary translation model: an in-house LLM focused on translation (according to the provider); hosting exclusively in Switzerland (according to the provider); on paid plans, source and target texts are deleted immediately after translation, while on the free plan data may be used to improve the language models (according to the provider); ISO 27001, ISO 9001, ISO 17100 and ISO 18587, GDPR- and nDSG-compliant (according to the provider); SOC 2 and data processing agreement: sought, not published

Last checked: 4 November 2026 · How we check

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What it does

AI translation in 28 languages, including Dutch
Translating editable files
Verification by professional translators
Glossaries and Microsoft Office add-ins
Translation API and Translation MCP
Style guides and own AI models (Enterprise)
Hosting as SaaS, private cloud or on-prem

Comparable in translation & localisation

AmberScriptfrom €10 per hour (pay-as-you-go)…Crowdinfree planPhrase Localization PlatformFreelancer $27/momemoQ translator pro€ 44 per licence per month or €…RedokunProject Pass € 295 one-off (50.0…Weglotfree up to 2,000 words
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Supertext compared

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Underlying model

Proprietary translation model: an in-house LLM focused on translation (according to the provider); hosting exclusively in Switzerland (according to the provider); on paid plans, source and target texts are deleted immediately after translation, while on the free plan data may be used to improve the language models (according to the provider); ISO 27001, ISO 9001, ISO 17100 and ISO 18587, GDPR- and nDSG-compliant (according to the provider); SOC 2 and data processing agreement: sought, not published. Many tools build on a large model from, for example, OpenAI or Anthropic. If in doubt, ask for the data processing agreement: it states where your data goes.

GDPR check for translation & localisation

Questions about Supertext

AI for translation & localisationAI for marketing
Which AI model does Supertext use?
The maker of Supertext does not disclose which AI model sits underneath. Proprietary translation model: an in-house LLM focused on translation (according to the provider); hosting exclusively in Switzerland (according to the provider); on paid plans, source and target texts are deleted immediately after translation, while on the free plan data may be used to improve the language models (according to the provider); ISO 27001, ISO 9001, ISO 17100 and ISO 18587, GDPR- and nDSG-compliant (according to the provider); SOC 2 and data processing agreement: sought, not published.
How much does Supertext cost?
Free free of charge; Essential CHF 9.90/month; Advanced CHF 24.90/month (17% discount when billed annually); Enterprise on request. Check the current price on the provider's website; rates often change.
Who is Supertext for?
Supertext is aimed at translation & localisation, marketing. It suits work such as creating a first translation draft and machine pre-translation (post-editing), keeping terminology and house style consistent with term bases and translation memories, and rolling out and maintaining websites, apps and software in multiple languages.
What should I watch out for with AI in translation & localisation?
Client source documents often contain personal data or trade secrets: never use the free consumer version of a translation tool for client material. Require a data processing agreement, check that your texts are deleted after translation and not used for training, and choose EU hosting where possible. Many translation contracts and NDAs with end clients prohibit passing texts to third parties without consent, so document which MT engine you use. And stay responsible for the content: AI translations read fluently but can reverse figures, negations and legal nuances.
Next stepAll 31 options for translation & localisationProfessional tools and general assistants side by side, on GDPR profile, price and quality.

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