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Size limits

Names using only ASCII characters can be up to 1024 characters long; names with multi-byte characters hold fewer.

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Content rules

  • Terms are case-sensitive
  • Duplicate terms within a list are not allowed (comparison is case-sensitive)
  • Terms must not be empty
  • Terms must not contain C0 or C1 control characters (including tabs \t or newlines \n within a term)
  • Terms must not contain leading or trailing whitespace

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Availability

Spoken Terms are available on all plans that include the DeepL Voice API, for all DeepL Voice languages. To check a language programmatically, call GET /v3/languages?resource=voice and look for the spoken_terms feature key on the source language.