The DeepL Pro API (v2 endpoint only) also includes a text improvement function. This function is only available to users with a DeepL API Pro subscription type. The text improvement function provides the following functionality:
TextText to be improved. Only text encoded in accordance with the documentation is supported.
Target language

The language in which your improvements are provided can be one of the following:

  • DE (German)
  • EN-GB (British English)
  • EN-US (American English)
  • ES (Spanish)
  • FR (French)
  • IT (Italian)
  • PT-BR (Brazilian Portuguese)
  • PT-PT (Portuguese)
The text improvement function returns the following representation of the processing result:
TextThe improved text
Target languageThe target language specified by the user
Detected source languageThe detected source language of the text provided in the request.