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If trying to convert between variants of the same language (e.g. EN-US to EN-GB), please consider using the /write/rephrase API. Please see here for supported target languages for this use case.

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Translation source languages

  • ACE - Acehnese*
  • AF - Afrikaans*
  • AN - Aragonese*
  • AR - Arabic
  • AS - Assamese*
  • AY - Aymara*
  • AZ - Azerbaijani*
  • BA - Bashkir*
  • BE - Belarusian*
  • BG - Bulgarian
  • BHO - Bhojpuri*
  • BN - Bengali*
  • BR - Breton*
  • BS - Bosnian*
  • CA - Catalan*
  • CEB - Cebuano*
  • CKB - Kurdish (Sorani)*
  • CS - Czech
  • CY - Welsh*
  • DA - Danish
  • DE - German
  • EL - Greek
  • EN - English (all English variants)
  • EO - Esperanto*
  • ES - Spanish (all Spanish variants)
  • ET - Estonian
  • EU - Basque*
  • FA - Persian*
  • FI - Finnish
  • FR - French
  • GA - Irish*
  • GL - Galician*
  • GN - Guarani*
  • GOM - Konkani*
  • GU - Gujarati*
  • HA - Hausa*
  • HE - Hebrew
  • HI - Hindi*
  • HR - Croatian*
  • HT - Haitian Creole*
  • HU - Hungarian
  • HY - Armenian*
  • ID - Indonesian
  • IG - Igbo*
  • IS - Icelandic*
  • IT - Italian
  • JA - Japanese
  • JV - Javanese*
  • KA - Georgian*
  • KK - Kazakh*
  • KMR - Kurdish (Kurmanji)*
  • KO - Korean
  • KY - Kyrgyz*
  • LA - Latin*
  • LB - Luxembourgish*
  • LMO - Lombard*
  • LN - Lingala*
  • LT - Lithuanian
  • LV - Latvian
  • MAI - Maithili*
  • MG - Malagasy*
  • MI - Maori*
  • MK - Macedonian*
  • ML - Malayalam*
  • MN - Mongolian*
  • MR - Marathi*
  • MS - Malay*
  • MT - Maltese*
  • MY - Burmese*
  • NB - Norwegian Bokmål
  • NE - Nepali*
  • NL - Dutch
  • OC - Occitan*
  • OM - Oromo*
  • PA - Punjabi*
  • PAG - Pangasinan*
  • PAM - Kapampangan*
  • PL - Polish
  • PRS - Dari*
  • PS - Pashto*
  • PT - Portuguese (all Portuguese variants)
  • QU - Quechua*
  • RO - Romanian
  • RU - Russian
  • SA - Sanskrit*
  • SCN - Sicilian*
  • SK - Slovak
  • SL - Slovenian
  • SQ - Albanian*
  • SR - Serbian*
  • ST - Sesotho*
  • SU - Sundanese*
  • SV - Swedish
  • SW - Swahili*
  • TA - Tamil*
  • TE - Telugu*
  • TG - Tajik*
  • TH - Thai
  • TK - Turkmen*
  • TL - Tagalog*
  • TN - Tswana*
  • TR - Turkish
  • TS - Tsonga*
  • TT - Tatar*
  • UK - Ukrainian
  • UR - Urdu*
  • UZ - Uzbek*
  • VI - Vietnamese
  • WO - Wolof*
  • XH - Xhosa*
  • YI - Yiddish*
  • YUE - Cantonese*
  • ZH - Chinese (all Chinese variants)
  • ZU - Zulu*
* These languages only work with the quality_optimized model or when no model is specified. They are not compatible with requests that specify the latency_optimized model. These languages do not support glossaries or formality.

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Translation target languages

  • ACE - Acehnese*
  • AF - Afrikaans*
  • AN - Aragonese*
  • AR - Arabic
  • AS - Assamese*
  • AY - Aymara*
  • AZ - Azerbaijani*
  • BA - Bashkir*
  • BE - Belarusian*
  • BG - Bulgarian
  • BHO - Bhojpuri*
  • BN - Bengali*
  • BR - Breton*
  • BS - Bosnian*
  • CA - Catalan*
  • CEB - Cebuano*
  • CKB - Kurdish (Sorani)*
  • CS - Czech
  • CY - Welsh*
  • DA - Danish
  • DE - German
  • EL - Greek
  • EN - English (unspecified variant for backward compatibility; we recommend usingEN-GB or EN-US instead)
  • EN-GB - English (British)
  • EN-US - English (American)
  • EO - Esperanto*
  • ES - Spanish
  • ES-419 - Spanish (Latin American)
  • ET - Estonian
  • EU - Basque*
  • FA - Persian*
  • FI - Finnish
  • FR - French
  • GA - Irish*
  • GL - Galician*
  • GN - Guarani*
  • GOM - Konkani*
  • GU - Gujarati*
  • HA - Hausa*
  • HE - Hebrew
  • HI - Hindi*
  • HR - Croatian*
  • HT - Haitian Creole*
  • HU - Hungarian
  • HY - Armenian*
  • ID - Indonesian
  • IG - Igbo*
  • IS - Icelandic*
  • IT - Italian
  • JA - Japanese
  • JV - Javanese*
  • KA - Georgian*
  • KK - Kazakh*
  • KMR - Kurdish (Kurmanji)*
  • KO - Korean
  • KY - Kyrgyz*
  • LA - Latin*
  • LB - Luxembourgish*
  • LMO - Lombard*
  • LN - Lingala*
  • LT - Lithuanian
  • LV - Latvian
  • MAI - Maithili*
  • MG - Malagasy*
  • MI - Maori*
  • MK - Macedonian*
  • ML - Malayalam*
  • MN - Mongolian*
  • MR - Marathi*
  • MS - Malay*
  • MT - Maltese*
  • MY - Burmese*
  • NB - Norwegian Bokmål
  • NE - Nepali*
  • NL - Dutch
  • OC - Occitan*
  • OM - Oromo*
  • PA - Punjabi*
  • PAG - Pangasinan*
  • PAM - Kapampangan*
  • PL - Polish
  • PRS - Dari*
  • PS - Pashto*
  • PT - Portuguese (unspecified variant for backward compatibility; we recommend using PT-BR or PT-PT instead)
  • PT-BR - Portuguese (Brazilian)
  • PT-PT - Portuguese (all Portuguese variants excluding Brazilian Portuguese)
  • QU - Quechua*
  • RO - Romanian
  • RU - Russian
  • SA - Sanskrit*
  • SCN - Sicilian*
  • SK - Slovak
  • SL - Slovenian
  • SQ - Albanian*
  • SR - Serbian*
  • ST - Sesotho*
  • SU - Sundanese*
  • SV - Swedish
  • SW - Swahili*
  • TA - Tamil*
  • TE - Telugu*
  • TG - Tajik*
  • TH - Thai
  • TK - Turkmen*
  • TL - Tagalog*
  • TN - Tswana*
  • TR - Turkish
  • TS - Tsonga*
  • TT - Tatar*
  • UK - Ukrainian
  • UR - Urdu*
  • UZ - Uzbek*
  • VI - Vietnamese
  • WO - Wolof*
  • XH - Xhosa*
  • YI - Yiddish*
  • YUE - Cantonese*
  • ZH - Chinese (unspecified variant for backward compatibility; we recommend using ZH-HANS or ZH-HANT instead)
  • ZH-HANS - Chinese (simplified)
  • ZH-HANT - Chinese (traditional)
  • ZU - Zulu*
* These languages only work with the quality_optimized model or when no model is specified. They are not compatible with requests that specify the latency_optimized model. These languages do not support glossaries or formality.

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Text improvement languages (DeepL API for Write)

As of April 2025, supported languages for text improvement (DeepL API for Write) have not yet been added to the /languages endpoint; we’ll be extending the /languages endpoint in the near future to include this information.
  • DE (German)
  • EN-GB (British English)
  • EN-US (American English)
  • ES (Spanish)
  • FR (French)
  • IT (Italian)
  • PT-BR (Brazilian Portuguese)
  • PT-PT (Portuguese)
For the /write/rephase endpoint, writing_style and tone currently work in DE, EN-GB, and EN-US.