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In active development
  • Creation of an admin API, making it possible to eventually e.g. retrieve usage analytics and manage API keys programmatically
  • Add more events to audit logs for Pro API customers (API key management, cost control and usage limit changes)
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Q2 2025
  • Added support for new language: TH (Thai). For this release, this language will only support text translation. See here for more information.
  • Added support for new languages: HE (Hebrew) and VI (Vietnamese). For this release, these languages will be available for Pro v2 API in next-gen models only. See here for more information.
  • Added improvements to API glossaries, including the ability to edit glossaries and create multilingual glossaries. Learn more here.
  • Improvements to the /usage endpoint for Pro API customers (API reference)
  • Improvements to key-level usage reporting, making it possible to pull reports with a custom date range and to group data by calendar day. Learn more here.
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Q1 2025
  • Added support for API key-level usage limits, making it possible to set a character limit at the API key-level. Learn more here.
  • DeepL API for Write is generally available to Pro API customers, making it possible to improve texts in (at the time of release) 6 different languages. Learn more and get started here.
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Q4 2024
  • Added the model_type parameter, allowing users to translate text with DeepL’s “next-gen” translation models. More information can be found here.
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Q3 2024
  • Added the show_billed_characters parameter for text translation, allowing users to optionally include the number of billed characters in the API response. Learn more here.
  • Added support for a new language for text translation: ZH-HANT (Traditional Chinese). As of this initial release, document translation is not supported for Traditional Chinese. More information is available here.
  • An official Ruby client library, evolved from a community-written library by Daniel Herzog. You can download it here or find the source code on our GitHub page.
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Q2 2024
  • Added support for DOCX and PPTX document minification to the PHP client library, making it possible for users to translate documents that exceed DeepL’s file size limit due to embedded media. Learn more here.
  • Added support for API key-level usage reporting. More information is available in the multiple API keys guide.
  • Launched DeepL Pro in 165 new markets, bringing the total number of markets where DeepL Pro is available to 228. This means users with billing addresses in these markets can create DeepL Pro API and Free API subscriptions.
  • Added support for new glossary languages: DA (Danish), NB (Norwegian Bokmål), and Swedish (SV).
  • Moved the context parameter from alpha status to general availability. More information about the context parameter is available in the “Request body descriptions” table here.
  • Added support for SRT (srt) files in document translation.
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Q1 2024
  • Added support for multiple API keys in a single account for Pro API and Free API users. More information is available in the multiple API keys guide.
  • Added support for a new language for text translation: AR (Arabic). As of this initial release, document translation is not supported for Arabic. More information is available here.
  • Added support for Korean (KO) as a glossary language, increasing the number of supported glossary language pairs from 55 to 66.
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Q4 2023
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Q3 2023
  • Launched DeepL Pro in South Korea (blog post here). This means users with billing addresses in South Korea can create DeepL Pro API and Free API subscriptions.
  • Added support for Portuguese (PT), Russian (RU), and Chinese (ZH) as glossary languages, increasing the number of supported glossary language pairs from 28 to 55.
  • Added support for JSON-encoded requests for all remaining endpoints (note that document upload for document translation still requiresmultipart/form-data).
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Q2 2023
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Q1 2023
  • Released an official DeepL Custom Connector for Microsoft Power Automate.
  • Added support for glossaries in any combination of two languages from the following list: EN (English), DE (German), FR (French), IT (Italian), PL (Polish), NL (Dutch), ES (Spanish, JA (Japanese). This represents an increase from 8 to 28 supported glossary language pairs.
  • Added XLIFF as a document translation format (note that only documents from version 2.0 are supported, and there is no support for the legacy 1.2 format).
  • Added support for new languages for text and document translation: KO (Korean) and NB (Norwegian Bokmål). Blog post here.
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Q4 2022
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Q3 2022
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Before Q3 2022