DeepL is a Speech Translation company founded in 2017 and based in Cologne, Germany. It has raised $550M in total funding, most recently a Series C in 2024 at a $2B valuation.
| Date | Stage | Amount | Valuation | Lead investors |
|---|---|---|---|---|
| May 22, 2024 | Series C | $300M | $2B | Index Ventures |
| Jan 11, 2023 | Series B | $100M | $1B |
| IVP |
| Nov 18, 2018 | Series A | — | — | Benchmark, btov Partners |
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The core neural machine translation engine supporting 30+ language pairs, widely regarded as the most accurate commercially available translator. Used by enterprises for document translation, glossary-driven localization, and API-based text translation at scale. Available as a consumer product, browser extension, and enterprise API. Underpins DeepL's expansion into voice and writing AI as the accuracy benchmark against which DeepL Voice and DeepL Write are measured.
A real-time speech-to-speech translation product launched in 2024 and expanded in 2025, targeting multilingual business meetings and customer support. Processes spoken audio via WebSocket, returning transcriptions in the source language and translated text in up to five target languages simultaneously. The Voice API (GA February 2026) allows developers to embed the same real-time speech translation into their own applications, positioned as an accuracy-first alternative for enterprise communications platforms.
An AI writing assistant that improves grammar, tone, and phrasing for business communications in English and German, with additional language support rolling out. Integrated into the DeepL Pro workflow alongside translation for end-to-end language assistance. Targets knowledge workers and enterprise teams needing consistent, polished written output in non-native languages, differentiating from generic LLM writing tools via DeepL's language-accuracy focus.