DeepL Launches Voice API for Real-Time Multilingual Support

DeepL, a global leader in AI-driven language technology, has announced the launch of its new DeepL Voice API, a solution designed to bring real-time voice transcription and translation into business applications. The new API allows developers to embed multilingual voice capabilities directly into their platforms, helping organizations communicate more effectively across languages.

The DeepL Voice API enables businesses to stream live audio and instantly receive accurate transcriptions in the original language, along with translations into as many as five additional languages. This real-time capability is built to deliver smooth, natural conversations, reducing friction for users and removing language barriers that often slow down interactions in global operations.

The solution is particularly relevant for organizations where voice communication is mission-critical. As a result, contact centers and business process outsourcing providers are expected to be among the first adopters. By integrating the API into existing systems, customer service teams can handle multilingual conversations without transferring calls or relying on written translations, making interactions faster and more seamless for both agents and customers.

Beyond live conversations, the DeepL Voice API also supports operational efficiency. Clear transcriptions and translations help supervisors monitor interactions more effectively, support quality assurance programs, and improve agent training. With consistent and accurate language data, organizations can perform fairer evaluations across regions and gain better insight into performance gaps, while reducing call durations, repeat contacts, and misunderstandings caused by language limitations.

According to Gonçalo Gaiolas, Chief Product Officer at DeepL, customer service interactions are often high-stakes moments where communication challenges can quickly lead to frustration. By equipping agents with real-time multilingual tools, companies can turn customer support into a strategic advantage, improving satisfaction while reducing the operational burden of call transfers and alternative workarounds.

From a business perspective, the DeepL Voice API allows organizations to hire based on problem-solving ability rather than language fluency, expand their talent pool, and manage costs more effectively. It also strengthens service continuity during nights, weekends, or peak periods when specialized language agents may be unavailable. By offering two-way understanding through translated audio and on-screen transcription, agents can respond naturally and confidently, improving both efficiency and customer trust.

The launch also introduces a six-week early access program for voice-to-voice translation, scheduled to begin in mid-February. This upcoming capability will allow agents to listen to translated speech in real time while speaking their own language, further simplifying multilingual customer interactions.

The DeepL Voice API will be available to all DeepL API Pro customers starting February 2. Organizations interested in adopting the solution can access the API documentation or contact DeepL’s sales team to begin implementation.