# Unicaption vs DeepL Voice: Live Translation Compared

> DeepL Voice, from the translation company DeepL, offers real-time speech translation aimed at meetings and conversations. Unicaption is a live captioning and translation copilot designed for professional interpreters: captions with side-by-side translation in 60+ languages, a custom dictionary with medical, legal, and government terminology, nothing joining the call, audio never stored, and transcripts deleted at session end. Check DeepL's current feature list; choose by whether you are a participant or an interpreter.

Published 2026-10-02 · The Unicaption Team · Human-readable version: https://unicaption.com/blog/unicaption-vs-deepl-voice.html

## Who each tool is designed for

As of this writing, DeepL Voice is positioned for multilingual meetings and conversations: people who don't share a language want to understand each other in real time, often through integrations with common meeting platforms. Check DeepL's current pages for supported languages, platforms, and plans, as these change.

Unicaption starts from the interpreter's workflow. It runs beside the session through the microphone or system audio, shows the original and the translation side by side, and treats the output as a reference for a human professional, not as the interpretation itself.

## Comparison

|  | DeepL Voice | Unicaption |
| --- | --- | --- |
| Built for | Participants in multilingual meetings and conversations | Professional interpreters and anyone needing live captions |
| Output | Translated speech or captions (check current options) | Original and translation side by side |
| Languages | Check DeepL's current list | 60+ with automatic language detection |
| Terminology control | Check current glossary features | Custom dictionary plus medical, legal, government terms |
| Runs where | Check supported platforms | Browser, macOS and Windows apps, Chrome extension; any platform via system or tab audio |
| Privacy approach | Review DeepL's current data terms | End-to-end encrypted, audio never stored, transcripts deleted at session end, never used to train models |
| Free option | Check current plans | 30 free minutes every week, no credit card |

## The questions an interpreter should ask

**1. Does it show me the source and the translation together?**
To catch an error, you need both. A translated stream alone can't tell you whether the number was misheard.

**2. Can I teach it my terms?**
Names, products, and jargon decide whether a session is usable. A dictionary you control matters more than a headline accuracy claim.

**3. What happens to the audio and transcript?**
Read the retention and training terms, and match them to your confidentiality duties. See [interpreter confidentiality and AI tools](/blog/interpreter-confidentiality-ai-tools.html).

**4. Does it need the host's cooperation?**
Tools that require integration with the meeting depend on admin settings you may not control.

## Where DeepL Voice may be the better fit

If a team wants everyone to follow a multilingual meeting in their own language, with no interpreter involved, and the organization is already on DeepL, a participant-facing tool built for that is a reasonable choice. It is not an interpreter, and neither is any machine translation tool: for high-stakes medical, legal, and immigration settings, qualified human interpreters remain the standard.

## Where Unicaption fits

- ✓ **A copilot for the interpreter:** live captions with side-by-side translation, so you can verify numbers, names, and terms at a glance
- ✓ **Works beside any call** without a bot or host permission
- ✓ **Custom dictionary** and built-in medical, legal, and government terminology
- ✓ **Nothing kept:** audio never stored, transcripts deleted at session end, never used for model training
- ✓ **Plans from $9/month** after the weekly free minutes

More context in [the best AI tools for interpreters](/blog/best-ai-tools-for-interpreters.html) and [computer-assisted interpreting tools](/blog/computer-assisted-interpreting-cai-tools.html).

## Frequently asked

**What's the difference between DeepL Voice and Unicaption?**
DeepL Voice is built to help participants understand multilingual meetings in real time. Unicaption is built for professional interpreters: it shows live captions with the translation side by side in 60+ languages, adds a custom dictionary with medical, legal, and government terms, joins no call, and stores no audio. Check DeepL's current pages for its latest features.

**Can interpreters use DeepL Voice on assignments?**
That depends on the client's rules, the platform, and how the tool handles data. Interpreters should check retention and training terms before using any tool, and note that machine translation is a reference, not a substitute for a qualified interpreter.

**Is machine translation good enough to replace an interpreter?**
For casual conversations and low-stakes meetings it can help people follow along. For medical, legal, immigration, and other high-stakes settings, qualified human interpreters are still the standard. Unicaption is designed as a copilot that supports them, not a replacement.

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*[Unicaption](https://unicaption.com) is a real-time AI captioning and translation copilot for human interpreters — live captions and translation in 60+ languages, end-to-end encrypted, nothing stored. 30 free minutes every week, no credit card required.*