| Document Number | Revision Number | Revision Date |
|---|---|---|
| KN. GU.36.EN | Rev7 | 26.02.2026 |
Supported Languages
The set of languages available in Virtual Translator is determined by the intersection of the Speech Recognition (SR), Text-to-Speech (TTS) and Translation capabilities used in the translation pipeline. A language can only be supported in VT if SR, TTS and translation services are available for that language.
Languages Supported by SESTEK SR & TTS
The following languages are natively supported through the combination of Sestek Speech Recognition, Sestek Text-to-Speech engines, therefore VT can be used:
| # | Language |
|---|---|
| 1 | Arabic |
| 2 | Azerbaijani |
| 3 | English |
| 4 | French |
| 5 | German |
| 6 | Hindi |
| 7 | Japanese |
| 8 | Kurdish |
| 9 | Pashto |
| 10 | Persian |
| 11 | Russian |
| 12 | Spanish |
| 13 | Turkish |
| 14 | Ukrainian |
| 15 | Urdu |
- For the full list of SR-supported languages, see Knovvu SR – Supported Languages and Models.
- For the full list of TTS-supported languages, see Knovvu TTS – Supported Languages and Voices.
3rd Party TTS Providers
Beyond the native SESTEK TTS engine, Virtual Translator can also leverage the following third-party TTS providers to extend language and voice coverage:
| Provider | Supported Languages |
|---|---|
| Microsoft Azure TTS | Language and Voice Support for Azure Speech |
| OpenAI TTS | OpenAI Text-to-Speech – Supported Languages |
| ElevenLabs TTS | ElevenLabs – Supported Languages |
If a language is supported by SESTEK SR and the 3rd party TTS provider mentioned above, Virtual Translator can be used.
Translation Engine
SESTEK Virtual Translator supports the following translation options:
| Engine | Description | Supported Languages |
|---|---|---|
| Google Translate | Cloud-based neural machine translation supporting 189+ languages. | Google Cloud Translation – Language Support |
| LLM Translation (OpenAI) | Translation powered by large language models. Supports a broad and continuously expanding set of languages without a fixed list. | Any |
Both translation engines can be used interchangeably depending on deployment requirements, cost considerations, and language pair availability.
Since OpenAI has no language limitation for translation functionality, any language supported by SR/TTS can be used VT.