---
title: "Supported languages"
section: "Real-time translation"
order: 3
sidebarLabel: "Supported languages"
---

The real-time API accepts ISO-639-1 language codes (`en`, `es`, `zh`, …).
Regional tags are accepted (`en-US`, `pt-BR`) — only the primary subtag
is used.

---

## Input (`sourceLanguage`)

Languages you can speak. Pass `auto` to let the ASR detect the spoken
language; the detected code is returned on every transcript frame as
`detected_language`.

| Code | Language |
| --- | --- |
| `auto` | Auto-detect |
| `zh` | Chinese (Mandarin) |
| `yue` | Cantonese |
| `en` | English |
| `fr` | French |
| `de` | German |
| `it` | Italian |
| `ja` | Japanese |
| `ko` | Korean |
| `pt` | Portuguese |
| `ru` | Russian |
| `es` | Spanish |

---

## Output — translated text (`targetLanguage` with `audioOutputEnabled=false`)

Languages you can receive as text transcripts. Translation runs on
Qwen3 (4B). Codes marked **text only** have no Piper voice — they can
only be used with `audioOutputEnabled=false`.

| Code | Language | Audio |
| --- | --- | --- |
| `ar` | Arabic | ✓ |
| `bg` | Bulgarian | ✓ |
| `bn` | Bengali | text only |
| `ca` | Catalan | ✓ |
| `cs` | Czech | ✓ |
| `cy` | Welsh | ✓ |
| `da` | Danish | ✓ |
| `de` | German | ✓ |
| `el` | Greek | ✓ |
| `en` | English | ✓ |
| `es` | Spanish | ✓ |
| `eu` | Basque | ✓ |
| `fa` | Persian (Farsi) | ✓ |
| `fi` | Finnish | ✓ |
| `fr` | French | ✓ |
| `ga` | Irish | text only |
| `gu` | Gujarati | text only |
| `he` | Hebrew | text only |
| `hi` | Hindi | ✓ |
| `hu` | Hungarian | ✓ |
| `id` | Indonesian | ✓ |
| `is` | Icelandic | ✓ |
| `it` | Italian | ✓ |
| `ja` | Japanese | text only |
| `ka` | Georgian | ✓ |
| `kk` | Kazakh | ✓ |
| `kn` | Kannada | text only |
| `ko` | Korean | text only |
| `lb` | Luxembourgish | ✓ |
| `lv` | Latvian | ✓ |
| `ml` | Malayalam | ✓ |
| `mr` | Marathi | text only |
| `ne` | Nepali | ✓ |
| `nl` | Dutch | ✓ |
| `no` | Norwegian | ✓ |
| `pl` | Polish | ✓ |
| `pt` | Portuguese | ✓ |
| `ro` | Romanian | ✓ |
| `ru` | Russian | ✓ |
| `sk` | Slovak | ✓ |
| `sl` | Slovenian | ✓ |
| `sq` | Albanian | ✓ |
| `sr` | Serbian | ✓ |
| `sv` | Swedish | ✓ |
| `sw` | Swahili | ✓ |
| `ta` | Tamil | text only |
| `te` | Telugu | ✓ |
| `th` | Thai | text only |
| `tr` | Turkish | ✓ |
| `uk` | Ukrainian | ✓ |
| `ur` | Urdu | ✓ |
| `vi` | Vietnamese | ✓ |
| `yue` | Cantonese | text only |
| `zh` | Chinese (Mandarin) | ✓ |

---

## Output — translated speech (`targetLanguage` with `audioOutputEnabled=true`)

Languages you can receive as translated audio. Voices are synthesized via
[Piper](https://github.com/OHF-Voice/piper1-gpl). Where a language has
both a male and female voice in the Piper catalog, you can select with
`voiceType`; languages marked with a single voice synthesize the same
voice regardless of `voiceType`.

| Code | Language | Voices |
| --- | --- | --- |
| `ar` | Arabic | single |
| `bg` | Bulgarian | single |
| `ca` | Catalan | male, female |
| `cs` | Czech | single |
| `cy` | Welsh | male, female |
| `da` | Danish | single |
| `de` | German | male, female |
| `el` | Greek | single |
| `en` | English | male, female |
| `es` | Spanish | male, female |
| `eu` | Basque | male, female |
| `fa` | Persian (Farsi) | male, female |
| `fi` | Finnish | single |
| `fr` | French | male, female |
| `hi` | Hindi | male, female |
| `hu` | Hungarian | male, female |
| `id` | Indonesian | single |
| `is` | Icelandic | male, female |
| `it` | Italian | male, female |
| `ka` | Georgian | single |
| `kk` | Kazakh | male, female |
| `lb` | Luxembourgish | single |
| `lv` | Latvian | single |
| `ml` | Malayalam | male, female |
| `ne` | Nepali | single |
| `nl` | Dutch | male, female |
| `no` | Norwegian | single |
| `pl` | Polish | male, female |
| `pt` | Portuguese | male, female |
| `ro` | Romanian | single |
| `ru` | Russian | male, female |
| `sk` | Slovak | single |
| `sl` | Slovenian | single |
| `sq` | Albanian | single |
| `sr` | Serbian | single |
| `sv` | Swedish | single |
| `sw` | Swahili | single |
| `te` | Telugu | male, female |
| `tr` | Turkish | single |
| `uk` | Ukrainian | male, female |
| `ur` | Urdu | single |
| `vi` | Vietnamese | single |
| `zh` | Chinese (Mandarin) | single |

The MT model (Qwen3 4B) supports 11 additional text-only target
languages without a Piper voice: Japanese, Korean, Cantonese, Thai,
Irish, Hebrew, Bengali, Tamil, Kannada, Marathi, Gujarati. Use them
with `audioOutputEnabled=false`.

Requesting an unsupported `targetLanguage` with `audioOutputEnabled=true`
returns an `error` frame. Pass `audioOutputEnabled=false` to get
transcripts in any of the text-output languages above.