The dashboard’s language picker is the live source of truth — it greys out combinations that aren’t supported and updates as providers add coverage. Use these tables for planning; confirm the exact combination in the dashboard. See Set language for your agent and Configure a multilingual agent for how selection works.
language field. Where a language has multiple locale variants (for example, US vs. British English), they share the same provider support.
Text-to-speech (voice) support
A ✓ means the language is supported by at least one of that provider’s voice models. Some providers gate certain languages to specific models — see Model-level restrictions below.| Language | Code(s) | Platform | MiniMax | Fish Audio | ElevenLabs | Cartesia | OpenAI |
|---|---|---|---|---|---|---|---|
| Afrikaans | af-ZA | ✓ | ✓ | ✓ | ✓ | ✓ | |
| Arabic | ar-SA | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Armenian | hy-AM | ✓ | ✓ | ✓ | |||
| Azerbaijani | az-AZ | ✓ | ✓ | ✓ | |||
| Bosnian | bs-BA | ✓ | ✓ | ✓ | |||
| Bulgarian | bg-BG | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Cantonese | yue-CN | ✓ | ✓ | ||||
| Catalan | ca-ES | ✓ | ✓ | ✓ | ✓ | ✓ | |
| Chinese | zh-CN | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Croatian | hr-HR | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Czech | cs-CZ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Danish | da-DK | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Dutch | nl-NL, nl-BE | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| English | en-US, en-IN, en-GB, en-AU, en-NZ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Filipino | fil-PH | ✓ | ✓ | ✓ | ✓ | ✓ | |
| Finnish | fi-FI | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| French | fr-FR, fr-CA | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Galician | gl-ES | ✓ | ✓ | ✓ | |||
| German | de-DE | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Greek | el-GR | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Hebrew | he-IL | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Hindi | hi-IN | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Hungarian | hu-HU | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Icelandic | is-IS | ✓ | ✓ | ✓ | |||
| Indonesian | id-ID | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Italian | it-IT | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Japanese | ja-JP | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Kannada | kn-IN | ✓ | ✓ | ✓ | ✓ | ||
| Kazakh | kk-KZ | ✓ | ✓ | ✓ | |||
| Korean | ko-KR | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Latvian | lv-LV | ✓ | ✓ | ✓ | |||
| Lithuanian | lt-LT | ✓ | ✓ | ✓ | |||
| Macedonian | mk-MK | ✓ | ✓ | ||||
| Malay | ms-MY | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Marathi | mr-IN | ✓ | ✓ | ✓ | ✓ | ||
| Nepali | ne-NP | ✓ | ✓ | ✓ | |||
| Norwegian | no-NO | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Persian | fa-IR | ✓ | ✓ | ✓ | ✓ | ✓ | |
| Polish | pl-PL | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Portuguese | pt-PT, pt-BR | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Romanian | ro-RO | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Russian | ru-RU | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Serbian | sr-RS | ✓ | ✓ | ✓ | |||
| Slovak | sk-SK | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Slovenian | sl-SI | ✓ | ✓ | ✓ | ✓ | ||
| Spanish | es-ES, es-419 | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Swahili | sw-KE | ✓ | ✓ | ✓ | |||
| Swedish | sv-SE | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Tamil | ta-IN | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Thai | th-TH | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Turkish | tr-TR | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Ukrainian | uk-UA | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Urdu | ur-IN | ✓ | ✓ | ✓ | |||
| Vietnamese | vi-VN | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Welsh | cy-GB | ✓ | ✓ | ✓ |
Model-level restrictions
Most providers support the same languages across all of their models. The exceptions: ElevenLabs| Model | Languages |
|---|---|
eleven_v3 | All languages in the ElevenLabs column above |
eleven_flash_v2_5 | English, Japanese, Chinese, German, Hindi, French, Korean, Portuguese, Italian, Spanish, Indonesian, Dutch, Turkish, Filipino, Polish, Swedish, Bulgarian, Romanian, Arabic, Czech, Greek, Finnish, Croatian, Malay, Slovak, Danish, Tamil, Ukrainian, Russian, Hungarian, Norwegian, Vietnamese |
eleven_multilingual_v2 | Same as eleven_flash_v2_5 above, minus Hungarian, Norwegian, and Vietnamese |
eleven_flash_v2 | English only |
| Model | Languages |
|---|---|
s2-pro, s2.1-pro | All languages in the Fish Audio column above |
s1 | English, Chinese, Japanese, German, French, Spanish, Korean, Arabic, Russian, Dutch, Italian, Polish, Portuguese |
tts-1, gpt-4o-mini-tts), Cartesia (sonic-3, sonic-3-latest, sonic-3.5), and MiniMax (speech-02-turbo, speech-2.8-turbo) support their full language set on every model.
Speech recognition (ASR) support
A ✓ means the provider can transcribe that language. By default Retell auto-routes across providers based on your agent’s languages and whether it’s optimized for latency or accuracy. You can also pin a specific provider manually with a custom speech-to-text config, as long as it supports every language your agent uses. See Speech recognition providers.| Language | Code(s) | Deepgram | Azure | Soniox | AssemblyAI |
|---|---|---|---|---|---|
| Afrikaans | af-ZA | ✓ | ✓ | ||
| Arabic | ar-SA | ✓ | ✓ | ✓ | ✓ |
| Armenian | hy-AM | ✓ | |||
| Azerbaijani | az-AZ | ✓ | ✓ | ||
| Bosnian | bs-BA | ✓ | ✓ | ||
| Bulgarian | bg-BG | ✓ | ✓ | ✓ | |
| Cantonese | yue-CN | ✓ | ✓ | ✓ | |
| Catalan | ca-ES | ✓ | ✓ | ✓ | |
| Chinese | zh-CN | ✓ | ✓ | ✓ | ✓ |
| Croatian | hr-HR | ✓ | ✓ | ||
| Czech | cs-CZ | ✓ | ✓ | ✓ | |
| Danish | da-DK | ✓ | ✓ | ✓ | ✓ |
| Dutch | nl-NL, nl-BE | ✓ | ✓ | ✓ | ✓ |
| English | en-US, en-IN, en-GB, en-AU, en-NZ | ✓ | ✓ | ✓ | ✓ |
| Filipino | fil-PH | ✓ | |||
| Finnish | fi-FI | ✓ | ✓ | ✓ | ✓ |
| French | fr-FR, fr-CA | ✓ | ✓ | ✓ | ✓ |
| Galician | gl-ES | ✓ | ✓ | ||
| German | de-DE | ✓ | ✓ | ✓ | ✓ |
| Greek | el-GR | ✓ | ✓ | ✓ | |
| Hebrew | he-IL | ✓ | ✓ | ✓ | |
| Hindi | hi-IN | ✓ | ✓ | ✓ | ✓ |
| Hungarian | hu-HU | ✓ | ✓ | ✓ | |
| Icelandic | is-IS | ✓ | |||
| Indonesian | id-ID | ✓ | ✓ | ✓ | |
| Italian | it-IT | ✓ | ✓ | ✓ | ✓ |
| Japanese | ja-JP | ✓ | ✓ | ✓ | ✓ |
| Kannada | kn-IN | ✓ | ✓ | ||
| Kazakh | kk-KZ | ✓ | ✓ | ||
| Korean | ko-KR | ✓ | ✓ | ✓ | |
| Latvian | lv-LV | ✓ | ✓ | ✓ | |
| Lithuanian | lt-LT | ✓ | ✓ | ✓ | |
| Macedonian | mk-MK | ✓ | ✓ | ||
| Malay | ms-MY | ✓ | ✓ | ✓ | |
| Marathi | mr-IN | ✓ | ✓ | ||
| Nepali | ne-NP | ✓ | |||
| Norwegian | no-NO | ✓ | ✓ | ✓ | ✓ |
| Persian | fa-IR | ✓ | ✓ | ||
| Polish | pl-PL | ✓ | ✓ | ✓ | |
| Portuguese | pt-PT, pt-BR | ✓ | ✓ | ✓ | ✓ |
| Romanian | ro-RO | ✓ | ✓ | ✓ | |
| Russian | ru-RU | ✓ | ✓ | ✓ | |
| Serbian | sr-RS | ✓ | ✓ | ||
| Slovak | sk-SK | ✓ | ✓ | ✓ | |
| Slovenian | sl-SI | ✓ | ✓ | ||
| Spanish | es-ES, es-419 | ✓ | ✓ | ✓ | ✓ |
| Swahili | sw-KE | ✓ | ✓ | ||
| Swedish | sv-SE | ✓ | ✓ | ✓ | ✓ |
| Tamil | ta-IN | ✓ | ✓ | ||
| Thai | th-TH | ✓ | ✓ | ✓ | |
| Turkish | tr-TR | ✓ | ✓ | ✓ | ✓ |
| Ukrainian | uk-UA | ✓ | ✓ | ✓ | |
| Urdu | ur-IN | ✓ | ✓ | ||
| Vietnamese | vi-VN | ✓ | ✓ | ✓ | ✓ |
| Welsh | cy-GB | ✓ | ✓ |
- Azure covers every supported language and acts as the broad-coverage fallback.
- AssemblyAI supports code-switching across its listed languages.
- Deepgram and Soniox support any-to-any code-switching for multilingual agents across their supported languages; Azure is single-language only.