You should design your agents using English, but agents can automatically detect the language of end-user input, and they will automatically respond using the same language.
Chat interactions
For chat interactions (text only), you can use any language supported by Vertex AI Gemini models.
Voice interactions
For voice interactions (audio), the following languages are supported:
| Language | Locale | Code | Launch stage |
|---|---|---|---|
| Chinese | Mandarin | zh-CN | Preview |
| Danish | Denmark | da-DK | Preview |
| Dutch | Netherlands | nl-NL | Preview |
| Dutch | Belgium | nl-BE | Preview |
| English | Australia | en-AU | Preview |
| English | Canada | en-CA | Preview |
| English | India | en-IN | GA |
| English | United Kingdom | en-GB | Preview |
| English | United States | en-US | GA |
| Finnish | Finland | fi-FI | Preview |
| French | Canada | fr-CA | GA |
| French | France | fr-FR | GA |
| German | Germany | de-DE | GA |
| Hindi | India | hi-IN | Preview |
| Hinglish | India | en-hi | Preview |
| Indonesian | Indonesia | id-ID | Preview |
| Italian | Italy | it-IT | Preview |
| Japanese | Japan | ja-JP | GA |
| Korean | South Korea | ko-KR | Preview |
| Marathi | India | mr-IN | Preview |
| Polish | Poland | pl-PL | Preview |
| Portuguese | Brazil | pt-BR | GA |
| Romanian | Romania | ro-RO | Preview |
| Spanglish | Various | en-es | Preview |
| Spanish | Mexico | es-MX | Preview |
| Spanish | Spain | es-ES | GA |
| Swedish | Sweden | sv-SE | Preview |
| Spanish | US | es-US | GA |
| Tamil | India | ta-IN | Preview |
| Telugu | India | te-IN | Preview |
| Turkish | Turkey | tr-TR | Preview |
| Vietnamese | Vietnam | vi-VN | GA |