### Answer Both approaches work for Spanish agents. You can write prompts in English and specify that responses should be in Spanish, or you can write prompts directly in Spanish. [(1) ]() Best practices: - English prompts work well for clarity—just specify the response language (e.g., "Always reply in Spanish" or "Habla solo en español") . [(2) ]() , [(1) ]() - Spanish prompts give you finer control over tone and cultural nuances. - Mixing is also an option—for example, use the target language for task-specific instructions and English for general guidance. If you set the agent language to Spanish but it still speaks English, add clear Spanish instructions in your prompt (e.g., "Habla solo en español") . [(2) ]() Make sure to select a voice that matches Spanish for a natural-sounding experience. [(1) ]()

​ To learn more, see the sources I considered: [[1] Discord message from @orney_dev on 2025-02-20](https://discord.com/channels/1186424376300679209/1186462578310910112/1342209985567784971) [[2] Agent Language not taking effect in Voice](https://discord.com/channels/1186424376300679209/1400434278633967616) ​

Feel free to tag @AI Evy with additional questions. I also appreciate feedback, it helps me improve.