Hello, I have a problem with my assistant. When I talk to it everything is good until it's acting weird and saying random things in another language. I have tried to change the prompt but without any succes. Can someone please look if there is a problem or what the reason can be. This is one of the call ID's : eeda74e5-35b6-44ee-aa7f-4cd73b709766 222ca453-12d3-4415-8e02-423d3f074c33 Already thank you for your time.

Suggestion: Check your assistant's transcriber and voice settings to ensure both are set to your desired language (e.g., English). In the Vapi dashboard, go to your assistant's configuration and verify the "transcriber" and "voice" fields—set them explicitly to English models if needed. This can help prevent the assistant from unexpectedly switching to another language during calls. For example:

json
"transcriber": { "provider": "google", "language": "en" },
"voice": { "provider": "azure", "voiceId": "en-US-JennyNeural" }

If the issue persists, consider reaching out to Vapi support with your call IDs for further investigation. Sources: - [Vapi Multilingual Support Documentation](https://docs.vapi.ai/customization/multilingual) - [Vapi Prompting Guide](https://docs.vapi.ai/prompting-guide)

Set STT to English, use an English-only TTS voice, add “only respond in English” to the prompt, lower temperature to 0..

Yes but I need the multilingual AI can I do it for more languages?

Use a multilingual STT provider, selecting appropriate TTS voices for each language, setting a prompt that allows multiple languages, and lowering the temperature for consistent responses..

It’s all like you said. I have deepgram multi as STT provider, I have eleven labs also multilingual supported. In my prompt I have also stated that it’s needed to detect what language the caller speaks and remain in that language. What else can it be?

Hey there, could you please help me understand what exactly is meant by starting to say random things in other languages and acting weird? If you're unable to provide a timestamp indicating when this behavior begins and when it starts speaking in other languages, it would be greatly appreciated. Additionally, please share the expected versus actual responses.