Language change detected server message not working

worthy-rose · 2025-04-25T13:58:04.169Z

Hello i'm trying to manage the server message ''language-change-detected" but is not possible to set it in the dashboard, also, if i trying use a transational agent, i add this server message in the configuration serverMessages: [ "end-of-call-report", "status-update", "hang", "function-call", "phone-call-control", "language-change-detected" ], but i don't get the "language-change-detected" message (yes i get the others)

V

Vapi Support BotAPP•4/25/25, 2:00 PM

According to the information I found, there is no

language-change-detected

language-change-detected

language-change-detected

language-change-detected event triggered in Vapi, which explains why you're not receiving this message even when configured. For language detection, Vapi uses automated language recognition instead.

If you need to handle language changes, consider using the

codeSwitchingEnabled

codeSwitchingEnabled

codeSwitchingEnabled

codeSwitchingEnabled parameter with your transcriber, which allows recognition of language switches within utterances:

{
  "transcriber": {
    "provider": "deepgram",
    "codeSwitchingEnabled": true
  }
}

{
  "transcriber": {
    "provider": "deepgram",
    "codeSwitchingEnabled": true
  }
}

{
  "transcriber": {
    "provider": "deepgram",
    "codeSwitchingEnabled": true
  }
}

{
  "transcriber": {
    "provider": "deepgram",
    "codeSwitchingEnabled": true
  }
}

Note that the transcriber model must support code-switching and the specific languages being used.

Sources:

⤵️ Mention @Vapi Support Bot for follow-ups 🐥

V

Vapi Support BotAPP•4/25/25, 2:00 PM

According to the information I found, there is no

language-change-detected

language-change-detected

language-change-detected

language-change-detected event triggered in Vapi, which explains why you're not receiving this message even when configured. For language detection, Vapi uses automated language recognition instead.

If you need to handle language changes, consider using the

codeSwitchingEnabled

codeSwitchingEnabled

codeSwitchingEnabled

codeSwitchingEnabled parameter with your transcriber, which allows recognition of language switches within utterances:

{
  "transcriber": {
    "provider": "deepgram",
    "codeSwitchingEnabled": true
  }
}

{
  "transcriber": {
    "provider": "deepgram",
    "codeSwitchingEnabled": true
  }
}

{
  "transcriber": {
    "provider": "deepgram",
    "codeSwitchingEnabled": true
  }
}

{
  "transcriber": {
    "provider": "deepgram",
    "codeSwitchingEnabled": true
  }
}

Note that the transcriber model must support code-switching and the specific languages being used.

Sources:

⤵️ Mention @Vapi Support Bot for follow-ups 🐥

W

worthy-roseOP•4/25/25, 5:39 PM

@aivini

V

VapiAPP•4/28/25, 1:07 AM

Hey! To help track down this issue, could you share:

The call IDThis would really help us figure out what went wrong!

Ccomprehensive-tomato Hey! To help track down this issue, could you share: - The call ID This...

S

spontaneous-moccasin•4/28/25, 7:28 AM

Hello!
The call ID is : 40370a1f-f4f8-4ff6-b79f-43a11c5dc70c
All de conversations with the number from +34911 67 77 69 to + 34 711 717 713 have the same trouble.
Thanks

V

VapiAPP•4/30/25, 8:41 AM

    "transcriber": {
      "model": "nova-3",
      "language": "multi",
      "provider": "deepgram",
      "codeSwitchingEnabled": true
    }

    "transcriber": {
      "model": "nova-3",
      "language": "multi",
      "provider": "deepgram",
      "codeSwitchingEnabled": true
    }

    "transcriber": {
      "model": "nova-3",
      "language": "multi",
      "provider": "deepgram",
      "codeSwitchingEnabled": true
    }

    "transcriber": {
      "model": "nova-3",
      "language": "multi",
      "provider": "deepgram",
      "codeSwitchingEnabled": true
    }

Apologies for the delayed response, You have to set codeSwitchingEnabled to true, after that you will get this event.

S

spontaneous-moccasin•5/5/25, 1:46 PM

Hi Shubham,

Thanks for the help. According to Deepgram’s official docs,

codeSwitchingEnabled

codeSwitchingEnabled

codeSwitchingEnabled

codeSwitchingEnabled is supported on both

nova-2

nova-2

nova-2

nova-2 and

nova-3

nova-3

nova-3

nova-3 models. However, when I set

codeSwitchingEnabled: true

codeSwitchingEnabled: true

codeSwitchingEnabled: true

codeSwitchingEnabled: true with

nova-3

nova-3

nova-3

nova-3, I get this error from Vapi:

assistant.transcriber.codeSwitchingEnabled must be false. 'codeSwitchingEnabled' requires the model to be one of: nova-2, nova-2-general.
assistant.transcriber.codeSwitchingEnabled must be false. 'codeSwitchingEnabled' requires the model to be one of: nova-2, nova-2-general.
assistant.transcriber.codeSwitchingEnabled must be false. 'codeSwitchingEnabled' requires the model to be one of: nova-2, nova-2-general.
assistant.transcriber.codeSwitchingEnabled must be false. 'codeSwitchingEnabled' requires the model to be one of: nova-2, nova-2-general.

It seems there's a mismatch between Deepgram's capabilities and what Vapi currently allows. Can you confirm if support for

codeSwitchingEnabled

codeSwitchingEnabled

codeSwitchingEnabled

codeSwitchingEnabled with

nova-3

nova-3

nova-3

nova-3 will be added soon?

Thanks!

V

VapiAPP•5/5/25, 11:12 PM

Hey, let me check with the team on this why code switching enabled

is not supported for the Nova 3 yet.

S

spontaneous-moccasin•5/6/25, 8:20 AM

Thanks Shubham,
This feature is important for our company.

V

VapiAPP•5/14/25, 1:56 AM

You can raise an feature request for it over here: https://roadmap.vapi.ai

Vapi

Give feedback to the Vapi team so we can make more informed product decisions. Powered by Canny.

Ccomprehensive-tomato Hey, let me check with the team on this why code switching enabled is not sup...

S

spontaneous-moccasin•5/14/25, 7:38 AM

How long until this feature is supported in Vapi?
Thanks

V

VapiAPP•5/15/25, 2:43 AM

Hey,

Could you please schedule a brief call at your convenience so we can discuss this matter in detail?

Kindly use the following link to book a suitable time: https://calendly.com/shubham-vapi/chat-30m.

S

spontaneous-moccasin•5/15/25, 9:49 AM

thanks

Language change detected server message not working

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