SHOKI
04/10/2025, 3:50 PMVapi Support Bot
04/10/2025, 3:52 PMsystemPrompt
property might be deprecated - instead, use the messages
array with a role
of system
[according to Discord discussions](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1337126843790397591).
Example of the correct format:
json
"model": {
"provider": "openai",
"model": "gpt-4o-mini",
"messages": [
{
"role": "system",
"content": "your prompt here"
}
]
}
2. **Empty First Message**: Ensure your first message for the AI Assistant isn't empty, as this could prevent the AI from speaking initially [based on user reports](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1339467226381684789).
## Call Going Black Issues
1. **Service Degradation**: There might be service issues with Deepgram or other services affecting your voicebot's functionality [according to support discussions](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1296852804631265392).
2. **Silence Timeout**: Calls may be ending due to silence timeout settings [as reported by users](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1296852804631265392).
3. **Voice AI "Deafness"**: The AI might not be hearing user input, causing the call to end [based on reported bugs](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1340235729204285510).
## Troubleshooting StepsVapi Support Bot
04/10/2025, 3:52 PMwaitSeconds
to 0.8 in your startSpeakingPlan
- Set transcriber.endpointing
to 300
- Try enabling smartEndpointingEnabled
[based on user solutions](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1338497725917827196)
3. **Try Different Models**: If you're using Groq, try switching to OpenAI models [as suggested in support threads](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1303981615344779325). Some users reported better results with GPT-4o instead of GPT-4o mini [according to discussions](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1340523490662416494).
4. **Adjust Temperature**: Set the model temperature to 0-0.3 to resolve issues with the AI behaving oddly [as recommended by users](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1341892594044633099).
5. **Request Call ID**: If the issue persists, getting the call ID can help in tracking down the specific problem [according to support recommendations](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1341487523897147422).
Would you be able to share which of these troubleshooting steps you've already tried, or if you need more specific guidance on any particular solution?
Sources:
- [Discord discussions](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1337126843790397591)
- [User reports](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1339467226381684789)
- [Support discussions](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1296852804631265392)Vapi Support Bot
04/10/2025, 3:52 PMKyle Brunker
04/11/2025, 7:17 PM