----------------------------- **While I generate an answer, here are some sources that might be helpful**: * [Import Twilio Number]() * [Phone Calling]() * [Call Ended Reason]() * [List Calls]() -----------------------------

### Answer It sounds like you're experiencing issues with unexpected billing notifications despite having sufficient funds and a basic setup using Twilio and OpenAI. This could be related to the specific costs associated with the components of your voice pipeline, including transcription, LLM usage, and telephony services, which might exceed your initial estimates or the allocated budget settings in Vapi or Twilio. Here are a couple of steps you can take to investigate and possibly resolve this issue: 1. **Check Detailed Billing**: Review the detailed billing and usage reports on both Vapi and Twilio dashboards to identify any services or calls causing unexpected charges. This helps in understanding whether the costs are coming from call minutes, LLM requests, or other sources. You can view your cost breakdown per call in your Vapi dashboard to understand how charges are being applied [(1)]() . 2. **Review Vapi's Cost Estimation**: Understand the estimated costs provided by Vapi's dashboard, which offers insights into the anticipated expenses for using different aspects of the service like STT, LLM, and TTS . 3. **Check Twilio's Usage and Billing**: Since you're using Twilio, ensure that there are no extra services enabled or unexpected usage that might be contributing to higher costs. Twilio's own dashboard provides detailed logs and billing information that can help you trace the source of any charges. 4. **Monitor the Logs**: Check the logs for any errors or unusual activity that could be causing repeated or failed operations, which might be inadvertently incurring additional charges. If these steps do not clarify the reasons for overbilling, or if the notifications persist despite all configurations appearing correct, you may need to consider reaching out to Vapi support for a detailed review of your account s

etup and usage. Unfortunately, without access to specific logs or settings, it's challenging to provide a precise solution.

Got it. Tagging @User for additional help.