Yes, this is a known bug in the Vapi dashboard when using a Custom transcriber—it's caused by the dashboard lacking defined types for the custom transcriber, resulting in the "Cannot read properties of undefined (reading 'cost')" error. The Vapi team has acknowledged the issue and created a ticket to address it, but no workaround or fix is currently available. For now, you may want to monitor Vapi's updates or support channels for a resolution.
Source:
- [Vapi Custom transcriber known issues (Discord)](
https://discord.com/channels/1211482211119796234/1331930671614001205)