I am trying the new Minimax Voice Provider and when I test the agent there is no audio. I tested with the "Talk to Assistant" and just get the message "Waiting for conversation..." I switched the voice to another provider and it worked. Is there an issue with this new model or something else that needs to be enabled to use it?

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Same, did you figure out how to fix it?

Add your Minimax API credentials in the Provider Keys section of vapi. Once that’s set up, make sure your assistant is using Minimax as the voice provider and set it to speak first (assistant-says-first)..