Where it fits
Speech synthesis
This APIFleet integration is TTS. It does not imply that every API offered by Soniox is exposed in the platform.
Configure the connection
Choose Soniox in the TTS stage and a voice supported by your account. Configure transcription independently with a supported APIFleet STT adapter.
Assistant configuration fragment. Merge this into your assistant; select current model and voice IDs from your account before saving.
{
"pipeline_mode": "cascading",
"tts_provider": "soniox",
"tts_voice": "YOUR_SONIOX_VOICE_ID"
}Keep provider secrets in workspace credentials. The public MCP provider matrix describes capabilities; it does not connect your provider account.
Test this boundary first
Try multilingual names and a continuous exchange with interruptions. Inspect synthesis failures separately from transcription errors.
Save a known working configuration and move one test route first. Inspect the call log before increasing traffic. Follow the staged migration guide.
Understand the bill
APIFleet adds $0.03 per connected AI minute, billed per second. Provider and carrier usage are additional. With your own keys, provider charges go directly to the provider. No monthly subscription or free call credits; prepaid top-ups start at $10.