September 18, 2026

Synthflow TTS for multilingual agents

Synthflow TTS selected as the voice model on a Multilingual agent

Agents set to Multilingual can now use Synthflow TTS as their voice model or fallback. One voice covers the whole conversation, including when the caller switches language mid-call.

Custom action response time

Response time on a custom action in the Actions tab of call details

Call details now shows the response time of every custom action. Open a call, check the Actions tab, and find the slow endpoint behind a long silence.

Call quality metrics on every call

Call quality section in the Telephony tab of call details

The Telephony tab now reports call quality for every call, so you can rule out the network without pulling a PCAP. The same measurements are on the Calls endpoints.