### Answer Based on the documentation, the available Cartesia voice models in Retell AI are: [(1) ]() [(2) ]() [(3) ]() -

sonic-2

-

sonic-3

-

sonic-turbo

The documentation does not distinguish between "Sonic-3 Latest" and "Sonic-3 Cartesia" as separate options—there is only

sonic-3

listed as a

voice_model

option. [(1) ]() If you're seeing "Sonic-3 Latest" as an option in the dashboard, this may be a UI label that maps to the same underlying

sonic-3

model from Cartesia. Note: Community members have reported occasional issues with Sonic-3, including random voice shifts or choppy tone, which appear to be related to temporary Cartesia outages. Setting up a fallback voice from a different provider is recommended. [(4) ]() For clarification on specific differences between any dashboard labels, I'd suggest reaching out to support: - [Contact Sales]() - [GitHub]() Would you like a general answer based on my knowledge instead?

​ To learn more, see the sources I considered: [[1] Update Voice Agent](https://docs.retellai.com/api-references/update-agent) [[2] Create Voice Agent](https://docs.retellai.com/api-references/create-agent) [[3] Get Voice Agent](https://docs.retellai.com/api-references/get-agent) [[4] Cartesia Sonic-3 issues](https://discord.com/channels/1186424376300679209/1438140278077653012) ​

Feel free to tag @AI Evy with additional questions. I also appreciate feedback, it helps me improve.