OFFICIAL CARTESIA NOTICES

Cartesia model deprecation schedule

Cartesia has no upcoming shutdown dates published. In the last 12 months 12 models were retired or shut down, most recently sonic-turbo on Oct 20, 2026.

Last updated Oct 23, 2026 · Cartesia dashboard and alerts

Upcoming shutdowns 0

Cartesia has not published an upcoming shutdown date for any tracked model.

Retired or shut down in the last 12 months 12

Cartesia models retired in the last 12 months
Date	Model	Status	Replacement	Source
Oct 20, 2026	`sonic-turbo`	Shut down	None published	Notice ↗
Oct 20, 2026	`sonic-3-2025-10-27`	Shut down	None published	Notice ↗
Oct 20, 2026	`sonic-2`	Shut down	None published	Notice ↗
Jun 1, 2026	`sonic-turbo-2025-06-04`	Retired	None published	Notice ↗
Jun 1, 2026	`sonic-turbo-2025-03-07`	Retired	None published	Notice ↗
Jun 1, 2026	`sonic-multilingual`	Retired	None published	Notice ↗
Jun 1, 2026	`sonic-english`	Retired	None published	Notice ↗
Jun 1, 2026	`sonic-2-2025-06-11`	Retired	None published	Notice ↗
Jun 1, 2026	`sonic-2-2025-05-08`	Retired	None published	Notice ↗
Jun 1, 2026	`sonic-2-2025-04-16`	Retired	None published	Notice ↗
Jun 1, 2026	`sonic-2-2025-03-07`	Retired	None published	Notice ↗
Jun 1, 2026	`sonic`	Retired	None published	Notice ↗

Official Cartesia sources

docs.cartesia.ai/build-with-cartesia/tts-models/api-changes ↗

Each provider and hosting route sets its own dates. A model offered on several platforms can stop on different days; ModelClock reads each notice from the provider's own documentation.