Create
Create a new fine-tune
Authorizations
Cartesia API key (sk_car_...). Get one at play.cartesia.ai/keys.
Headers
API version header.
2026-08-14 "2026-08-14"
Body
Request to create a new fine-tune
Name for the new fine-tune
Description for the fine-tune
Language code for the fine-tune. Cannot be changed after training starts or completes.
Base model ID to fine-tune from
sonic-3.6-2026-08-27 "sonic-3.6-2026-08-27"
Dataset ID containing training files
Metadata for labeling the accent of this fine-tune. See GET /accents for values valid for each language. Cannot be changed after training starts or completes.
arabic, khaleeji, middle-eastern-arabic, modern-standard-arabic Response
Information about a fine-tune
Unique identifier for the fine-tune
Name of the fine-tune
Description of the fine-tune
Language code of the fine-tune
Base model that was used to create this fine-tune
ID of the dataset used for fine-tuning
Current status of the fine-tune
created, training, completed, failed Accent metadata for the voice.
arabic, khaleeji, middle-eastern-arabic, modern-standard-arabic Structured user-facing errors when training fails.