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FineTunes

Create a new fine-tune

post/fine-tunes/

Headers

Cartesia-Version'2026-03-01' date required
Example:2026-03-01

API version header.

Request body

namestring required

Name for the new fine-tune

descriptionstring required

Description for the fine-tune

languagestring required

Language code for the fine-tune

model_id'sonic-3.5-2026-05-04' required

Base model ID to fine-tune from

datasetstring required

Dataset ID containing training files

Example request

{
  "model_id": "sonic-3.5-2026-05-04"
}

Response

idstring required

Unique identifier for the fine-tune

namestring required

Name of the fine-tune

descriptionstring required

Description of the fine-tune

languagestring required

Language code of the fine-tune

model_idstring required

Base model that was used to create this fine-tune

datasetstring required

ID of the dataset used for fine-tuning

status'created' | 'training' | 'completed' | 'failed' required

Status of a fine-tune