---
title: "POST /fine-tunes/"
method: POST
path: "/fine-tunes/"
tags: ["FineTunes"]
---

# POST /fine-tunes/

`POST /fine-tunes/`

Create a new fine-tune

## Headers

- `Cartesia-Version` '2026-03-01', date, required

## Request body

- CreateFineTuneRequest — Request to create a new fine-tune
  - `name` string, required — Name for the new fine-tune
  - `description` string, required — Description for the fine-tune
  - `language` string, required — Language code for the fine-tune
  - `model_id` 'sonic-3.5-2026-05-04', required — Base model ID to fine-tune from
  - `dataset` string, required — Dataset ID containing training files

## Response `200`

- FineTune — Information about a fine-tune
  - `id` string, required — Unique identifier for the fine-tune
  - `name` string, required — Name of the fine-tune
  - `description` string, required — Description of the fine-tune
  - `language` string, required — Language code of the fine-tune
  - `model_id` string, required — Base model that was used to create this fine-tune
  - `dataset` string, required — ID of the dataset used for fine-tuning
  - `status` 'created' | 'training' | 'completed' | 'failed', required — Status of a fine-tune

---

[API](https://skmtc.net/cartesia/apis/cartesia-api.md) · [All operations](https://skmtc.net/cartesia/apis/cartesia-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/cartesia/cartesia-api/revisions/8910812440d3/schema)