> ## Documentation Index
> Fetch the complete documentation index at: https://docs.cartesia.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Create

> Create a new fine-tune



## OpenAPI

````yaml /latest.yml POST /fine-tunes/
openapi: 3.0.1
info:
  title: Cartesia API
  version: 0.0.1
servers:
  - url: https://api.cartesia.ai
    description: Production
security: []
paths:
  /fine-tunes/:
    post:
      tags:
        - FineTunes
      description: Create a new fine-tune
      operationId: fineTunes_create
      parameters:
        - $ref: '#/components/parameters/CartesiaVersionHeader'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateFineTuneRequest'
      responses:
        '200':
          description: ''
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/FineTune'
      security:
        - APIKeyAuth: []
components:
  parameters:
    CartesiaVersionHeader:
      name: Cartesia-Version
      in: header
      description: API version header.
      required: true
      schema:
        type: string
        format: date
        example: '2026-03-01'
        enum:
          - '2026-03-01'
  schemas:
    CreateFineTuneRequest:
      title: CreateFineTuneRequest
      type: object
      description: Request to create a new fine-tune
      properties:
        name:
          type: string
          description: Name for the new fine-tune
        description:
          type: string
          description: Description for the fine-tune
        language:
          type: string
          description: Language code for the fine-tune
        model_id:
          type: string
          description: Base model ID to fine-tune from
        dataset:
          type: string
          description: Dataset ID containing training files
      required:
        - name
        - description
        - language
        - model_id
        - dataset
    FineTune:
      title: FineTune
      type: object
      description: Information about a fine-tune
      properties:
        id:
          type: string
          description: Unique identifier for the fine-tune
        name:
          type: string
          description: Name of the fine-tune
        description:
          type: string
          description: Description of the fine-tune
        language:
          type: string
          description: Language code of the fine-tune
        model_id:
          type: string
          description: Base model identifier to fine-tune from
        dataset:
          type: string
          description: ID of the dataset used for fine-tuning
        status:
          $ref: '#/components/schemas/FineTuneStatus'
          description: Current status of the fine-tune
      required:
        - id
        - name
        - description
        - language
        - model_id
        - dataset
        - status
    FineTuneStatus:
      title: FineTuneStatus
      type: string
      enum:
        - created
        - training
        - completed
        - failed
      description: Status of a fine-tune
  securitySchemes:
    APIKeyAuth:
      type: http
      scheme: bearer
      bearerFormat: API Key
      description: >-
        Cartesia API key (`sk_car_...`). Get one at
        [play.cartesia.ai/keys](https://play.cartesia.ai/keys).

````