Retell AI Clone Voice API

openapi: 3.0.3
info:
  title: Retell SDK Add Community Voice Clone Voice API
  version: 3.0.0
  contact:
    name: Retell Support
    url: https://www.retellai.com/
    email: support@retellai.com
  license:
    name: Apache 2.0
    url: https://www.apache.org/licenses/LICENSE-2.0.html
servers:
- url: https://api.retellai.com
  description: The production server.
security:
- api_key: []
tags:
- name: Clone Voice
paths:
  /clone-voice:
    post:
      description: Clone a voice from audio files
      operationId: cloneVoice
      requestBody:
        required: true
        content:
          multipart/form-data:
            schema:
              type: object
              required:
              - files
              - voice_name
              - voice_provider
              properties:
                files:
                  type: array
                  items:
                    type: string
                    format: binary
                  description: Audio files to use for voice cloning. Up to 25 files allowed. For Cartesia and MiniMax, only 1 file is supported. For Inworld, up to 3 files are supported.
                voice_name:
                  type: string
                  minLength: 1
                  maxLength: 200
                  description: Name for the cloned voice
                voice_provider:
                  type: string
                  enum:
                  - elevenlabs
                  - cartesia
                  - minimax
                  - fish_audio
                  - platform
                  description: Voice provider to use for cloning.
      responses:
        '201':
          description: Voice cloned successfully
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/VoiceResponse'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '402':
          $ref: '#/components/responses/PaymentRequired'
        '429':
          $ref: '#/components/responses/TooManyRequests'
        '500':
          $ref: '#/components/responses/InternalServerError'
      tags:
      - Clone Voice
components:
  responses:
    TooManyRequests:
      description: Too Many Requests
      content:
        application/json:
          schema:
            type: object
            properties:
              status:
                type: string
                enum:
                - error
              message:
                type: string
                example: Account rate limited, please throttle your requests.
    Unauthorized:
      description: Unauthorized
      content:
        application/json:
          schema:
            type: object
            properties:
              status:
                type: string
                enum:
                - error
              message:
                type: string
                example: API key is missing or invalid.
    PaymentRequired:
      description: Payment Required
      content:
        application/json:
          schema:
            type: object
            properties:
              status:
                type: string
                enum:
                - error
              message:
                type: string
                example: Trial has ended, please add payment method.
    BadRequest:
      description: Bad Request
      content:
        application/json:
          schema:
            type: object
            properties:
              status:
                type: string
                enum:
                - error
              message:
                type: string
                example: Invalid request format, please check API reference.
    InternalServerError:
      description: Internal Server Error
      content:
        application/json:
          schema:
            type: object
            properties:
              status:
                type: string
                enum:
                - error
              message:
                type: string
                example: An unexpected server error occurred.
  schemas:
    VoiceResponse:
      type: object
      required:
      - voice_id
      - voice_name
      - provider
      - gender
      properties:
        voice_id:
          type: string
          example: retell-Cimo
          description: Unique id for the voice.
        voice_name:
          type: string
          example: Adrian
          description: Name of the voice.
        provider:
          type: string
          enum:
          - elevenlabs
          - openai
          - deepgram
          - cartesia
          - minimax
          - fish_audio
          - platform
          example: elevenlabs
          description: Indicates the provider of voice.
        accent:
          type: string
          example: American
          description: Accent annotation of the voice.
        gender:
          type: string
          enum:
          - male
          - female
          example: male
          description: Gender of voice.
        age:
          type: string
          example: Young
          description: Age annotation of the voice.
        preview_audio_url:
          type: string
          example: https://retell-utils-public.s3.us-west-2.amazonaws.com/adrian.mp3
          description: URL to the preview audio of the voice.
  securitySchemes:
    api_key:
      type: http
      scheme: bearer
      bearerFormat: string
      description: Authentication header containing API key (find it in dashboard). The format is "Bearer YOUR_API_KEY"