LALAL.AI Batch Stem Separation API

openapi: 3.1.0
info:
  title: LALAL.AI Batch Stem Separation API
  version: 1.1.0
  description: '

    This is the LALAL.AI API.


    To authenticate, provide your license key in the `X-License-Key` header of each request.


    Typical usage example:

    1) Upload a file using the ''/upload/'' endpoint to get a ''source_id''.

    2) Start a splitting task using the ''/split/'' endpoint with the obtained ''source_id'' and desired presets.

    3) Check the status of your task using the ''/check/'' endpoint with the returned ''task_id''.

    4) Once the task is complete, download the processed files using urls from the ''/check/'' response.

    5) (If needed), you can delete the source file and all its resulting tracks from our servers, using the ''/delete/'' endpoint with the ''source_id''.


    Notes:


    You can use the same source_id for concurrent splitting tasks.


    You can check multiple task IDs in a single ''/check/'' request by providing a list of ''task_ids''.


    '
servers:
- url: https://www.lalal.ai
  description: LALAL.AI API v1 production endpoint
tags:
- name: Batch Stem Separation
paths:
  /api/v1/split/batch/stem_separator/:
    post:
      operationId: batch_split_split_batch_enhanced
      summary: Split multiple files into stems using the stem separator presets
      parameters: []
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/BatchTasksResponse'
        '400':
          description: Bad Request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CommonErrorResponse'
        '422':
          description: Unprocessable Entity
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CommonErrorResponse'
      description: "\n    Batch version of /split/stem_separator/. Accepts a list of split parameters and returns results for each item.\n    Each item is processed independently - if one fails, others will still be processed.\n    Results are returned in the same order as input items.\n\n    Each result contains either:\n    - success: {\"status\": \"success\", \"task_id\": \"...\", \"source_id\": \"...\"}\n    - error: {\"status\": \"error\", \"error\": \"...\", \"code\": \"...\", \"source_id\": \"...\"}\n    "
      tags:
      - Batch Stem Separation
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/BatchStemSeparatorSplitParameters'
        required: true
      security:
      - ApiKeyHeaderAuth: []
  /api/v1/split/batch/demuser/:
    post:
      operationId: batch_split_split_batch_demuser
      summary: Clean voice from background music for multiple files
      parameters: []
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/BatchTasksResponse'
        '400':
          description: Bad Request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CommonErrorResponse'
        '422':
          description: Unprocessable Entity
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CommonErrorResponse'
      description: "\n    Batch version of /split/demuser/. Accepts a list of split parameters and returns results for each item.\n    Each item is processed independently - if one fails, others will still be processed.\n    Results are returned in the same order as input items.\n\n    Each result contains either:\n    - success: {\"status\": \"success\", \"task_id\": \"...\", \"source_id\": \"...\"}\n    - error: {\"status\": \"error\", \"error\": \"...\", \"code\": \"...\", \"source_id\": \"...\"}\n    "
      tags:
      - Batch Stem Separation
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/BatchDemuserSplitParameters'
        required: true
      security:
      - ApiKeyHeaderAuth: []
  /api/v1/split/batch/voice_clean/:
    post:
      operationId: batch_split_split_batch_voice_clean
      summary: Clean voice from background noise for multiple files
      parameters: []
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/BatchTasksResponse'
        '400':
          description: Bad Request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CommonErrorResponse'
        '422':
          description: Unprocessable Entity
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CommonErrorResponse'
      description: "\n    Batch version of /split/voice_clean/. Accepts a list of split parameters and returns results for each item.\n    Each item is processed independently - if one fails, others will still be processed.\n    Results are returned in the same order as input items.\n\n    Each result contains either:\n    - success: {\"status\": \"success\", \"task_id\": \"...\", \"source_id\": \"...\"}\n    - error: {\"status\": \"error\", \"error\": \"...\", \"code\": \"...\", \"source_id\": \"...\"}\n    "
      tags:
      - Batch Stem Separation
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/BatchVoiceCleanSplitParameters'
        required: true
      security:
      - ApiKeyHeaderAuth: []
components:
  schemas:
    FilteringLevel:
      enum:
      - 0
      - 1
      - 2
      title: FilteringLevel
      type: integer
    SuccessfulTaskStart:
      properties:
        status:
          const: success
          default: success
          title: Status
          type: string
        task_id:
          description: ID of the created split task.
          example: e1fc1d8f-502e-4de0-bf3b-b30543d11c77
          title: Task Id
          type: string
        source_id:
          description: Source file ID.
          example: a1b2c3d4-5e6f-7g8h-9i0j-k1l2m3n4o5p6
          title: Source Id
          type: string
      required:
      - task_id
      - source_id
      title: SuccessfulTaskStart
      type: object
    VoiceCleanSplitParameters:
      properties:
        source_id:
          description: ID of the source file to be processed.
          example: 2fe8f214-1771-4900-9e7e-570f823bd359
          format: uuid4
          title: Source Id
          type: string
        presets:
          $ref: '#/components/schemas/VoiceCleanPresetsV1'
        idempotency_key:
          anyOf:
          - format: uuid4
            type: string
          - type: 'null'
          default: null
          description: '

            Unique uuid4 key to ensure idempotent requests.


            Prevents duplicate task execution with the same parameters.


            Can be reused until the task starts. Once processing begins, reusing this key will return an error.

            '
          title: Idempotency Key
      required:
      - source_id
      - presets
      title: VoiceCleanSplitParameters
      type: object
    TaskStartErrorCodes:
      enum:
      - idempotency_key_used
      - internal_error
      title: TaskStartErrorCodes
      type: string
    ExtractionLevel:
      enum:
      - deep_extraction
      - clear_cut
      title: ExtractionLevel
      type: string
    BatchTasksResponse:
      properties:
        results:
          description: List of task start results in the same order as input parameters.
          items:
            discriminator:
              mapping:
                error: '#/components/schemas/FailedTaskStart'
                success: '#/components/schemas/SuccessfulTaskStart'
              propertyName: status
            oneOf:
            - $ref: '#/components/schemas/SuccessfulTaskStart'
            - $ref: '#/components/schemas/FailedTaskStart'
          title: Results
          type: array
      required:
      - results
      title: BatchTasksResponse
      type: object
    StemSeparatorSplitParameters:
      properties:
        source_id:
          description: ID of the source file to be processed.
          example: 2fe8f214-1771-4900-9e7e-570f823bd359
          format: uuid4
          title: Source Id
          type: string
        presets:
          $ref: '#/components/schemas/StemSeparatorSplitterPresetsV1'
        idempotency_key:
          anyOf:
          - format: uuid4
            type: string
          - type: 'null'
          default: null
          description: '

            Unique uuid4 key to ensure idempotent requests.


            Prevents duplicate task execution with the same parameters.


            Can be reused until the task starts. Once processing begins, reusing this key will return an error.

            '
          title: Idempotency Key
      required:
      - source_id
      - presets
      title: StemSeparatorSplitParameters
      type: object
    LicenseErrorCodes:
      enum:
      - exceeded_duration
      - batch_not_avaliable
      - max_duration
      - exceeded_size
      title: LicenseErrorCodes
      type: string
    BatchDemuserSplitParameters:
      properties:
        items:
          description: List of split parameters to process.
          items:
            $ref: '#/components/schemas/DemuserSplitParameters'
          maxItems: 100
          minItems: 1
          title: Items
          type: array
      required:
      - items
      title: BatchDemuserSplitParameters
      type: object
    FailedTaskStart:
      properties:
        status:
          const: error
          default: error
          title: Status
          type: string
        error:
          description: Error message describing why the task failed to start.
          example: Idempotency key has already been used.
          title: Error
          type: string
        code:
          anyOf:
          - $ref: '#/components/schemas/TaskStartErrorCodes'
          - $ref: '#/components/schemas/LicenseErrorCodes'
          description: Error code.
          example: idempotency_key_used
          title: Code
        source_id:
          description: Source file ID.
          example: a1b2c3d4-5e6f-7g8h-9i0j-k1l2m3n4o5p6
          title: Source Id
          type: string
      required:
      - error
      - code
      - source_id
      title: FailedTaskStart
      type: object
    CommonErrorResponse:
      properties:
        detail:
          anyOf:
          - type: string
          - additionalProperties: true
            type: object
          - items:
              additionalProperties: true
              type: object
            type: array
          description: Error details
          example:
            detail:
            - loc:
              - body
              - split_input
              - source_id
              msg: Field required
              type: missing
            - loc:
              - body
              - split_input
              - presets
              msg: Field required
              type: missing
          title: Detail
      required:
      - detail
      title: CommonErrorResponse
      type: object
    StemSeparatorSplitterPresetsV1:
      properties:
        splitter:
          allOf:
          - $ref: '#/components/schemas/SplitterType'
          default: auto
          description: Splitter model to use. 'auto' selects the latest available model for the selected stems.
        dereverb_enabled:
          default: false
          description: '

            Enabling dereverb removes echo from the audio for clarity, which may slightly alter the voice.


            Disabling dereverb preserves the natural echo of the recording for authenticity.

            Only for {''vocals'', ''voice''} stems.'
          title: Dereverb Enabled
          type: boolean
        encoder_format:
          anyOf:
          - $ref: '#/components/schemas/EncoderFormat'
          - type: 'null'
          default: null
          description: Format for output audio. If None - convert to source file format.
        stem:
          description: Stem to extract. ['synthesizer', 'strings', 'wind'] are available only phoenix splitter.
          enum:
          - vocals
          - drum
          - piano
          - bass
          - electric_guitar
          - acoustic_guitar
          - synthesizer
          - strings
          - wind
          example: vocals
          title: Stem
          type: string
        multivocal:
          anyOf:
          - const: lead_back
            type: string
          - type: 'null'
          default: null
          description: Use parameter 'lead_back' and receive both lead and backing vocals as separate stems vocals@0 and vocals@1
          title: Multivocal
        extraction_level:
          allOf:
          - $ref: '#/components/schemas/ExtractionLevel'
          default: deep_extraction
          description: '

            Clear Cut: minimizes cross-bleeding between stems, resulting in a cleaner output, but may suppress finer details.


            Deep Extraction: captures more intricate details but increases the risk of cross-bleeding, which may lead to some overlap between stems.


            Andromeda splitter is not affected by this parameter and has its own fixed extraction behavior.

            '
      required:
      - stem
      title: StemSeparatorSplitterPresetsV1
      type: object
    VoiceCleanPresetsV1:
      properties:
        splitter:
          allOf:
          - $ref: '#/components/schemas/SplitterType'
          default: auto
          description: Splitter model to use. 'auto' selects the latest available model for the selected stems.
        dereverb_enabled:
          default: false
          description: '

            Enabling dereverb removes echo from the audio for clarity, which may slightly alter the voice.


            Disabling dereverb preserves the natural echo of the recording for authenticity.

            Only for {''vocals'', ''voice''} stems.'
          title: Dereverb Enabled
          type: boolean
        encoder_format:
          anyOf:
          - $ref: '#/components/schemas/EncoderFormat'
          - type: 'null'
          default: null
          description: Format for output audio. If None - convert to source file format.
        stem:
          const: voice
          description: Stem to extract. Only 'voice' stem is supported.
          example: voice
          title: Stem
          type: string
        noise_cancelling_level:
          allOf:
          - $ref: '#/components/schemas/FilteringLevel'
          default: 0
          description: Level of noise cancelling to apply.
      required:
      - stem
      title: VoiceCleanPresetsV1
      type: object
    DemuserSplitParameters:
      properties:
        source_id:
          description: ID of the source file to be processed.
          example: 2fe8f214-1771-4900-9e7e-570f823bd359
          format: uuid4
          title: Source Id
          type: string
        presets:
          $ref: '#/components/schemas/DemuserSplitterPresetsV1'
        idempotency_key:
          anyOf:
          - format: uuid4
            type: string
          - type: 'null'
          default: null
          description: '

            Unique uuid4 key to ensure idempotent requests.


            Prevents duplicate task execution with the same parameters.


            Can be reused until the task starts. Once processing begins, reusing this key will return an error.

            '
          title: Idempotency Key
      required:
      - source_id
      - presets
      title: DemuserSplitParameters
      type: object
    DemuserSplitterPresetsV1:
      properties:
        splitter:
          allOf:
          - $ref: '#/components/schemas/SplitterType'
          default: auto
          description: Splitter model to use. 'auto' selects the latest available model for the selected stems.
        dereverb_enabled:
          default: false
          description: '

            Enabling dereverb removes echo from the audio for clarity, which may slightly alter the voice.


            Disabling dereverb preserves the natural echo of the recording for authenticity.

            Only for {''vocals'', ''voice''} stems.'
          title: Dereverb Enabled
          type: boolean
        encoder_format:
          anyOf:
          - $ref: '#/components/schemas/EncoderFormat'
          - type: 'null'
          default: null
          description: Format for output audio. If None - convert to source file format.
        stem:
          const: music
          description: Stem to extract. Only 'music' stem is supported.
          example: music
          title: Stem
          type: string
      required:
      - stem
      title: DemuserSplitterPresetsV1
      type: object
    BatchStemSeparatorSplitParameters:
      properties:
        items:
          description: List of split parameters to process.
          items:
            $ref: '#/components/schemas/StemSeparatorSplitParameters'
          maxItems: 100
          minItems: 1
          title: Items
          type: array
      required:
      - items
      title: BatchStemSeparatorSplitParameters
      type: object
    BatchVoiceCleanSplitParameters:
      properties:
        items:
          description: List of split parameters to process.
          items:
            $ref: '#/components/schemas/VoiceCleanSplitParameters'
          maxItems: 100
          minItems: 1
          title: Items
          type: array
      required:
      - items
      title: BatchVoiceCleanSplitParameters
      type: object
    SplitterType:
      enum:
      - andromeda
      - perseus
      - orion
      - phoenix
      - lyra
      - lynx
      title: SplitterType
      type: string
    EncoderFormat:
      enum:
      - mp3
      - wav
      - flac
      - aac
      - ogg
      title: EncoderFormat
      type: string
  securitySchemes:
    ApiKeyHeaderAuth:
      type: apiKey
      in: header
      name: X-License-Key