Moonshot AI Batch API

openapi: 3.1.0
info:
  title: Moonshot AI Batch API
  version: 1.0.0
  description: API for Moonshot AI / Kimi large language model services
servers:
- url: https://api.moonshot.ai
  description: Production
tags:
- name: Batch
paths:
  /v1/batches:
    post:
      summary: Create Batch
      description: Create a batch task. You need to first upload a JSONL file with purpose="batch" via the Files API, then use the returned file_id to create the task.
      tags:
      - Batch
      security:
      - bearerAuth: []
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/BatchCreateRequest'
      responses:
        '200':
          description: The created batch task
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/BatchObject'
        '400':
          description: Bad request - Invalid parameters
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '401':
          description: Unauthorized - Invalid or missing API key
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '500':
          description: Server error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
    get:
      summary: List Batches
      description: List batch tasks for your organization.
      tags:
      - Batch
      security:
      - bearerAuth: []
      parameters:
      - name: after
        in: query
        required: false
        description: Pagination cursor, pass the ID of the last batch from the previous page
        schema:
          type: string
      - name: limit
        in: query
        required: false
        description: Number of results per page, default 20
        schema:
          type: integer
          default: 20
      responses:
        '200':
          description: List of batch tasks
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/BatchListResponse'
        '401':
          description: Unauthorized - Invalid or missing API key
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '500':
          description: Server error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
  /v1/batches/{batch_id}:
    get:
      summary: Retrieve Batch
      description: Retrieve the status and details of a specific batch task.
      tags:
      - Batch
      security:
      - bearerAuth: []
      parameters:
      - name: batch_id
        in: path
        required: true
        description: The ID of the batch task
        schema:
          type: string
      responses:
        '200':
          description: Batch task details
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/BatchObject'
        '401':
          description: Unauthorized - Invalid or missing API key
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '404':
          description: Batch task not found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '500':
          description: Server error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
  /v1/batches/{batch_id}/cancel:
    post:
      summary: Cancel Batch
      description: Cancel an in-progress batch task. The status will change to cancelling and then to cancelled. Only tasks in validating, in_progress, or finalizing status can be cancelled.
      tags:
      - Batch
      security:
      - bearerAuth: []
      parameters:
      - name: batch_id
        in: path
        required: true
        description: The ID of the batch task
        schema:
          type: string
      responses:
        '200':
          description: The cancelled batch task
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/BatchObject'
        '400':
          description: Bad request - Task status does not allow cancellation
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '401':
          description: Unauthorized - Invalid or missing API key
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '404':
          description: Batch task not found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '500':
          description: Server error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
components:
  schemas:
    BatchListResponse:
      type: object
      properties:
        object:
          type: string
          example: list
        data:
          type: array
          items:
            $ref: '#/components/schemas/BatchObject'
        has_more:
          type: boolean
          description: Whether there are more results
      required:
      - object
      - data
    ErrorResponse:
      type: object
      properties:
        error:
          type: object
          properties:
            message:
              type: string
              description: Error message describing what went wrong
            type:
              type: string
              description: Error type
            code:
              type: string
              description: Error code
          required:
          - message
      required:
      - error
    BatchObject:
      type: object
      properties:
        id:
          type: string
          description: Unique identifier for the batch task
        object:
          type: string
          description: Object type, always batch
          example: batch
        endpoint:
          type: string
          description: Request endpoint
        input_file_id:
          type: string
          description: Input file ID
        completion_window:
          type: string
          description: Processing time window
        status:
          type: string
          description: 'Current status: validating, failed, in_progress, finalizing, completed, expired, cancelling, cancelled'
          enum:
          - validating
          - failed
          - in_progress
          - finalizing
          - completed
          - expired
          - cancelling
          - cancelled
        output_file_id:
          type:
          - string
          - 'null'
          description: Output file ID for successful results
        error_file_id:
          type:
          - string
          - 'null'
          description: Error file ID for failed results
        created_at:
          type: integer
          description: Creation timestamp (Unix)
        in_progress_at:
          type:
          - integer
          - 'null'
          description: Execution start timestamp (Unix)
        expires_at:
          type:
          - integer
          - 'null'
          description: Expiration timestamp (Unix)
        finalizing_at:
          type:
          - integer
          - 'null'
          description: Result preparation start timestamp (Unix)
        completed_at:
          type:
          - integer
          - 'null'
          description: Completion timestamp (Unix)
        failed_at:
          type:
          - integer
          - 'null'
          description: Validation failure timestamp (Unix)
        cancelling_at:
          type:
          - integer
          - 'null'
          description: Cancellation request timestamp (Unix)
        cancelled_at:
          type:
          - integer
          - 'null'
          description: Cancellation completion timestamp (Unix)
        request_counts:
          $ref: '#/components/schemas/BatchRequestCounts'
        metadata:
          type:
          - object
          - 'null'
          description: Custom metadata
          additionalProperties:
            type: string
      required:
      - id
      - object
      - endpoint
      - input_file_id
      - completion_window
      - status
      - created_at
      - request_counts
    BatchCreateRequest:
      type: object
      properties:
        input_file_id:
          type: string
          description: ID of the input file, must be a .jsonl file uploaded with purpose="batch"
        endpoint:
          type: string
          description: Request endpoint, currently only /v1/chat/completions is supported
          enum:
          - /v1/chat/completions
        completion_window:
          type: string
          description: Time window for task processing, supports formats like 12h, 1d, 3d, minimum 12h, maximum 7d
        metadata:
          type: object
          description: Custom metadata, up to 16 key-value pairs, key max 64 chars, value max 512 chars
          additionalProperties:
            type: string
            maxLength: 512
      required:
      - input_file_id
      - endpoint
      - completion_window
    BatchRequestCounts:
      type: object
      properties:
        completed:
          type: integer
          description: Number of completed requests
        failed:
          type: integer
          description: Number of failed requests
        total:
          type: integer
          description: Total number of requests
      required:
      - completed
      - failed
      - total
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: The Authorization header expects a Bearer token. Use an MOONSHOT_API_KEY as the token. This is a server-side secret key. Generate one on the [API keys page](https://platform.kimi.ai/console/api-keys) in your dashboard.