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

# Kling 2.1 Master API Documentation

> Kling 2.1 Master offers significantly enhanced visual realism, smoother video playback, and more dramatic, compelling action sequences compared to the standard versions of Kling 2.1. Learn how to integrate it here. 

Check out Kling 2.1 Master API pricing [here](https://api.pollo.ai/pricing?modelName=kling-v2-1-master\&modelType=video), cheaper than Fal AI.


## OpenAPI

````yaml POST /generation/kling-ai/kling-v2-1-master
openapi: 3.0.3
info:
  title: Pollo | AI Video Collection
  description: ✨RESTful API Document
  version: 1.0.0
servers:
  - url: https://pollo.ai/api/platform
security: []
externalDocs:
  url: https://pollo.ai/api/platform/api/openapi.json
paths:
  /generation/kling-ai/kling-v2-1-master:
    post:
      tags:
        - generation
        - video generation
      summary: create video by text or image or reference image
      operationId: generation-kling-v2-1-master2video
      parameters: []
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                input:
                  anyOf:
                    - type: object
                      properties:
                        image:
                          type: string
                          format: uri
                          description: >-
                            Only image URLs are accepted (HTTPS preferred);
                            base64 is not allowed.
                                        Supported formats include JPG, PNG, and JPEG.
                                        Image aspect ratio must be less than 1:4 or 4:1.
                        prompt:
                          type: string
                          maxLength: 2500
                          description: The prompt of the generation
                        negativePrompt:
                          type: string
                          maxLength: 2500
                          description: The negative prompt of the generation
                        strength:
                          type: number
                          minimum: 0
                          maximum: 100
                          default: 50
                          description: The prompt strength of the generation
                        length:
                          type: number
                          enum:
                            - 5
                            - 10
                          default: 5
                          description: The length of the generation
                      required:
                        - image
                      additionalProperties: false
                      title: Image To Video
                    - type: object
                      properties:
                        prompt:
                          type: string
                          minLength: 1
                          maxLength: 2500
                          description: The prompt of the generation
                        aspectRatio:
                          type: string
                          enum:
                            - '16:9'
                            - '9:16'
                            - '1:1'
                          default: '16:9'
                        negativePrompt:
                          type: string
                          maxLength: 2500
                          description: The negative prompt of the generation
                        strength:
                          type: number
                          minimum: 0
                          maximum: 100
                          default: 50
                          description: The prompt strength of the generation
                        length:
                          type: number
                          enum:
                            - 5
                            - 10
                          default: 5
                          description: The length of the generation
                      required:
                        - prompt
                      additionalProperties: false
                      title: Text To Video
                webhookUrl:
                  type: string
                clientSource:
                  type: string
                  minLength: 1
                  maxLength: 100
              required:
                - input
              additionalProperties: false
      responses:
        '200':
          description: Successful response
          content:
            application/json:
              schema:
                type: object
                properties:
                  taskId:
                    type: string
                  status:
                    type: string
                    enum:
                      - waiting
                      - succeed
                      - failed
                      - processing
                required:
                  - taskId
                  - status
                additionalProperties: false
        default:
          $ref: '#/components/responses/error'
      security:
        - ApiKeyAuth: []
components:
  responses:
    error:
      description: Error response
      content:
        application/json:
          schema:
            type: object
            properties:
              message:
                type: string
              code:
                type: string
              issues:
                type: array
                items:
                  type: object
                  properties:
                    message:
                      type: string
                  required:
                    - message
                  additionalProperties: false
            required:
              - message
              - code
            additionalProperties: false
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: x-api-key
      description: API key to authorize requests

````