Generate Images with Omni

December 10, 2025 (October 20, 2026)

Table of contents

1. Version Comparison
2. Request Headers
3. Request Body
   1. Reference Images
   2. Saved Elements
   3. Prompt Reference Syntax
   4. Scheduler Parameters
4. Responses
5. Model
6. Examples
7. Try It

---

This endpoint generates images using Kling’s Omni model (O1 and v3). It supports text-to-image generation with up to 10 reference images and/or saved elements that can be referenced in your prompt.

Version Comparison

Feature	v3	O1
Resolution	1k, 2k, 4k (VIP)	1k, 2k
Default aspect_ratio	auto	16:9
auto aspect ratio
story_mode (Series Mode)

https://api.useapi.net/v1/kling/images/omni

Request Headers

Authorization: Bearer {API token}
Content-Type: application/json
# Alternatively you can use multipart/form-data
# Content-Type: multipart/form-data

• API token is required, see Setup useapi.net for details.

Request Body

{
  "email": "[email protected]",
  "prompt": "A woman @image_1 dancing elegantly in a ballroom",
  "resolution": "2k",
  "aspect_ratio": "16:9",
  "imageCount": 2,
  "story_mode": true,
  "image_1": "https://s21-kling.klingai.com/ai-platform/xxx/xxx.jpg"
}

• email is optional. Leave it out and the job goes to one of your accounts that has a free job slot, picked at random. Each account runs at most its maxJobs jobs at once, and GET scheduler/available shows the free slots. If no account has a free slot, the response is 429.
  Pass email to run the job on that account (429 if it is busy). Uploaded files, elements, voices, avatars and earlier tasks belong to one account, so pass the email of the account they came from.
  With more than one account, reading the task with GET tasks/task_id needs its account’s email. The response’s task.userId is that account’s session.userId in GET accounts, and GET scheduler lists each running task with its email.

• prompt is required, the text description of the image to generate. Maximum length: 1700 characters. Use @image_1, @image_2, etc. to reference images in your prompt. Use @element_1, @element_2, etc. (or @object_1, etc.) to reference saved elements.

• omni_version is optional, the Omni model version to use. Supported values: o1, v3 (default).

• resolution is optional, the resolution of the generated image. Supported values: 1k (default), 2k, 4k (v3 only, VIP required).

• aspect_ratio is optional, the aspect ratio of the generated image. Supported values: auto (v3 only), 16:9 (default for O1), 9:16, 1:1, 4:3, 3:4, 3:2, 2:3, 21:9. v3 defaults to auto. auto is NOT available for O1.

• imageCount is optional, the number of images to generate. Range: 1 to 9. Default: 1.

• story_mode is optional, enables Series Mode for coherent multi-image generation (v3 only). Requires at least one reference image or element. When enabled, generates a coherent set of images rather than independent generations. Default: false.

• unlimited is optional, enables unlimited generation mode for eligible Pro and above accounts (subscribed prior December 15, 2025). Default: false.

Reference Images

• image_1 through image_10 are optional, URLs of reference images. You can upload images using POST /assets. Reference in prompt using @image_1, @image_2, etc.

Saved Elements

• element_1 through element_10 are optional, IDs of saved elements. Create elements using POST /elements. Reference in prompt using @element_1 or @object_1, etc.

Note: Images and elements share the same pool of 10 slots. Combined total cannot exceed 10.

Prompt Reference Syntax

Input Type	Prompt Syntax	Example
Images	@image_1, @image_2, …	"A woman @image_1 in a ballroom"
Elements	@element_1 or @object_1, …	"Character @element_1 sitting..."

Scheduler Parameters

• maxJobs is optional, range from 1 to 50. Specifies the maximum number of concurrent jobs.

• replyUrl is optional, a callback URL to receive generation progress and result. See GET /tasks/task_id for response model.

• replyRef is optional, a reference identifier for the callback.

Responses

• 200
• 400
• 401
• 404
• 500

• 200 OK

  {
    "task": {
      "id": 123456789,
      "userId": 12345,
      "type": "mmu_omni_image",
      "scene": "NORMAL_CREATION",
      "status": 5,
      "status_name": "submitted",
      "status_final": false,
      "taskInfo": {
        "type": "mmu_omni_image",
        "inputs": [
          {
            "name": "image_1",
            "inputType": "URL",
            "token": null,
            "blobStorage": null,
            "url": "https://s21-kling.klingai.com/ai-platform/xxx/xxx.jpg",
            "cover": null,
            "fromWorkId": null
          }
        ],
        "arguments": [
          {
            "name": "prompt",
            "value": "A woman Image1 dancing elegantly in a ballroom"
          },
          {
            "name": "rich_prompt",
            "value": "A woman <<<image_1>>> dancing elegantly in a ballroom"
          },
          {
            "name": "kolors_version",
            "value": "3.0-omni"
          },
          {
            "name": "img_resolution",
            "value": "2k"
          },
          {
            "name": "aspect_ratio",
            "value": "16:9"
          },
          {
            "name": "imageCount",
            "value": "1"
          }
        ],
        "extraArgs": {},
        "callbackPayloads": [],
        "scene": "NORMAL_CREATION"
      },
      "favored": false,
      "deleted": false,
      "viewed": false,
      "createTime": 1733836800000,
      "updateTime": 1733836800000
    },
    "works": [],
    "status": 5,
    "status_name": "submitted",
    "status_final": false,
    "message": "",
    "limitation": {
      "type": "mmu_omni_image",
      "remaining": 10000,
      "limit": 10000
    },
    "userPoints": {
      "points": [],
      "total": 0
    },
    "userTickets": {
      "ticket": []
    },
    "editProject": null
  }
  

• 400 Bad Request

  The parameters are invalid. When Kling refuses the submitted parameters, error carries Kling’s own message.

  {
    "error": "<error message>"
  }
  

• 401 Unauthorized

  {
    "error": "Unauthorized",
    "code": 401
  }
  

• 404 Not Found

  {
    "error": "<error message>"
  }
  

• 500 Internal Server Error

  Kling uses a 500 response to indicate moderation and other issues with the input. It may be hard to separate actual 500 errors from moderation errors, so use the error field text and your best judgement to tell them apart, since the message field most often has very generic and perhaps misleading text.

  {
    "error": "The content you uploaded appears to violate the community guidelines. (CM_EXT.POther)",
    "message": "Service busy (CM_EXT.POther)"
  }
  

When successful, the response includes a task ID which can be used to check the status using GET /tasks/task_id.

Model

{ // TypeScript, all fields are optional
    task: {
        id: number
        userId: number
        type: string
        scene: string
        status: number
        status_name: 'submitted' | 'failed' | 'processing' | 'succeed'
        status_final: boolean
        taskInfo: {
            type: string
            inputs: Array<{
                name: string
                inputType: string
                token: string | null
                blobStorage: any | null
                url: string
                cover: string | null
                fromWorkId: number | null
            }>
            arguments: Array<{
                name: string
                value: string
            }>
            extraArgs: Record<string, any>
            callbackPayloads: any[]
            scene: string
        }
        favored: boolean
        deleted: boolean
        viewed: boolean
        createTime: number
        updateTime: number
        viewTime: number
    }
    works: Array<any>
    status: number
    status_name: 'submitted' | 'failed' | 'processing' | 'succeed'
    status_final: boolean
    message: string
    error: string
    limitation: {
        type: string
        remaining: number
        limit: number
    }
    userPoints: {
        points: Array<{
            orderId: string
            type: string
            amount: number
            balance: number
            startTime: number
            endTime: number
        }>
        total: number
    }
    userTickets: {
        ticket: Array<{
            orderId: string
            type: string
            packageType: string
            amount: number
            balance: number
            startTime: number
            endTime: number
        }>
    }
    editProject: any | null
}

Examples

• Curl
• JavaScript
• Python

• # Using reference image
  curl -X POST "https://api.useapi.net/v1/kling/images/omni" \
     -H "Content-Type: application/json" \
     -H "Authorization: Bearer ..." \
     -d '{
       "email": "[email protected]",
       "prompt": "A woman @image_1 dancing elegantly in a ballroom",
       "resolution": "2k",
       "aspect_ratio": "16:9",
       "image_1": "https://s21-kling.klingai.com/ai-platform/xxx/xxx.jpg"
     }'
  
  # Using story_mode (Series Mode) for coherent multi-image generation
  curl -X POST "https://api.useapi.net/v1/kling/images/omni" \
     -H "Content-Type: application/json" \
     -H "Authorization: Bearer ..." \
     -d '{
       "email": "[email protected]",
       "prompt": "A series of @image_1 in different seasons",
       "resolution": "2k",
       "aspect_ratio": "16:9",
       "imageCount": 3,
       "story_mode": true,
       "image_1": "https://s21-kling.klingai.com/ai-platform/xxx/xxx.jpg"
     }'
  
  # Using saved element
  curl -X POST "https://api.useapi.net/v1/kling/images/omni" \
     -H "Content-Type: application/json" \
     -H "Authorization: Bearer ..." \
     -d '{
       "email": "[email protected]",
       "prompt": "Character @element_1 in a garden setting",
       "resolution": "2k",
       "aspect_ratio": "16:9",
       "element_1": "u_123456789012345"
     }'
  

• const token = "API token";
  const email = "Previously configured account email";
  const apiUrl = "https://api.useapi.net/v1/kling/images/omni";
  const response = await fetch(apiUrl, {
    method: "POST",
    headers: {
      "Content-Type": "application/json",
      "Authorization": `Bearer ${token}`,
    },
    body: JSON.stringify({
      email: email,
      prompt: "Character @element_1 in a garden setting",
      resolution: "2k",
      aspect_ratio: "16:9",
      element_1: "u_123456789012345"
    })
  });
  const result = await response.json();
  console.log("response", {response, result});
  

• import requests
  token = "API token"
  email = "Previously configured account email"
  apiUrl = "https://api.useapi.net/v1/kling/images/omni"
  headers = {
      "Content-Type": "application/json",
      "Authorization" : f"Bearer {token}"
  }
  data = {
      "email": email,
      "prompt": "Character @element_1 in a garden setting",
      "resolution": "2k",
      "aspect_ratio": "16:9",
      "element_1": "u_123456789012345"
  }
  response = requests.post(apiUrl, headers=headers, json=data)
  print(response, response.json())
  

Try It

API Token (see Setup useapi.net) email (previously configured via POST /accounts) prompt (required, use @image_1, @element_1 to reference) omni_version v3 (default) o1 resolution (v3: 4k VIP) 1k (default) 2k 4k (v3, VIP) aspect_ratio (v3 default: auto) auto (v3 default) 16:9 (O1 default) 9:16 1:1 4:3 3:4 3:2 2:3 21:9 imageCount (1-9, default: 1) story_mode (v3 only, requires images/elements) true false unlimited (default: false, max 5 concurrent tasks) false (default) true image_1 (use POST /assets) image_2 image_3 element_1 (from GET /elements) element_2 element_3 maxJobs (1-50) replyUrl (callback URL) replyRef (reference ID)