Leonardo Diffusion XL - Image Generator

Advanced diffusion-based AI image generation model by Leonardo AI. Delivers exceptional artistic quality with sophisticated diffusion algorithms, superior detail reproduction, creative versatility, and comprehensive controls including Alchemy enhancement, Prompt Magic, and professional-grade features for artistic applications.

Endpoint

POSThttps://api.1min.ai/api/features

Request Headers

Field	Value
API-KEY	`<api-key>`
Content-Type	`application/json`

Parameters

Parameter	Type	Required	Description
`type`	string	Yes	Feature type identifier. Must be `IMAGE_GENERATOR`
`model`	string	Yes	AI model identifier. Must be `1e60896f-3c26-4296-8ecc-53e2afecc132`
`promptObject`	object	Yes	Configuration object containing all generation parameters

Prompt Object Parameters

Basic Parameters

Parameter	Type	Required	Description	Default
`prompt`	string	Yes	Text description of the image to generate	-
`size`	string	Yes	Generated image dimensions	1024x1024
`n`	number	Yes	Number of images to generate (1-4)	1
`negativePrompt`	string	No	Describe what you don't want in the image	-

Leonardo Common Parameters

Parameter	Type	Required	Description	Default	Range
`leonardo_guidance_scale`	integer	No	How strongly generation reflects the prompt	7	1-20
`leonardo_num_inference_steps`	integer	No	Number of inference steps for generation	15	10-60
`leonardo_seed`	integer	No	Fixed seed for consistency across generations	-	0-9999999998
`leonardo_tilling`	boolean	No	Whether images should tile on all axes	false	-
`leonardo_transparency`	string	No	Type of transparency to use	-	disabled, foreground_only
`leonardo_preset_style`	string	No	Style preset for generation	-	Dynamic based on Alchemy settings

Image Guidance Parameters

Parameter	Type	Required	Description	Default	Range
`leonardo_image_prompts`	array	No	Upload images to use as image prompts	-	Max 4 images
`leonardo_init_image_id`	string	No	Init image ID to influence generation features	-	Required for Fantasy Avatar
`leonardo_init_strength`	float	No	How strongly generated images reflect init image	-	0.1-0.9
`leonardo_fantasy_avatar`	boolean	No	Enable Fantasy Avatar feature (requires Init Image ID when enabled)	false	-

Alchemy Parameters

Parameter	Type	Required	Description	Default	Range
`leonardo_alchemy`	boolean	No	Enable Alchemy enhancement	true	-
`leonardo_contrast_ratio`	float	No	Contrast ratio for Alchemy	-	0-1
`leonardo_expanded_domain`	boolean	No	Enable Expanded Domain feature	false	-
`leonardo_photo_real`	boolean	No	Enable PhotoReal feature	false	-
`leonardo_photo_real_version`	string	No	PhotoReal version (automatically set to v2 when PhotoReal is enabled)	v2	v2
`leonardo_photo_real_strength`	float	No	PhotoReal depth of field (v1 only)	0.55	0.45, 0.5, 0.55

Prompt Magic Parameters

Parameter	Type	Required	Description	Default	Range
`leonardo_prompt_magic`	boolean	No	Enable Prompt Magic	false	-
`leonardo_prompt_magic_version`	string	No	Prompt Magic version	v3	v2, v3
`leonardo_prompt_magic_strength`	float	No	Strength of Prompt Magic	-	0.1-1.0
`leonardo_hight_constrast`	boolean	No	Enable High Contrast (controls RAW mode)	false	-
`leonardo_hight_resolution`	boolean	No	Enable High Resolution	false	-

Enhance Prompt Parameters

Parameter	Type	Required	Description	Default
`leonardo_enhance_prompt`	boolean	No	Enable prompt enhancement	false
`leonardo_enhance_prompt_instruction`	string	No	Instructions for prompt enhancement	-

Supported Image Sizes

Size	Resolution	Use Case
512x512	Standard square	Quick iterations, concepts
1024x768	Landscape	Wide compositions, scenes
768x1024	Portrait	Vertical compositions, characters
1024x1024	High-res square	High-quality artistic work

Diffusion XL Features

Feature	Description
Advanced Diffusion Algorithms	Sophisticated mathematical models for superior image generation
Exceptional Detail Reproduction	Fine detail preservation and enhancement capabilities
Artistic Versatility	Wide range of artistic styles and creative applications
Alchemy Enhancement	Advanced AI processing for professional-grade output
Prompt Magic	AI-powered prompt expansion and optimization
PhotoReal Technology	Photorealistic image generation capabilities
High Resolution	Enhanced detail and clarity for professional work
Creative Control	Comprehensive parameters for artistic direction

Code Examples

cURL
JavaScript
Python

curl --location 'https://api.1min.ai/api/features' \
--header 'API-KEY: <api-key>' \
--header 'Content-Type: application/json' \
--data '{
"type": "IMAGE_GENERATOR",
"model": "1e60896f-3c26-4296-8ecc-53e2afecc132",
"promptObject": {
  "prompt": "digital art masterpiece, fantasy landscape with floating islands, ethereal lighting, detailed environment",
  "negativePrompt": "low quality, blurry, amateur, simple, plain",
  "size": "1024x1024",
  "n": 1,
  "leonardo_alchemy": true,
  "leonardo_guidance_scale": 9,
  "leonardo_num_inference_steps": 30,
  "leonardo_prompt_magic": true,
  "leonardo_prompt_magic_version": "v3",
  "leonardo_hight_resolution": true
}
}'

fetch('https://api.1min.ai/api/features', {
method: 'POST',
headers: {
  'Content-Type': 'application/json',
  'API-KEY': 'YOUR_API_KEY'
},
body: JSON.stringify({
  type: 'IMAGE_GENERATOR',
  model: '1e60896f-3c26-4296-8ecc-53e2afecc132',
  promptObject: {
    prompt: 'digital art masterpiece, fantasy landscape with floating islands, ethereal lighting, detailed environment',
    negativePrompt: 'low quality, blurry, amateur, simple, plain',
    size: '1024x1024',
    n: 1,
    leonardo_alchemy: true,
    leonardo_guidance_scale: 9,
    leonardo_num_inference_steps: 30,
    leonardo_prompt_magic: true,
    leonardo_prompt_magic_version: 'v3',
    leonardo_hight_resolution: true
  }
})
})

import requests

url = "https://api.1min.ai/api/features"
headers = {
"Content-Type": "application/json",
"API-KEY": "YOUR_API_KEY"
}

data = {
"type": "IMAGE_GENERATOR",
"model": "1e60896f-3c26-4296-8ecc-53e2afecc132",
"promptObject": {
  "prompt": "digital art masterpiece, fantasy landscape with floating islands, ethereal lighting, detailed environment",
  "negativePrompt": "low quality, blurry, amateur, simple, plain",
  "size": "1024x1024",
  "n": 1,
  "leonardo_alchemy": True,
  "leonardo_guidance_scale": 9,
  "leonardo_num_inference_steps": 30,
  "leonardo_prompt_magic": True,
  "leonardo_prompt_magic_version": "v3",
  "leonardo_hight_resolution": True
}
}

response = requests.post(url, headers=headers, json=data)

Interactive Playground

API Playground

https://api.1min.ai/api/features

Prompt *

Describe the image you want to generate

Negative Prompt

Describe what you don't want in the image

Image Size *

Generated image dimensions

Number of Images *

Number of images to generate (1-4)

Guidance Scale

How strongly generation reflects the prompt (1-20)

Inference Steps

Number of inference steps (10-60)

Seed

Fixed seed for consistency (0-9999999998)

Tilling

Enable tiling on all axes

Transparency

Type of transparency to use

Alchemy

Enable Alchemy enhancement

Contrast Ratio

Alchemy contrast ratio (0-1)

Expanded Domain

Enable Expanded Domain feature

Photo Real

Enable PhotoReal feature

Init Strength

How strongly generated images reflect init image (0.1-0.9)

Fantasy Avatar

Enable Fantasy Avatar feature (requires Init Image ID when enabled)

Prompt Magic

Enable Prompt Magic

Prompt Magic Version

Prompt Magic version (v2 or v3)

Prompt Magic Strength

Strength of Prompt Magic (0.1-1.0)

High Contrast

Enable High Contrast (controls RAW mode)

High Resolution

Enable High Resolution

Enhance Prompt

Enable prompt enhancement

Enhance Prompt Instruction

Instructions for prompt enhancement

Generated cURL Command:

curl -X POST "https://api.1min.ai/api/features" \
  -H "API-KEY: <your-api-key>" \
  -H "Content-Type: application/json" \
  -d '{
  "type": "IMAGE_GENERATOR",
  "model": "1e60896f-3c26-4296-8ecc-53e2afecc132",
  "promptObject": {
    "prompt": "digital art masterpiece, fantasy landscape with floating islands, ethereal lighting, detailed environment",
    "negativePrompt": "low quality, blurry, amateur, simple, plain",
    "size": "1024x1024",
    "n": 1,
    "leonardo_alchemy": true,
    "leonardo_guidance_scale": 9,
    "leonardo_num_inference_steps": 30
  }
}'

Response Format

{
"aiRecord": {
  "uuid": "e4f5g6h7-i8j9-0123-4567-890123defghi",
  "userId": "user-12345",
  "teamId": "team-67890",
  "model": "1e60896f-3c26-4296-8ecc-53e2afecc132",
  "type": "IMAGE_GENERATOR",
  "status": "SUCCESS",
  "createdAt": "2025-01-15T10:50:00.000Z",
  "aiRecordDetail": {
    "promptObject": {
      "prompt": "digital art masterpiece, fantasy landscape with floating islands, ethereal lighting, detailed environment",
      "negativePrompt": "low quality, blurry, amateur, simple, plain",
      "size": "1024x1024",
      "n": 1,
      "leonardo_alchemy": true,
      "leonardo_guidance_scale": 9,
      "leonardo_num_inference_steps": 30,
      "leonardo_prompt_magic": true,
      "leonardo_prompt_magic_version": "v3",
      "leonardo_hight_resolution": true
    },
    "resultObject": [
      "development/images/2025_01_15_10_50_45_001_diffusion_art.webp"
    ]
  },
  "temporaryUrl": "https://s3.us-east-1.amazonaws.com/asset.1min.ai/development/images/2025_01_15_10_50_45_001_diffusion_art.webp?X-Amz-Algorithm=AWS4-HMAC-SHA256&..."
}
}

Use Cases

Professional Art & Design

Digital Art: High-quality illustrations, concept art, and digital paintings
Commercial Design: Marketing materials, brand imagery, and promotional content
Fine Art: Artistic expressions, abstract compositions, and creative explorations
Print Media: High-resolution artwork for publications, posters, and displays
Web Design: Website graphics, headers, backgrounds, and visual elements

Creative & Entertainment

Concept Art: Game development, movie pre-production, and creative projects
Fantasy Art: Magical landscapes, creatures, characters, and mythical scenes
Science Fiction: Futuristic environments, technology concepts, and space scenes
Artistic Studies: Style exploration, technique development, and creative learning
Portfolio Work: Professional artwork for artistic portfolios and exhibitions

Technical & Professional

Architectural Visualization: Building concepts, interior design, and spatial planning
Product Visualization: Design concepts, prototypes, and marketing imagery
Educational Materials: Instructional graphics, diagrams, and learning aids
Research Visualization: Scientific concepts, data representation, and technical illustrations
Documentation: Technical manuals, guides, and reference materials

Endpoint​

Request Headers​

Parameters​

Prompt Object Parameters​

Basic Parameters​

Leonardo Common Parameters​

Image Guidance Parameters​

Alchemy Parameters​

Prompt Magic Parameters​

Enhance Prompt Parameters​

Supported Image Sizes​

Diffusion XL Features​

Code Examples​

Interactive Playground​