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

Advanced Diffusion Techniques

Prompt Engineering for Diffusion

Technical Terms:
- "digital art", "oil painting", "watercolor", "photorealistic", "hyperrealistic"
- "detailed", "intricate", "masterpiece", "high resolution", "professional quality"
- "soft lighting", "dramatic lighting", "volumetric lighting", "studio lighting"
Artistic Styles:
- "impressionist", "surreal", "abstract", "minimalist", "baroque", "art nouveau"
- "cyberpunk", "steampunk", "fantasy art", "concept art", "matte painting"
- "renaissance style", "modern art", "contemporary", "classical"
Composition Elements:
- "rule of thirds", "golden ratio", "leading lines", "symmetrical", "asymmetrical"
- "foreground", "middle ground", "background", "depth of field", "perspective"
- "wide angle", "close-up", "panoramic", "bird's eye view", "low angle"

Quality Enhancement Strategies

Parameter Optimization:
- Guidance Scale: 8-12 for detailed artistic work, 6-8 for creative freedom
- Inference Steps: 25-40 for high quality, 15-25 for faster generation
- Alchemy: Always enable for professional work
- High Resolution: Use for final artwork and print materials
Creative Control:
- Seed Consistency: Maintain style across series with fixed seeds
- Iterative Refinement: Use successful generations as base for improvements
- Style Transfer: Combine reference images with text prompts
- Batch Variations: Generate multiple versions for selection

Advanced Workflows

Professional Pipeline:
- Concept → Rough Generation → Refinement → Final Enhancement
- Use lower settings for concepts, high settings for finals
- Implement feedback loops and iterative improvements
Artistic Exploration:
- Style Studies: Explore different artistic movements and techniques
- Technique Mixing: Combine multiple artistic approaches
- Creative Experimentation: Push boundaries with unusual combinations
Commercial Production:
- Brief Analysis → Style Reference → Multiple Variations → Client Selection
- Maintain brand consistency across campaign materials
- Optimize for different media and applications

Diffusion-Specific Best Practices

Mathematical Precision

Diffusion Algorithm Understanding:
- Higher inference steps = more refinement iterations
- Guidance scale controls prompt adherence vs creative freedom
- Noise scheduling affects detail development
Quality vs Speed Balance:
- Production work: 30-50 steps, guidance 8-12
- Concept work: 15-25 steps, guidance 6-9
- Experimental: Variable settings for exploration

Artistic Direction

Style Consistency:
- Develop signature prompt templates
- Use consistent terminology across projects
- Maintain lighting and mood consistency
Detail Enhancement:
- Layer descriptions from general to specific
- Include texture and material descriptions
- Specify lighting conditions and atmosphere

Professional Standards

Output Quality:
- Always use Alchemy for client work
- Enable High Resolution for print materials
- Consider transparency options for design work
Workflow Efficiency:
- Create prompt libraries for common styles
- Establish quality checkpoints in production
- Implement version control for iterations

Credit Usage

Leonardo Diffusion XL generation costs by image size and quantity:

Size	1 Image	2 Images	3 Images	4 Images
512x512	234 credits	234 credits	260 credits	286 credits
1024x768	260 credits	312 credits	364 credits	416 credits
768x1024	260 credits	312 credits	364 credits	416 credits
1024x1024	286 credits	338 credits	416 credits	468 credits

Diffusion Quality Investment

Diffusion XL works best with higher inference steps and quality settings. Consider the cost-benefit ratio of enhanced settings for professional applications.

Notes

Diffusion Algorithm Advantage

Leonardo Diffusion XL uses advanced mathematical diffusion processes that excel at creating detailed, professional-quality artwork with sophisticated artistic elements.

Professional Applications

This model is specifically designed for professional artistic applications where quality, detail, and creative control are paramount considerations.

Computational Intensity

Diffusion algorithms can be computationally intensive. Higher inference steps and quality settings will increase generation time but produce superior results.

Authentication

This endpoint requires an API key to be provided in the API-KEY header.

Parameter	Type	Required	Description	Default
`prompt`	string	Yes	Text description of the image to generate	-
`negativePrompt`	string	Yes	Elements to exclude from the generated image	-
`size`	string	Yes	Generated image dimensions	1024x1024
`n`	number	Yes	Number of images to generate (1-4)	1

Supported Image Sizes

Size	Resolution	Use Case
1024x1024	1 megapixel	High-quality artistic images

Diffusion XL Features

Feature	Description
Advanced Diffusion	Sophisticated noise-to-image generation process
Artistic Excellence	Superior creative and artistic output quality
Detail Precision	Exceptional fine detail reproduction
Style Versatility	Wide range of artistic and photographic styles
Professional Quality	Commercial-grade artistic imagery

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": "Artistic landscape painting with dramatic lighting and rich textures",
  "negativePrompt": "blurry, low quality, distorted, oversaturated",
  "size": "1024x1024",
  "n": 1
}
}'

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: 'Artistic landscape painting with dramatic lighting and rich textures',
    negativePrompt: 'blurry, low quality, distorted, oversaturated',
    size: '1024x1024',
    n: 1
  }
})
})

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": "Artistic landscape painting with dramatic lighting and rich textures",
  "negativePrompt": "blurry, low quality, distorted, oversaturated",
  "size": "1024x1024",
  "n": 1
}
}

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

Interactive Playground

API Playground

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

AI Model *

Prompt *

Describe the image you want to generate

Negative Prompt *

Elements to exclude from the generated image

Image Size *

Generated image dimensions

Number of Images *

Number of images to generate (1-4)

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": "Artistic landscape painting with dramatic lighting and rich textures",
    "negativePrompt": "blurry, low quality, distorted, oversaturated",
    "size": "1024x1024",
    "n": 1
  }
}'

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": "Artistic landscape painting with dramatic lighting and rich textures",
      "negativePrompt": "blurry, low quality, distorted, oversaturated",
      "size": "1024x1024",
      "n": 1
    },
    "resultObject": [
      "development/images/2025_01_15_10_50_45_001_artistic_landscape.webp"
    ]
  },
  "temporaryUrl": "https://s3.us-east-1.amazonaws.com/asset.1min.ai/development/images/2025_01_15_10_50_45_001_artistic_landscape.webp?X-Amz-Algorithm=AWS4-HMAC-SHA256&..."
}
}

Use Cases

Fine Art Creation: High-quality artistic imagery and paintings
Digital Art: Professional digital artwork and illustrations
Creative Design: Artistic concepts and visual development
Gallery Exhibitions: Museum-quality digital art pieces
Commercial Art: Professional artistic content for brands

Tips for Best Results

Artistic Prompting:
- Include art movement references: "impressionist style", "abstract expressionism"
- Specify techniques: "oil painting", "watercolor", "digital art"
- Mention famous artists for style reference
Quality Enhancement:
- Use negative prompts to exclude unwanted artifacts
- Specify lighting and composition details
- Include texture and material descriptions
Creative Exploration:
- Experiment with artistic styles and movements
- Combine multiple artistic techniques
- Use detailed descriptive language for complex scenes

Notes

Diffusion Excellence

Leonardo Diffusion XL uses advanced diffusion algorithms to create highly detailed, artistic images with exceptional quality and creative versatility.

Authentication

This endpoint requires an API key to be provided in the API-KEY header.

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​

API Playground

Generated cURL Command:

Response Format​

Use Cases​

Professional Art & Design​

Creative & Entertainment​

Technical & Professional​

Advanced Diffusion Techniques​

Prompt Engineering for Diffusion​

Quality Enhancement Strategies​

Advanced Workflows​

Diffusion-Specific Best Practices​

Mathematical Precision​

Artistic Direction​

Professional Standards​

Credit Usage​

Notes​

Authentication​

Supported Image Sizes​

Diffusion XL Features​

Code Examples​

Interactive Playground​

API Playground

Generated cURL Command:

Response Format​

Use Cases​

Tips for Best Results​

Notes​

Authentication​

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

Response Format

Use Cases

Professional Art & Design

Creative & Entertainment

Technical & Professional

Advanced Diffusion Techniques

Prompt Engineering for Diffusion

Quality Enhancement Strategies

Advanced Workflows

Diffusion-Specific Best Practices

Mathematical Precision

Artistic Direction

Professional Standards

Credit Usage

Notes

Authentication

Supported Image Sizes

Diffusion XL Features

Code Examples

Interactive Playground

Response Format

Use Cases

Tips for Best Results

Notes

Authentication