Stable Image Ultra - Image Generator

Generate ultra-high quality images from text prompts using Stability AI's most advanced Stable Image Ultra model. This premium model delivers exceptional quality, detail, and artistic coherence for professional-grade image generation.

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 stable-image-ultra
promptObject	object	Yes	Configuration object containing all generation parameters

Prompt Object Parameters

Parameter	Type	Required	Description	Default
prompt	string	Yes	Text description of the image to generate	-
negativePrompt	string	No	Text describing what to avoid in the image	-
stable_image_ultra_aspect_ratio	string	No	Aspect ratio of the generated image	1:1
stable_image_ultra_seed	number	No	Random seed for reproducibility (0-4294967295)	Random
stable_image_ultra_style_preset	string	No	Artistic style preset	None
stable_image_ultra_output_format	string	No	Output image format	png
stable_image_ultra_strength	number	No	Control strength when using reference image (0.0-1.0), only set when having image	0.5
stable_image_ultra_image	string	No	Reference image path for image-to-image generation	-

Supported Aspect Ratios

Ratio	Description	Best For
1:1	Square format	Social media posts, avatars
16:9	Widescreen	Banners, headers, presentations
21:9	Ultra-wide	Panoramic views, cinematic shots
2:3	Portrait	Vertical photos, book covers
3:2	Landscape	Standard photography
4:5	Portrait social	Instagram posts, stories
5:4	Landscape social	Facebook covers, wide posts
9:16	Vertical video	TikTok, Instagram stories
9:21	Ultra-tall	Mobile screens, long banners

Style Presets

Style	Description
3d-model	3D rendered appearance with depth
analog-film	Vintage film photography aesthetic
anime	High-quality anime/manga style
cinematic	Professional movie-like quality
comic-book	Detailed comic book illustration
digital-art	Premium digital artwork style
enhance	Enhanced photorealism
fantasy-art	Epic fantasy illustration
isometric	Clean isometric perspective
line-art	Precise line art style
low-poly	Stylized low polygon 3D
modeling-compound	Professional clay modeling
neon-punk	Vibrant cyberpunk neon style
origami	Elegant paper folding art
photographic	Ultra-realistic photography
pixel-art	High-detail retro pixel art
tile-texture	Seamless professional texture

Output Formats

Format	Description
png	Ultra-high quality, lossless compression
jpeg	High quality with efficient compression
webp	Modern format with superior compression

Code Examples

cURL

curl --location 'https://api.1min.ai/api/features' \
--header 'API-KEY: <api-key>' \
--header 'Content-Type: application/json' \
--data '{
"type": "IMAGE_GENERATOR",
"model": "stable-image-ultra",
"promptObject": {
  "prompt": "An ethereal fantasy castle floating among clouds at golden hour, ultra detailed architecture",
  "negativePrompt": "blurry, low quality, distorted, pixelated",
  "stable_image_ultra_aspect_ratio": "16:9",
  "stable_image_ultra_seed": 42,
  "stable_image_ultra_style_preset": "fantasy-art",
  "stable_image_ultra_output_format": "png"
}
}'

JavaScript

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: 'stable-image-ultra',
  promptObject: {
    prompt: 'An ethereal fantasy castle floating among clouds at golden hour, ultra detailed architecture',
    negativePrompt: 'blurry, low quality, distorted, pixelated',
    stable_image_ultra_aspect_ratio: '16:9',
    stable_image_ultra_seed: 42,
    stable_image_ultra_style_preset: 'fantasy-art',
    stable_image_ultra_output_format: 'png'
  }
})
})

Python

import requests

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

data = {
"type": "IMAGE_GENERATOR",
"model": "stable-image-ultra",
"promptObject": {
  "prompt": "An ethereal fantasy castle floating among clouds at golden hour, ultra detailed architecture",
  "negativePrompt": "blurry, low quality, distorted, pixelated",
  "stable_image_ultra_aspect_ratio": "16:9",
  "stable_image_ultra_seed": 42,
  "stable_image_ultra_style_preset": "fantasy-art",
  "stable_image_ultra_output_format": "png"
}
}

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

Interactive Playground

API Playground

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

AI Model *Stable Image Ultra

Prompt *

Describe the image you want to generate in detail

An ethereal fantasy castle floating among clouds at golden hour, ultra detailed architecture

Negative Prompt

Describe what you want to avoid in the image

blurry, low quality, distorted, pixelated

Aspect Ratio

Choose aspect ratio for the generated image

1:1 (Square)16:9 (Widescreen)21:9 (Ultra-wide)2:3 (Portrait)3:2 (Landscape)4:5 (Portrait Social)5:4 (Landscape Social)9:16 (Vertical Video)9:21 (Ultra-tall)

Seed

Random seed for reproducibility (0-4294967295)

Style Preset

Artistic style preset for enhanced quality

None3D ModelAnalog FilmAnimeCinematicComic BookDigital ArtEnhanceFantasy ArtIsometricLine ArtLow PolyModeling CompoundNeon PunkOrigamiPhotographicPixel ArtTile Texture

Output Format

Format of the generated image

PNG (Ultra Quality)JPEG (Balanced)WebP (Modern)

Strength

Control strength when using reference image (0.0-1.0)

Reference Image

Path to reference image for image-to-image generation (from Asset API)

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": "stable-image-ultra",
  "promptObject": {
    "prompt": "An ethereal fantasy castle floating among clouds at golden hour, ultra detailed architecture",
    "negativePrompt": "blurry, low quality, distorted, pixelated",
    "stable_image_ultra_aspect_ratio": "16:9",
    "stable_image_ultra_seed": 42,
    "stable_image_ultra_style_preset": "fantasy-art",
    "stable_image_ultra_output_format": "png"
  }
}'

Response Format

{
"aiRecord": {
  "uuid": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
  "userId": "user-12345",
  "teamId": "team-67890",
  "teamUser": {
    "teamId": "team-67890",
    "userId": "user-12345",
    "userName": "John Doe",
    "userAvatar": "https://example.com/avatar.jpg",
    "status": "ACTIVE",
    "role": "ADMIN",
    "creditLimit": 100000000,
    "usedCredit": 25000,
    "createdAt": "2025-01-01T00:00:00.000Z",
    "createdBy": "SYSTEM",
    "updatedAt": "2025-01-15T10:30:00.000Z",
    "updatedBy": "SYSTEM"
  },
  "model": "stable-image-ultra",
  "type": "IMAGE_GENERATOR",
  "metadata": null,
  "rating": null,
  "feedback": null,
  "conversationId": null,
  "status": "SUCCESS",
  "createdAt": "2025-01-15T10:30:00.000Z",
  "aiRecordDetail": {
    "promptObject": {
      "prompt": "An ethereal fantasy castle floating among clouds at golden hour, ultra detailed architecture",
      "negativePrompt": "blurry, low quality, distorted, pixelated",
      "stable_image_ultra_aspect_ratio": "16:9",
      "stable_image_ultra_seed": 42,
      "stable_image_ultra_style_preset": "fantasy-art",
      "stable_image_ultra_output_format": "png"
    },
    "resultObject": [
      "development/images/2025_01_15_10_30_15_001_fantasy_castle_ultra.png"
    ],
    "responseObject": {}
  },
  "additionalData": null,
  "temporaryUrl": "https://s3.us-east-1.amazonaws.com/asset.1min.ai/development/images/2025_01_15_10_30_15_001_fantasy_castle_ultra.png?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=EXAMPLE_CREDENTIAL&X-Amz-Date=20250115T103000Z&X-Amz-Expires=604800&X-Amz-Signature=example_signature&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject"
}
}

Use Cases

• Professional Art: Create gallery-quality digital artwork
• Commercial Design: Generate premium visuals for advertising and marketing
• Concept Art: Develop detailed concept art for games, films, and projects
• Fine Art: Produce museum-quality artistic creations
• Architecture Visualization: Create detailed architectural renderings

Tips for Best Results

1. Ultra-Detailed Prompts: Be extremely specific and descriptive

   • Good: "Hyperrealistic portrait of an elderly wizard with intricate silver beard, piercing blue eyes, wearing ornate purple robes with golden embroidery, dramatic studio lighting"
   • Avoid: "Old wizard"

2. Professional Negative Prompts: Use comprehensive exclusions

   • Examples: "blurry, low quality, distorted, pixelated, amateur, watermark, text, logo, signature"

3. Aspect Ratios for Quality: Choose ratios that complement your subject

   • 16:9: Perfect for landscape and architectural scenes
   • 2:3: Ideal for portrait compositions
   • 1:1: Great for social media and balanced compositions

4. Style Presets for Premium Results:

   • photographic: For ultra-realistic images
   • fantasy-art: For epic fantasy illustrations
   • cinematic: For movie-quality scenes
   • digital-art: For premium digital artwork

5. Reference Images: Use the stable_image_ultra_image parameter for image-to-image generation

   • Upload reference image via Asset API first
   • Adjust strength parameter to control influence (0.3-0.8 recommended)

6. Seed Management: Use consistent seeds for series or variations

Advanced Features

Image-to-Image Generation

Stable Image Ultra supports using a reference image to guide generation:

1. Upload your reference image using the Asset API
2. Set stable_image_ultra_image to the uploaded image path
3. Adjust stable_image_ultra_strength to control how closely the output follows the reference
   • 0.3-0.5: Loose inspiration from reference
   • 0.5-0.7: Balanced influence
   • 0.7-1.0: Strong adherence to reference

Professional Quality Settings

• Ultra Mode: Generates at maximum quality settings
• Premium Styles: Advanced style presets for professional work
• Enhanced Detail: Superior fine detail generation
• Color Accuracy: Professional-grade color reproduction

Notes

• Stable Image Ultra is the premium tier with highest quality output
• Generation time is longer than Core model due to enhanced processing
• Best suited for professional and commercial applications
• Supports both text-to-image and image-to-image workflows
• Results maintain exceptional quality across all aspect ratios