Model Information

Display Name: Stable Image Ultra

API Model ID: stability-ai/stable-image-ultra

Category: Text To Image

Description: Stable Image Ultra is Stability AI's most advanced text-to-image service, built on the most capable Stable Diffusion 3.5 models. It produces the highest-quality, photorealistic outputs with exceptional prompt understanding. **Key Features:** - State-of-the-art photorealism at 1 megapixel (default 1024x1024) - Outstanding typography and complex multi-subject compositions - Dynamic lighting, vibrant color and strong overall cohesion - Text-to-image and image-to-image (with strength control) - Word-level prompt weighting via (word:weight) syntax **Best For:** - Professional print media and large-format applications - Hero images requiring maximum detail and realism - Typography-heavy and intricate compositions

How to Use This Model

To use Stable Image Ultra via the HInow.ai API, use the model ID: stability-ai/stable-image-ultra

API Request Example (Chat/Text)

POST https://api.hinow.ai/v1/chat/completions
Authorization: Bearer YOUR_API_KEY
Content-Type: application/json

{
  "model": "stability-ai/stable-image-ultra",
  "messages": [
    {"role": "user", "content": "Your message here"}
  ]
}
              

API Request Example (Image Generation)

POST https://api.hinow.ai/v1/images
Authorization: Bearer YOUR_API_KEY
Content-Type: application/json

{
  "model": "stability-ai/stable-image-ultra",
  "prompt": "Your image description here"
}
              

Pricing

• total: $0.12

Available Parameters

• aspect_ratio: Aspect ratio of the generated image. (Options: 1:1, 16:9, 9:16, 3:2, 2:3, 4:5, 5:4, 21:9, 9:21)
• negative_prompt: Keywords describing what you do NOT wish to see in the output image. Advanced feature.
• style_preset: Guides the image model towards a particular visual style. (Options: 3d-model, analog-film, anime, cinematic, comic-book, digital-art, enhance, fantasy-art, isometric, line-art, low-poly, modeling-compound, neon-punk, origami, photographic, pixel-art, tile-texture)
• strength: Image-to-image denoising strength (0-1). Required when an input image is provided: 0 keeps the input image, 1 ignores it.
• seed: Random seed for reproducibility. Use -1 (or omit) for a random seed.
• output_format: Output image format. (Options: jpeg, png, webp)

Quick Reference

To use this model, set: "model": "stability-ai/stable-image-ultra"

Featured: No

Documentation: https://hinow.ai/models/stability-ai/stable-image-ultra

API Endpoint: https://api.hinow.ai/v1