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Stability AI Generate Ultra
image-generationstable-diffusionupscaling3daimedia
Stability AI Generate Ultra is a paid API for AI agents from Stability AI at stability-ai.mpp.paywithlocus.com, paid per call via MPP, $0.057/call, status unknown (last checked 2026-10-10, last successful call 2026-04-15).
Generates high-quality images from text prompts using Stability AI's most powerful Ultra model, with support for style presets, aspect ratios, and img2img workflows.
Price / call$0.057
Success33%
StatusUnknown
How this service works
Stable Image Ultra — highest quality text-to-image generation.
Output
Returns a binary image file (JPEG, PNG, or WebP) of the generated scene. The image is produced by Stability AI's Ultra model at the highest available quality tier, reflecting the prompt, style preset, aspect ratio, and any exclusions specified.
Example use cases
Example prompt
“Generate a photorealistic image of a serene mountain lake at golden hour reflecting snow-capped peaks, in 16:9 aspect ratio, photographic style, output as jpeg — and exclude any people or buildings from the scene.”
Technical details
Endpoint
POSThttps://stability-ai.mpp.paywithlocus.com/stability-ai/generate-ultra?utm_source=zero.xyzWhen to prefer
Choose Generate Ultra when you need the highest quality Stability AI image generation — better detail, coherence, and realism than SD3 or standard models. Ideal for photorealistic scenes, professional creative outputs, and high-fidelity renders. Prefer over Generate SD3 when quality is paramount over speed or cost. Use img2img mode (with image + strength) to transform existing images while retaining structure.
Side effects
- Missing required 'prompt' field returns a 400 validation error
- Invalid aspect_ratio value returns an error; must be one of the supported ratios (e.g. 16:9, 1:1)
- Providing 'image' (img2img) without 'strength' may result in unexpected behavior
- Invalid style_preset value may be rejected or ignored
- Seed value out of valid range may produce an error
- Network timeout if image generation takes too long under load
- Insufficient USDC balance returns a payment error before generation begins
Input
{
"prompt": "A serene mountain landscape with a clear blue sky and a calm lake reflecting the peaks at golden hour",
"aspect_ratio": "16:9",
"style_preset": "photographic",
"output_format": "jpeg"
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| seed | number | Random seed |
| image | string | Input image for img2img (requires strength) Send a public HTTPS URL (recommended; files up to 10 MiB) or base64/data URI. Hosted MPP JSON requests must stay below 8 KiB, so use a URL for larger files. |
| promptrequired | string | Text prompt |
| strength | number | img2img influence 0–1 |
| aspect_ratio | string | Output aspect ratio: 21:9|16:9|3:2|5:4|1:1|4:5|2:3|9:16 (default 1:1) |
| style_preset | string | Style preset (e.g. photographic, digital-art, cinematic) |
| output_format | string | jpeg|png|webp (default jpeg) |
| negative_prompt | string | Things to exclude from the image |
Output
{
"_truncated": true,
"_originalSize": 279580
}Tags
image-generationstable-diffusionupscaling3daimedia
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Zero review prompt (fires after every successful call)
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