Stability Fast Upscale

Developer documentation

Stability Fast Upscale

Low-cost Stability AI upscaling that increases image resolution quickly.

Model Reference

Image generation and editing models

Prompt-to-image, image editing, image merging, upscaling, and background removal. Endpoint: https://omixa.cloud/api/v1/images/generations

Stability Fast Upscale

stability-upscale-fast

Low-cost Stability AI upscaling that increases image resolution quickly.

图像

Image per unit $0.020000

Minimum hold $0.010000

Integration reference

Connect Stability Fast Upscale

Use Omixa's unified endpoint and your workspace API key. Provider routing, billing, failover, and usage records are handled by Omixa.

POST https://omixa.cloud/api/v1/images/generations

Provider: stability
Endpoint type: stability_image_edit

Request schema

Request fields

Only send options supported by this model. Required fields and accepted values are listed below.

Field	类型	Required	Accepted values	描述
`model`	string	Yes	stability-upscale-fast	Use `stability-upscale-fast`. Omixa resolves the active provider route and failover key automatically.
`model`	string	Yes	Any valid value	The Omixa Stability tool slug.
`input_images`	array	Yes	Any valid value	Exactly one inline PNG, JPG, or WebP source image. Use `{type:"image_url", image_url:{url:"data:image/png;base64,..."}}`.
`output_format`	string	No	png, jpeg, webp	Preferred output file format.

Ready to send

Payload and response

Start with this model-safe payload and expect the normalized Omixa response shape shown beside it.

Example JSON payload

{
    "model": "stability-upscale-fast",
    "output_format": "png",
    "input_images": [
        {
            "type": "image_url",
            "image_url": {
                "url": "data:image/png;base64,<base64-image>"
            }
        }
    ]
}

Response shape

{
    "created": 1780660800,
    "data": [
        {
            "b64_json": "<base64-image>",
            "url": null
        }
    ],
    "usage": {
        "billed_amount": "0.039000"
    }
}

Language examples

Copy-ready integration code

Replace the example API key with a workspace key and keep model-specific fields unchanged unless the table above marks them optional.

curl -X POST https://omixa.cloud/api/v1/images/generations \
  -H "Authorization: Bearer omx_live_xxx" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "stability-upscale-fast",
    "output_format": "png",
    "input_images": [
        {
            "type": "image_url",
            "image_url": {
                "url": "data:image/png;base64,<base64-image>"
            }
        }
    ]
}'

const response = await fetch('https://omixa.cloud/api/v1/images/generations', {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer omx_live_xxx',
    'Content-Type': 'application/json'
  },
  body: "{\n    \"model\": \"stability-upscale-fast\",\n    \"output_format\": \"png\",\n    \"input_images\": [\n        {\n            \"type\": \"image_url\",\n            \"image_url\": {\n                \"url\": \"data:image/png;base64,<base64-image>\"\n            }\n        }\n    ]\n}"
});
const data = await response.json();

import requests

response = requests.post(
    'https://omixa.cloud/api/v1/images/generations',
    headers={'Authorization': 'Bearer omx_live_xxx', 'Content-Type': 'application/json'},
    json={
    "model": "stability-upscale-fast",
    "output_format": "png",
    "input_images": [
        {
            "type": "image_url",
            "image_url": {
                "url": "data:image/png;base64,<base64-image>"
            }
        }
    ]
}
)
print(response.json())

$ch = curl_init('https://omixa.cloud/api/v1/images/generations');
curl_setopt_array($ch, [
    CURLOPT_POST => true,
    CURLOPT_HTTPHEADER => ['Authorization: Bearer omx_live_xxx', 'Content-Type: application/json'],
    CURLOPT_POSTFIELDS => '{
    "model": "stability-upscale-fast",
    "output_format": "png",
    "input_images": [
        {
            "type": "image_url",
            "image_url": {
                "url": "data:image/png;base64,<base64-image>"
            }
        }
    ]
}',
    CURLOPT_RETURNTRANSFER => true,
]);
$response = curl_exec($ch);

using var client = new HttpClient();
client.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", "omx_live_xxx");
var json = @"{
    ""model"": ""stability-upscale-fast"",
    ""output_format"": ""png"",
    ""input_images"": [
        {
            ""type"": ""image_url"",
            ""image_url"": {
                ""url"": ""data:image/png;base64,<base64-image>""
            }
        }
    ]
}";
var response = await client.PostAsync("https://omixa.cloud/api/v1/images/generations", new StringContent(json, System.Text.Encoding.UTF8, "application/json"));
var body = await response.Content.ReadAsStringAsync();

payload := []byte(`{
    "model": "stability-upscale-fast",
    "output_format": "png",
    "input_images": [
        {
            "type": "image_url",
            "image_url": {
                "url": "data:image/png;base64,<base64-image>"
            }
        }
    ]
}`)
req, _ := http.NewRequest("POST", "https://omixa.cloud/api/v1/images/generations", bytes.NewReader(payload))
req.Header.Set("Authorization", "Bearer omx_live_xxx")
req.Header.Set("Content-Type", "application/json")
resp, err := http.DefaultClient.Do(req)

Production checklist

Operational notes

Authenticate with `Authorization: Bearer omx_live_xxx`.
Omixa handles provider keys, routing, billing, failover, and usage recording behind this endpoint.
For edits and reference workflows, send inline image data URLs. Omixa does not fetch arbitrary remote image URLs for providers that require inline media.