Imagen 4 Fast

Документация разработчика

Imagen 4 Fast for prompt-based image generation through the Omixa resale gateway.

Model Reference

Image generation and editing models

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

Imagen 4 Fast

imagen-4.0-fast-generate-001

Imagen 4 Fast for prompt-based image generation through the Omixa resale gateway.

Изображение

image per unit $0.020000

minimum hold $0.010000

Integration reference

Connect Imagen 4 Fast

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

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

Provider: google
Endpoint type: google_imagen_generation

Request schema

Request fields

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

Field	Тип	Required	Accepted values	Описание
`model`	string	Yes	imagen-4.0-fast-generate-001	Use `imagen-4.0-fast-generate-001`. Omixa resolves the active provider route and failover key automatically.
`prompt`	string	Yes	Any valid value	Natural language instruction for the generated or edited image.
`n`	integer	No	1-10	Number of images to request. Omixa caps the value by provider limits.
`output_format`	string	No	png, jpeg, webp	Preferred output file format.
`aspect_ratio`	string	No	1:1, 16:9, 9:16, 4:3, 3:4	Image shape. Gemini/Nano Banana and Imagen models accept common ratios.
`size`	string	No	0.5K, 1K, 2K, 4K	Google image size/resolution bucket where supported.
`input_images`	array	No	Any valid value	Reference images for Nano Banana/Gemini image edit or merge. Keep total inline files under Omixa request limits.
`person_generation`	string	No	allow_adult, allow_all, dont_allow	Person generation safety control for Imagen-style models.
`enhance_prompt`	boolean	No	Any valid value	Lets the provider expand or rewrite the prompt when supported.
`add_watermark`	boolean	No	Any valid value	Provider watermark setting for Imagen-style outputs.
`reasoning_effort`	string	No	minimal, high	Gemini image thinking level where available.

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": "imagen-4.0-fast-generate-001",
    "prompt": "A premium black and white product dashboard, clean glass UI, high contrast.",
    "n": 1,
    "output_format": "png",
    "aspect_ratio": "1:1",
    "size": "1K",
    "input_images": [
        {
            "type": "image_url",
            "image_url": {
                "url": "data:image/png;base64,<base64-reference>"
            }
        }
    ]
}

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

curl -X POST https://www.omixa.cloud/api/v1/images/generations \
  -H "Authorization: Bearer omx_live_xxx" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "imagen-4.0-fast-generate-001",
    "prompt": "A premium black and white product dashboard, clean glass UI, high contrast.",
    "n": 1,
    "output_format": "png",
    "aspect_ratio": "1:1",
    "size": "1K",
    "input_images": [
        {
            "type": "image_url",
            "image_url": {
                "url": "data:image/png;base64,<base64-reference>"
            }
        }
    ]
}'

JavaScript fetch

const response = await fetch('https://www.omixa.cloud/api/v1/images/generations', {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer omx_live_xxx',
    'Content-Type': 'application/json'
  },
  body: "{\n    \"model\": \"imagen-4.0-fast-generate-001\",\n    \"prompt\": \"A premium black and white product dashboard, clean glass UI, high contrast.\",\n    \"n\": 1,\n    \"output_format\": \"png\",\n    \"aspect_ratio\": \"1:1\",\n    \"size\": \"1K\",\n    \"input_images\": [\n        {\n            \"type\": \"image_url\",\n            \"image_url\": {\n                \"url\": \"data:image/png;base64,<base64-reference>\"\n            }\n        }\n    ]\n}"
});
const data = await response.json();

Python requests

import requests

response = requests.post(
    'https://www.omixa.cloud/api/v1/images/generations',
    headers={'Authorization': 'Bearer omx_live_xxx', 'Content-Type': 'application/json'},
    json={
    "model": "imagen-4.0-fast-generate-001",
    "prompt": "A premium black and white product dashboard, clean glass UI, high contrast.",
    "n": 1,
    "output_format": "png",
    "aspect_ratio": "1:1",
    "size": "1K",
    "input_images": [
        {
            "type": "image_url",
            "image_url": {
                "url": "data:image/png;base64,<base64-reference>"
            }
        }
    ]
}
)
print(response.json())

PHP cURL

$ch = curl_init('https://www.omixa.cloud/api/v1/images/generations');
curl_setopt_array($ch, [
    CURLOPT_POST => true,
    CURLOPT_HTTPHEADER => ['Authorization: Bearer omx_live_xxx', 'Content-Type: application/json'],
    CURLOPT_POSTFIELDS => '{
    "model": "imagen-4.0-fast-generate-001",
    "prompt": "A premium black and white product dashboard, clean glass UI, high contrast.",
    "n": 1,
    "output_format": "png",
    "aspect_ratio": "1:1",
    "size": "1K",
    "input_images": [
        {
            "type": "image_url",
            "image_url": {
                "url": "data:image/png;base64,<base64-reference>"
            }
        }
    ]
}',
    CURLOPT_RETURNTRANSFER => true,
]);
$response = curl_exec($ch);

C# HttpClient

using var client = new HttpClient();
client.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", "omx_live_xxx");
var json = @"{
    ""model"": ""imagen-4.0-fast-generate-001"",
    ""prompt"": ""A premium black and white product dashboard, clean glass UI, high contrast."",
    ""n"": 1,
    ""output_format"": ""png"",
    ""aspect_ratio"": ""1:1"",
    ""size"": ""1K"",
    ""input_images"": [
        {
            ""type"": ""image_url"",
            ""image_url"": {
                ""url"": ""data:image/png;base64,<base64-reference>""
            }
        }
    ]
}";
var response = await client.PostAsync("https://www.omixa.cloud/api/v1/images/generations", new StringContent(json, System.Text.Encoding.UTF8, "application/json"));
var body = await response.Content.ReadAsStringAsync();

Go net/http

payload := []byte(`{
    "model": "imagen-4.0-fast-generate-001",
    "prompt": "A premium black and white product dashboard, clean glass UI, high contrast.",
    "n": 1,
    "output_format": "png",
    "aspect_ratio": "1:1",
    "size": "1K",
    "input_images": [
        {
            "type": "image_url",
            "image_url": {
                "url": "data:image/png;base64,<base64-reference>"
            }
        }
    ]
}`)
req, _ := http.NewRequest("POST", "https://www.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.
Google Vertex requests use active Vertex accounts configured by the admin; Omixa retries the next healthy account when a route fails before output starts.
For edits and reference workflows, send inline image data URLs. Omixa does not fetch arbitrary remote image URLs for providers that require inline media.