Imagen 3
Imagen 3 is Google’s high quality text to image model. It produces detailed, photorealistic images with improved lighting and fewer artifacts. It offers strong prompt adherence, better text rendering, and supports editing workflows through the Gemini API and Vertex AI.
API Options
Platform-level options for task execution and delivery.
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taskType
string required value: imageInference -
Identifier for the type of task being performed
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taskUUID
string required UUID v4 -
UUID v4 identifier for tracking tasks and matching async responses. Must be unique per task.
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outputType
string default: URL -
Image output type.
Allowed values 3 values
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outputFormat
string default: JPG -
Specifies the file format of the generated output. The available values depend on the task type and the specific model's capabilities.
- `JPG`: Best for photorealistic images with smaller file sizes (no transparency).
- `PNG`: Lossless compression, supports high quality and transparency (alpha channel).
- `WEBP`: Modern format providing superior compression and transparency support.
**Transparency**: If you are using features like background removal or LayerDiffuse that require transparency, you must select a format that supports an alpha channel (e.g., `PNG`, `WEBP`, `TIFF`). `JPG` does not support transparency.Allowed values 3 values
-
outputQuality
integer min: 20 max: 99 default: 95 -
Compression quality of the output. Higher values preserve quality but increase file size.
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webhookURL
string URI -
Specifies a webhook URL where JSON responses will be sent via HTTP POST when generation tasks complete. For batch requests with multiple results, each completed item triggers a separate webhook call as it becomes available.
Learn more 1 resource
- Webhooks PLATFORM
- Webhooks
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deliveryMethod
string default: sync -
Determines how the API delivers task results.
Allowed values 2 values
- Returns complete results directly in the API response.
- Returns an immediate acknowledgment with the task UUID. Poll for results using getResponse.
Learn more 1 resource
- Task Polling PLATFORM
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uploadEndpoint
string URI -
Specifies a URL where the generated content will be automatically uploaded using the HTTP PUT method. The raw binary data of the media file is sent directly as the request body. For secure uploads to cloud storage, use presigned URLs that include temporary authentication credentials.
Common use cases:
- Cloud storage: Upload directly to S3 buckets, Google Cloud Storage, or Azure Blob Storage using presigned URLs.
- CDN integration: Upload to content delivery networks for immediate distribution.
// S3 presigned URL for secure upload https://your-bucket.s3.amazonaws.com/generated/content.mp4?X-Amz-Signature=abc123&X-Amz-Expires=3600 // Google Cloud Storage presigned URL https://storage.googleapis.com/your-bucket/content.jpg?X-Goog-Signature=xyz789 // Custom storage endpoint https://storage.example.com/uploads/generated-image.jpgThe content data will be sent as the request body to the specified URL when generation is complete.
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safety
object -
Content safety checking configuration for image generation.
Properties 2 properties
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safety»checkContentcheckContent
boolean default: false -
Enable or disable content safety checking. When enabled, defaults to
fastmode.
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safety»modemode
string default: none -
Safety checking mode for image generation.
Allowed values 2 values
- Disables checking.
- Performs a single check.
-
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ttl
integer min: 60 -
Time-to-live (TTL) in seconds for generated content. Only applies when
outputTypeisURL.
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includeCost
boolean default: false -
Include task cost in the response.
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numberResults
integer min: 1 max: 20 default: 1 -
Number of results to generate. Each result uses a different seed, producing variations of the same parameters.
Generation Parameters
Core parameters for controlling the generated content.
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model
string required value: google:1@1 -
Identifier of the model to use for generation.
Learn more 3 resources
-
positivePrompt
string required min: 2 max: 3000 -
Text prompt describing elements to include in the generated output.
Learn more 2 resources
-
Width of the generated media in pixels.
Learn more 2 resources
-
Height of the generated media in pixels.
Learn more 2 resources
Submerged Ballroom Ruins
{
"taskType": "imageInference",
"taskUUID": "5265c736-d757-45f8-8d8b-bed4a97dfc0b",
"model": "google:1@1",
"positivePrompt": "An opulent 19th-century ballroom resting beneath clear tropical seawater, viewed in a wide cinematic frame. Cracked marble floors, gilded columns wrapped in soft coral growth, drifting silk curtains, a grand chandelier tilted and tangled with sea plants, schools of silver fish weaving through broken arched windows, floating sheet music and pearl-like bubbles, sunbeams piercing down from the surface and scattering across dust-like particles in the water. A lone cellist in an antique diving suit stands near the center beside a polished wooden cello, creating an eerie yet graceful focal point. Hyper-detailed photorealism, exquisite textures, realistic caustic lighting, rich color separation, atmospheric depth, sharp foreground details, elegant composition, natural reflections, minimal artifacts.",
"width": 1408,
"height": 768
}{
"taskType": "imageInference",
"taskUUID": "5265c736-d757-45f8-8d8b-bed4a97dfc0b",
"imageUUID": "0c1f635a-adee-4c2e-8ce1-0c7ea5002333",
"imageURL": "https://im.runware.ai/image/os/a23d05/ws/2/ii/0c1f635a-adee-4c2e-8ce1-0c7ea5002333.jpg",
"seed": 899817119,
"cost": 0.04
}Festival of Paper Meteors
{
"taskType": "imageInference",
"taskUUID": "cb596021-ec29-4bd2-a428-426afcea62f5",
"model": "google:1@1",
"positivePrompt": "A sweeping wide cinematic scene of an annual sky festival in an old river city, hundreds of handcrafted paper meteor kites glowing with warm ember-like lantern cores drifting above tiled rooftops and arched bridges, families and musicians gathered along the water, silk banners, floating reflections, intricate paper textures, polished brass instruments, cobblestone alleys, gentle haze, dramatic depth, realistic lighting, crisp facial expressions, highly detailed clothing from many cultures, festive yet elegant mood, photorealistic, premium camera quality, natural color grading, sharp foreground details, richly layered midground and background, no text in the image",
"width": 1408,
"height": 768
}{
"taskType": "imageInference",
"taskUUID": "cb596021-ec29-4bd2-a428-426afcea62f5",
"imageUUID": "75c0425c-a2ce-4436-9aad-51ef8f1b9631",
"imageURL": "https://im.runware.ai/image/os/a13d12/ws/2/ii/75c0425c-a2ce-4436-9aad-51ef8f1b9631.jpg",
"seed": 1069347369,
"cost": 0.04
}Wind-Carved Glacier Caravan
{
"taskType": "imageInference",
"taskUUID": "4188b959-72c3-4bf6-b229-d9ea10a5070b",
"model": "google:1@1",
"positivePrompt": "A sweeping panoramic scene of a merchant caravan crossing a vast glacier valley at sunrise, led by shaggy musk oxen pulling low wooden sleds loaded with colorful ceramic jars, rolled carpets, brass instruments, and bundled spices wrapped in patterned cloth. Tall blue ice walls rise on both sides, etched by centuries of wind, with suspended icicles and translucent arches catching warm amber light from the low sun. Travelers in layered wool, fur-lined hoods, and embroidered mittens walk beside the caravan, leaving fresh tracks in powdery snow. In the distance, a rope bridge spans a narrow crevasse, and tiny prayer flags flutter between ice pillars. Atmosphere of cold clarity and quiet endurance, photorealistic, richly textured, dramatic natural light, realistic shadows, sharp foreground details, deep atmospheric perspective, highly detailed materials, balanced composition, premium travel photography look.",
"width": 1408,
"height": 768
}{
"taskType": "imageInference",
"taskUUID": "4188b959-72c3-4bf6-b229-d9ea10a5070b",
"imageUUID": "4c907627-b825-40a8-8cd7-25f44f58ae4d",
"imageURL": "https://im.runware.ai/image/os/a24d12/ws/2/ii/4c907627-b825-40a8-8cd7-25f44f58ae4d.jpg",
"seed": 2133540005,
"cost": 0.04
}