MODEL ID google:1@2

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Imagen 3 Fast

by Google July 31, 2024

Imagen 3 Fast is a streamlined text to image model that targets low latency use cases. It delivers bright images with strong contrast and improved prompt adherence. Ideal for apps that need fast image generation inside Vertex AI and Firebase with stable, predictable performance.

API Options

Platform-level options for task execution and delivery.

taskType string required value: imageInference: Identifier for the type of task being performed

taskUUID string required UUID v4: UUID v4 identifier for tracking tasks and matching async responses. Must be unique per task.

outputType string default: URL: Image output type.

Allowed values 3 values

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.

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

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

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.jpg

The content data will be sent as the request body to the specified URL when generation is complete.

safety object

Content safety checking configuration for image generation.

Properties 2 properties

safety » checkContent checkContent boolean default: false: Enable or disable content safety checking. When enabled, defaults to fast mode.

safety » mode mode string default: none

Safety checking mode for image generation.

Allowed values 2 values

: Disables checking.
: Performs a single check.

ttl integer min: 60: Time-to-live (TTL) in seconds for generated content. Only applies when outputType is URL.

includeCost boolean default: false: Include task cost in the response.

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.

model string required value: google:1@2

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 integer required paired with height

Width of the generated media in pixels.

Learn more 2 resources

height integer required paired with width

Height of the generated media in pixels.

Learn more 2 resources

taskType string required value: imageInference: Type of the task.

taskUUID string required UUID v4: UUID of the task.

imageUUID string required UUID v4: UUID of the output image.

imageURL string URI: URL of the output image.

imageBase64Data string: Base64-encoded image data.

imageDataURI string URI: Data URI of the output image.

seed integer: The seed used for generation. If none was provided, shows the randomly generated seed.

NSFWContent boolean: Flag indicating if NSFW content was detected.

cost float: Task cost in USD. Present when includeCost is set to true in the request.

Text to Image

Subterranean Tram Dining Arcade

Request

{
  "taskType": "imageInference",
  "taskUUID": "615d94fe-66f7-4089-a4e4-727b67f5b257",
  "model": "google:1@2",
  "positivePrompt": "A vast underground dining arcade built inside a repurposed tram depot, with vintage streetcars converted into tiny restaurants and bakeries, long tiled platforms covered in hanging citrus trees, polished brass signage, checkerboard stone floors, glowing paper menus, families and travelers browsing between stalls, chefs visible through tram windows, stacked pastries, copper cookware, baskets of figs and blood oranges, drifting steam from soup bowls, intricate ceiling beams and skylight shafts filtering dusty golden daylight from grates above, bright saturated colors, strong contrast, crisp architectural detail, lively yet cozy atmosphere, wide cinematic composition, highly readable scene structure, realistic textures, sharp focus",
  "width": 1408,
  "height": 768
}

Response

{
  "taskType": "imageInference",
  "taskUUID": "615d94fe-66f7-4089-a4e4-727b67f5b257",
  "imageUUID": "4f1503ed-26c7-4248-a945-1b9fe5f6ebea",
  "imageURL": "https://im.runware.ai/image/os/a22d05/ws/2/ii/4f1503ed-26c7-4248-a945-1b9fe5f6ebea.jpg",
  "seed": 897124337,
  "cost": 0.02
}

Text to Image

Lantern Regatta Under Stormclouds

Request

{
  "taskType": "imageInference",
  "taskUUID": "7afc6ac9-e91e-4281-8797-94fd0fd8b31a",
  "model": "google:1@2",
  "positivePrompt": "A wide cinematic scene of a river regatta at twilight, dozens of elaborate handmade lantern boats drifting across dark rippling water, each vessel shaped like mythical birds, koi, and pagoda-inspired sculptures, warm amber and crimson light glowing from within paper and silk panels, low stormclouds rolling overhead, distant willow-lined banks filled with bundled spectators holding parasols, gusts of wind bending reeds near the shoreline, reflections shattered across the water, bright highlights and deep shadows, vivid contrast, crisp detail, atmospheric depth, dynamic composition, richly textured materials, expressive sky, realistic lighting, no text, no watermark",
  "width": 1408,
  "height": 768
}

Response

{
  "taskType": "imageInference",
  "taskUUID": "7afc6ac9-e91e-4281-8797-94fd0fd8b31a",
  "imageUUID": "5faf69d5-9ae1-4432-bd6d-7b8de6acdcc8",
  "imageURL": "https://im.runware.ai/image/os/a13d12/ws/2/ii/5faf69d5-9ae1-4432-bd6d-7b8de6acdcc8.jpg",
  "seed": 623756672,
  "cost": 0.02
}

Text to Image

Volcanic Glasshouse Orchid Atrium

Request

{
  "taskType": "imageInference",
  "taskUUID": "10edef16-4089-48e5-9c25-a9f9053783e9",
  "model": "google:1@2",
  "positivePrompt": "A sweeping wide view inside a grand glasshouse built within an ancient volcanic cavern, terraced walkways curving around a central orchid atrium, giant translucent petals in crimson, amber, and ivory, polished black basalt floors reflecting warm sunlight pouring through a fractured crystal ceiling, delicate hanging bridges, mist drifting above fern beds, tiny brass irrigation pipes, rare tropical plants thriving against rugged lava walls, a few visitors in understated earth-toned clothing for scale, bright image, strong contrast, highly detailed, crisp focus, imaginative yet believable architecture, cinematic depth, vibrant natural colors",
  "width": 1408,
  "height": 768
}

Response

{
  "taskType": "imageInference",
  "taskUUID": "10edef16-4089-48e5-9c25-a9f9053783e9",
  "imageUUID": "728c0495-75e0-4645-a38d-321ddbb3ea7d",
  "imageURL": "https://im.runware.ai/image/os/a07d11/ws/2/ii/728c0495-75e0-4645-a38d-321ddbb3ea7d.jpg",
  "seed": 896861164,
  "cost": 0.02
}

Text to Image

Wind-Carved Ice Caravan

Request

{
  "taskType": "imageInference",
  "taskUUID": "7e10e98a-8179-4c4c-88e5-d259ed9caa6e",
  "model": "google:1@2",
  "positivePrompt": "A wide cinematic scene of a caravan crossing a frozen tidal plain at sunrise: towering shaggy pack animals draped in embroidered blankets pull sledges loaded with crystal crates and brass instruments, while bundled travelers in fur-lined coats guide them between jagged blue ice ridges. In the distance, enormous wind-carved arches of translucent ice rise from the snow, with flocks of white birds circling overhead. The sky glows in bands of apricot, pale gold, and cold turquoise, reflecting across polished ice and shallow meltwater. Crisp footprints, drifting snow, visible breath, frosted ropes, sparkling surface textures, bright highlights, deep cool shadows, vivid contrast, sharp focus, richly detailed environmental storytelling, adventurous mood, painterly realism.",
  "width": 1408,
  "height": 768
}

Response

{
  "taskType": "imageInference",
  "taskUUID": "7e10e98a-8179-4c4c-88e5-d259ed9caa6e",
  "imageUUID": "a9b274dc-c598-4afc-999b-7eb7eb473493",
  "imageURL": "https://im.runware.ai/image/os/a14d18/ws/2/ii/a9b274dc-c598-4afc-999b-7eb7eb473493.jpg",
  "seed": 942498114,
  "cost": 0.02
}

Parameter Dependencies

Dimensions

The following dimension combinations are supported:

Configuration	Dimensions
`1K (1:1)`	`1024x1024`
`1K (9:16)`	`768x1408`
`1K (16:9)`	`1408x768`
`1K (7:10)`	`896x1280`
`1K (10:7)`	`1280x896`

Pricing

1k $0.02