Create Task google/imagen-4-fast

POST https://www.kkiai.com/replicate/v1/models/google/imagen-4-fast/predictions

Official documentation: https://replicate.com/google/imagen-4-fast

Request Parameters

Authorization

Add the Authorization parameter to the Header, with the value being the Token concatenated after Bearer

Example: Authorization: Bearer ********************

Header Parameters

Parameter	Type	Required	Description	Example
Authorization	string	Optional		Bearer {{YOUR_API_KEY}}

Body Parameters (application/json)

Parameter	Type	Required	Description
input	object	Optional
└ prompt	string	Required	Text prompt for image generation.
└ aspect_ratio	string	Optional	Aspect ratio of the generated image. Default value: "1:1".
└ output_format	string	Optional	Format of the output image. Default value: "jpg".
└ safety_filter_level	string	Optional	block_low_and_above is the strictest, block_medium_and_above will block some prompts, block_only_high is the most lenient, but some prompts will still be blocked. Default value: "block_only_high"

Request Example

{
    "input": {
      "prompt": "The photo: Create a cinematic, photorealistic medium shot capturing the dynamic energy of a high-octane action film. The focus is a young woman with wind-swept dark hair streaked with pink highlights and determined features, looking directly and intently into the camera lens, she is slightly off-center. She wears a fitted pink and gold racing jacket over a black tank top with \"Imagen 4 Fast\" in motion-stylized lettering and on the next line \"on Replicate\" emblazoned across the chest and aviator sunglasses pushed up on her head. The lighting is dramatic with motion blur streaks and neon reflections from passing city lights, creating dynamic lens flares and light trails (they do not cover her face). The background shows a blurred urban nightscape with streaking car headlights and illuminated skyscrapers rushing past, rendered with heavy motion blur and shallow depth of field. High contrast lighting, vibrant neon color palette with deep blues and electric yellows, and razor-sharp focus on her intense eyes enhance the fast-paced, electrifying atmosphere. She is illuminated while the background is darker.",
      "aspect_ratio": "4:3",
      "output_format": "jpg",
      "safety_filter_level": "block_only_high"
    }
  }

cURL Example

curl --location --request POST 'https://www.kkiai.com/replicate/v1/models/google/imagen-4-fast/predictions' \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data-raw '{
    "input": {
      "prompt": "The photo: Create a cinematic, photorealistic medium shot capturing the dynamic energy of a high-octane action film. The focus is a young woman with wind-swept dark hair streaked with pink highlights and determined features, looking directly and intently into the camera lens, she is slightly off-center. She wears a fitted pink and gold racing jacket over a black tank top with \"Imagen 4 Fast\" in motion-stylized lettering and on the next line \"on Replicate\" emblazoned across the chest and aviator sunglasses pushed up on her head. The lighting is dramatic with motion blur streaks and neon reflections from passing city lights, creating dynamic lens flares and light trails (they do not cover her face). The background shows a blurred urban nightscape with streaking car headlights and illuminated skyscrapers rushing past, rendered with heavy motion blur and shallow depth of field. High contrast lighting, vibrant neon color palette with deep blues and electric yellows, and razor-sharp focus on her intense eyes enhance the fast-paced, electrifying atmosphere. She is illuminated while the background is darker.",
      "aspect_ratio": "4:3",
      "output_format": "jpg",
      "safety_filter_level": "block_only_high"
    }
  }'

Response

🟢 200 Success

Response Body

Parameter	Type	Required	Description
id	string	Required
model	string	Required
version	string	Required
input	object	Required
└ aspect_ratio	string	Required
└ input_image	string	Required
└ output_format	string	Required
└ prompt	string	Required
└ prompt_upsampling	boolean	Required
└ safety_tolerance	integer	Required
logs	string	Required
output	null	Required
data_removed	boolean	Required
error	null	Required
status	string	Required
created_at	string	Required
urls	object	Required
└ cancel	string	Required
└ get	string	Required
└ stream	string	Required
└ web	string	Required

Response Example

{
    "id": "20z778rke5rm80crb5982z0m1g",
    "model": "google/imagen-4-fast",
    "version": "hidden",
    "input": {
        "aspect_ratio": "4:3",
        "output_format": "jpg",
        "prompt": "The photo: Create a cinematic, photorealistic medium shot capturing the dynamic energy of a high-octane action film. The focus is a young woman with wind-swept dark hair streaked with pink highlights and determined features, looking directly and intently into the camera lens, she is slightly off-center. She wears a fitted pink and gold racing jacket over a black tank top with \"Imagen 4 Fast\" in motion-stylized lettering and on the next line \"on Replicate\" emblazoned across the chest and aviator sunglasses pushed up on her head. The lighting is dramatic with motion blur streaks and neon reflections from passing city lights, creating dynamic lens flares and light trails (they do not cover her face). The background shows a blurred urban nightscape with streaking car headlights and illuminated skyscrapers rushing past, rendered with heavy motion blur and shallow depth of field. High contrast lighting, vibrant neon color palette with deep blues and electric yellows, and razor-sharp focus on her intense eyes enhance the fast-paced, electrifying atmosphere. She is illuminated while the background is darker.",
        "safety_filter_level": "block_only_high"
    },
    "logs": "",
    "output": null,
    "data_removed": false,
    "error": null,
    "status": "starting",
    "created_at": "2025-07-30T03:13:27.921Z",
    "urls": {
        "cancel": "https://api.replicate.com/v1/predictions/20z778rke5rm80crb5982z0m1g/cancel",
        "get": "https://api.replicate.com/v1/predictions/20z778rke5rm80crb5982z0m1g",
        "stream": "https://stream.replicate.com/v1/files/bcwr-blsi6mnoqvfndurpci2t2i77xl2s3k3xb5r5hru3xwyrev6v7uca",
        "web": "https://replicate.com/p/20z778rke5rm80crb5982z0m1g"
    }
}