/fal-ai/flux-1/dev

POST https://www.kkiai.com/fal-ai/flux-1/dev

Official documentation: https://fal.ai/models/fal-ai/flux-1/dev

Request Parameters

Authorization

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

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

Body Parameters (application/json)

Parameter	Type	Required	Description
prompt	string	Required
image_size	string	Optional	Size of the generated image. Default value: landscape_4_3 Range (3:4, 4:3, 16:9, 9:16)
num_inference_steps	integer	Optional	Number of inference steps to perform. Default value: 28 Range: 0-50
guidance_scale	number	Optional	CFG (Classifier-Free Guidance) scale measures how closely you want the model to follow the prompt when searching for relevant images. Default value: 3.5 Range: 1-20
num_images	integer	Optional	Number of images to generate. Default value: 1 Range: 1-4
enable_safety_checker	boolean	Optional	If set to true, enables the safety checker. Default value: true
output_format	string	Optional	Format of the generated image. Default value: "jpeg" Supported formats: default, JPEG, png
acceleration	string	Optional	Generation speed. Higher speed results in faster generation. Default value: "regular" Supported: default, none, regular, high

Request Example

{
  "prompt": "Extreme close-up of a single tiger eye, direct frontal view. Detailed iris and pupil. Sharp focus on eye texture and color. Natural lighting to capture authentic eye shine and depth. The word \"FLUX\" is painted over it in big, white brush strokes with visible texture.",
  "image_size": "landscape_4_3",
  "num_inference_steps": 28,
  "guidance_scale": 3.5,
  "num_images": 1,
  "enable_safety_checker": true,
  "output_format": "jpeg",
  "acceleration": "regular"
}

cURL Example

curl --location --request POST 'https://www.kkiai.com/fal-ai/flux-1/dev' \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data-raw '{
  "prompt": "Extreme close-up of a single tiger eye, direct frontal view. Detailed iris and pupil. Sharp focus on eye texture and color. Natural lighting to capture authentic eye shine and depth. The word \"FLUX\" is painted over it in big, white brush strokes with visible texture.",
  "image_size": "landscape_4_3",
  "num_inference_steps": 28,
  "guidance_scale": 3.5,
  "num_images": 1,
  "enable_safety_checker": true,
  "output_format": "jpeg",
  "acceleration": "regular"
}'

Response

🟢 200 Success

Response Body

Parameter	Type	Required	Description
status	string	Required
request_id	string	Required
response_url	string	Required
status_url	string	Required
cancel_url	string	Required
logs	null	Required
metrics	object	Required
queue_position	integer	Required

Response Example

{
    "status": "IN_QUEUE",
    "request_id": "3892f1e8-5fb1-469f-87b0-696d6054c9f2",
    "response_url": "https://queue.fal.run/fal-ai/flux-1/requests/3892f1e8-5fb1-469f-87b0-696d6054c9f2",
    "status_url": "https://queue.fal.run/fal-ai/flux-1/requests/3892f1e8-5fb1-469f-87b0-696d6054c9f2/status",
    "cancel_url": "https://queue.fal.run/fal-ai/flux-1/requests/3892f1e8-5fb1-469f-87b0-696d6054c9f2/cancel",
    "logs": null,
    "metrics": {},
    "queue_position": 0
}