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POST
/
generate
/
image
/
bfl
/
flux-1-kontext-dev
Flux Kontext
curl --request POST \
  --url https://api.krea.ai/generate/image/bfl/flux-1-kontext-dev \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "prompt": "Moss-covered forest, with ancient trees and a floor lit by fireflies."
}
'
{
  "job_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "created_at": "2023-11-07T05:31:56Z",
  "completed_at": null,
  "result": null,
  "error": {
    "code": "<string>",
    "message": "<string>"
  }
}

Pricing

Fixed API prices in USD.
Price: $0.0128 per request
These aliases are accepted for compatibility only and are not shown in the request schema.
DeprecatedUse insteadAccepted until
imageUrlimage_url2026-06-19
styleImagesstyle_images2026-06-19
guidance_scale_fluxguidance_scale2026-06-19

Authorizations

Authorization
string
header
required

Bearer authentication header of the form Bearer <token>, where <token> is your auth token.

Headers

X-Webhook-URL
string<uri>

URL to receive a POST request when the job completes. The webhook will receive the job data including results.

Body

application/json
prompt
string
required
Maximum string length: 1800
seed
number
default:461986991
steps
integer
default:25
Required range: 1 <= x <= 100
width
number
default:1024
Required range: 512 <= x <= 2368
height
number
default:1024
Required range: 512 <= x <= 2368
image_url
string<uri> | null
strength
number
default:1

Denoising strength when an input image is provided. 0 keeps the input image, 1 fully replaces it.

Required range: 0 <= x <= 1
guidance_scale
number
default:3

Classifier-free guidance scale. Higher values follow the prompt more strictly. Default 3.0.

Required range: 0 <= x <= 24
style_images
object[]

Image prompts to use for the generation

Maximum array length: 1

Response

The resulting job data. This will be returned in a pending state until the job is completed. See /jobs/{id} for retrieving the results.

job_id
string<uuid>
required
status
enum<string>
required
Available options:
backlogged,
queued,
scheduled,
processing,
sampling,
intermediate-complete,
completed,
failed,
cancelled
created_at
string<date-time>
required
completed_at
null
required
result
null
required
error
object