Flux Dev

Create high-quality, detailed images using the Flux Dev model

POST https://api.runpod.ai/v2/black-forest-labs-flux-1-dev/run

Flux Dev

cURL

curl --request POST \
  --url https://api.runpod.ai/v2/black-forest-labs-flux-1-dev/run \
  --header 'Content-Type: application/json' \
  --data '
{
  "input": {
    "prompt": "<string>",
    "negative_prompt": "<string>",
    "width": 123,
    "height": 123,
    "num_inference_steps": 123,
    "guidance": 123,
    "seed": 123,
    "image_format": "<string>"
  }
}
'

Response

{
  "delayTime": 17,
  "executionTime": 3986,
  "id": "sync-0965434e-ff63-4a1c-a9f9-5b705f66e176-u2",
  "output": {
    "cost": 0.02097152,
    "image_url": "https://image.runpod.ai/6/6/mCwUZlep6S/453ad7b7-67c6-43a1-8348-3ad3428ef97a.png"
  },
  "status": "COMPLETED",
  "workerId": "oqk7ao1uomckye"
}

Flux Dev is optimized for high-quality, detailed image generation. The model accepts several parameters to control the generation process, including prompt guidance, image dimensions, and sampling steps.

Each image generated costs $0.02 per megapixel.

Body

input · object · required

The input configuration object containing all generation parameters.

Show input properties

prompt · string · required

Text description of the desired image.

negative_prompt · string

Elements to exclude from the image.

width · integer · default: "1024"

Image width in pixels. Must be divisible by 64. Valid range: 256-1536.

height · integer · default: "1024"

Image height in pixels. Must be divisible by 64. Valid range: 256-1536.

num_inference_steps · integer · default: "28"

Number of denoising steps. Valid range: 1-50.

guidance · float · default: "7"

How closely to follow the prompt. Valid range: 0.0-10.0.

seed · integer · default: "-1"

Provide a seed for reproducible results. The default value (-1) will generate a random seed.

image_format · string · default: "jpeg"

Output image format. Options: "png" or "jpeg".

Response

{
  "delayTime": 17,
  "executionTime": 3986,
  "id": "sync-0965434e-ff63-4a1c-a9f9-5b705f66e176-u2",
  "output": {
    "cost": 0.02097152,
    "image_url": "https://image.runpod.ai/6/6/mCwUZlep6S/453ad7b7-67c6-43a1-8348-3ad3428ef97a.png"
  },
  "status": "COMPLETED",
  "workerId": "oqk7ao1uomckye"
}

Response

id · string

Unique identifier for the job.

status · string

Current status of the job. Value will be “COMPLETED” for successful synchronous requests.

delayTime · integer

Time in milliseconds the job spent in queue before processing started.

executionTime · integer

Time in milliseconds taken to process the request.

workerId · string

Identifier of the worker that processed the request.

output · object

Contains the generation results.

Show output properties

image_url · string

URL of the generated image. The URL is valid for 7 days.

cost · float

Cost in credits for this generation.