FLUX.1 Schnell LoRA API reference
Fast FLUX.1 Schnell that loads your own LoRAs
Call FLUX.1 Schnell LoRA from your own code with one PopNow API key. Below are the exact model IDs to send, every input field the model accepts, what each request costs in credits, and a request you can paste into a terminal.
At a glance
- Made by
- Black Forest Labs
- Output
- Image
- From
- 0.9 credits per image ($0.009)
- Typical time
- about 14 s
1 credit = $0.01. A task holds the highest possible charge when it is accepted and settles the real amount when it finishes, rounded up to whole credits; failed tasks are not charged. Ask POST /api/v1/jobs/quote for the exact figure before you run.
Create Image
black-forest-labs/flux-1-schnell-lora/text-to-image
Price
| Option | Credits (per image) | US dollars |
|---|---|---|
Default | 0.9 | $0.009 |
Parameters
| Field | Type | Default | Allowed | What it does |
|---|---|---|---|---|
promptRequired | string | — | up to 5,000 characters | Describe the subject, composition and lighting. If a LoRA has a trigger word, put it first. |
aspect_ratioOptional | string | 1:1 | 1:1, 16:9, 9:16, 4:3, 3:4, 3:2, 2:3, 21:9, 9:21 | Output aspect ratio. |
lorasOptional | array<object> | [] | up to 3 items | Up to three LoRA weight files, each with its own strength. |
output_formatOptional | string | jpeg | jpeg, png, webp | Container of the returned image. |
seedOptional | integer | — | 0 to 2147483647 | Random seed for controlled comparisons. |
Example request
This request runs as it is; any field you leave out uses its default. Put your key in POPNOW_API_KEY first.
curl -X POST "https://api.popnow.ai/api/v1/jobs/createTask" \
-H "Authorization: Bearer $POPNOW_API_KEY" \
-H "Content-Type: application/json" \
-H "Idempotency-Key: $(uuidgen)" \
-d '{
"model": "black-forest-labs/flux-1-schnell-lora/text-to-image",
"input": {
"prompt": "A cozy reading nook beside a rain-streaked window, warm lamp light, a sleeping orange cat on a knitted blanket, soft film grain"
}
}'The response carries a taskId straight away. Read the result with GET /api/v1/jobs/recordInfo, or add callBackUrl to be notified.
curl "https://api.popnow.ai/api/v1/jobs/recordInfo?taskId=TASK_ID_FROM_CREATE_TASK" \
-H "Authorization: Bearer $POPNOW_API_KEY"Edit Image
black-forest-labs/flux-1-schnell-lora/edit
Price
| Option | Credits (per image) | US dollars |
|---|---|---|
Default | 0.9 | $0.009 |
Parameters
| Field | Type | Default | Allowed | What it does |
|---|---|---|---|---|
promptRequired | string | — | up to 5,000 characters | Describe the whole image you want back, not just the change. If a LoRA has a trigger word, put it first. |
image_urlRequired | string (uri) | — | — | Source image. The result keeps its aspect ratio. |
mask_urlOptional | string (uri) | — | — | Optional black-and-white mask the size of the source: white areas are redrawn, black areas are kept. |
resolutionOptional | string | 1k | 1k, 1.5k | Long side of the output: 1k is about 1,000 pixels, 1.5k about 1,500. The source's aspect ratio is kept. |
strengthOptional | number | 0.8 | 0 to 1 | How far to move away from the source, from 0 to 1. |
lorasOptional | array<object> | [] | up to 3 items | Up to three LoRA weight files, each with its own strength. |
output_formatOptional | string | jpeg | jpeg, png, webp | Container of the returned image. |
seedOptional | integer | — | 0 to 2147483647 | Random seed for controlled comparisons. |
Example request
This request runs as it is; any field you leave out uses its default. Put your key in POPNOW_API_KEY first.
The example uses PopNow sample files in image_url. Replace them with your own public HTTPS links, uploads or saved assets.
curl -X POST "https://api.popnow.ai/api/v1/jobs/createTask?wait=60" \
-H "Authorization: Bearer $POPNOW_API_KEY" \
-H "Content-Type: application/json" \
-H "Idempotency-Key: $(uuidgen)" \
-d '{
"model": "black-forest-labs/flux-1-schnell-lora/edit",
"input": {
"prompt": "Change the orange jacket to deep forest green and add soft golden-hour light; keep the face, pose and background unchanged",
"image_url": "https://media.popnow.ai/influencer/examples/marco.webp"
}
}'The response carries a taskId straight away. Read the result with GET /api/v1/jobs/recordInfo, or add callBackUrl to be notified.
curl "https://api.popnow.ai/api/v1/jobs/recordInfo?taskId=TASK_ID_FROM_CREATE_TASK" \
-H "Authorization: Bearer $POPNOW_API_KEY"