Introduction
FLUX.1 Schnell LoRA Image editing redraws one source image on FLUX.1 [schnell], Black Forest Labs' fast, Apache-2.0 FLUX model, with up to three of your own LoRA files loaded. A strength control sets how far the result moves from the source, an optional mask limits the change to one area, and the output keeps the source's aspect ratio.
Choose a mode by starting material
| What you have | Mode |
|---|---|
| a written description | FLUX.1 Schnell LoRA Text to image |
| a picture to restyle or inpaint | FLUX.1 Schnell LoRA Image editing |
Key features
Real inpainting with a mask
Send a black-and-white mask and only the white area is redrawn.
Whole-frame edits with a strength dial
Without a mask the whole frame is redrawn. Strength 0.8 to 0.9 kept the framing and pose while changing the outfit and the setting.
LoRAs on edits
FLUX.1 [dev] LoRAs load on the edit too, up to three at once, each with a scale from 0 to 4.
Request parameters
| Parameter | Required | Description |
|---|---|---|
image_url | Yes | The picture to start from. |
loras | No | Load your own LoRA files to lock in a style or character. Default: [] |
mask_url | No | Paint over the area that should change. |
output_format | No | File type of the result. jpeg · png · webp · Default: jpeg |
prompt | Yes | Describe the whole image you want back, not just the change. If a LoRA has a trigger word, put it first. |
resolution | No | Output size. Bigger sizes look sharper and cost more. 1k · 1.5k · Default: 1k |
seed | No | Reuse the same number to get a repeatable result. ≥ 0 · ≤ 2147483647 |
strength | No | How far the result may move away from your input. ≥ 0 · ≤ 1 · Default: 0.8 |
Pricing
Prices are in credits, the same credits you use on the website (1 credit = $0.01). The hold is taken when the task is accepted and settled to the actual charge when it finishes; failed tasks are refunded.
| Option | Credits per image | ≈ USD |
|---|---|---|
| Standard | 0.9 | $0.009 |
Each task is rounded up to whole credits, so one run at the lowest tier costs 1 credit per image ($0.01).
For an exact number before you run, send the same body to POST /jobs/quote.
Use cases
Change one garment
Mask the clothing, describe the new piece and keep the person and the room untouched.
Restyle a shoot
Run a set of photos at strength 0.8 to 0.9 with the same prompt and LoRA for consistent new outfits or settings.
Fast variations
Keep the source and prompt, change the seed, and get alternate takes in seconds.
Prompt guide & pro tips
Shape the mask to the object
A hard rectangle that cut through hair left a visible seam in our test. A mask that follows the garment blended cleanly.
Without a mask, describe the person
Above strength 0.85 faces drift. Repeating who is in the picture kept them recognisable in our tests.
Pick the strength by the job
0.5 barely changes the photo, around 0.7 details change, 0.85 to 0.9 is a new outfit in the same framing, and 1 is a new picture. With a mask, use 0.9 to 1.
API quick start
Call the FLUX.1 Schnell LoRA API in three steps
- Create an API key. Sign in to PopNow and create a key in the API console. Keys start with sk-popnow- and use the same credits as the website.
- Send the request. POST /jobs/createTask with model black-forest-labs/flux-1-schnell-lora/edit and an input object that follows the parameter table. The response returns a task ID straight away.
- Get the result. Poll GET /jobs/recordInfo with the task ID, or pass a callBackUrl and we post the result to it. Download the output links when the task succeeds.
# 1. Create the task. Keep the Idempotency-Key if you retry after a network error.
export IDEMPOTENCY_KEY="$(uuidgen)"
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: $IDEMPOTENCY_KEY" \
-d '{
"model": "black-forest-labs/flux-1-schnell-lora/edit",
"input": {
"prompt": "A ceramic teapot on a linen cloth, soft window light, muted palette",
"image_url": "https://media.popnow.ai/influencer/examples/marco.webp",
"resolution": "1k",
"output_format": "jpeg"
}
}'
# 2. Copy data.taskId from the response, then poll until state is succeeded, failed, canceled or expired.
TASK_ID="TASK_ID_FROM_RESPONSE"
curl "https://api.popnow.ai/api/v1/jobs/recordInfo?taskId=$TASK_ID" \
-H "Authorization: Bearer $POPNOW_API_KEY"Replace the prompt and any links with your own. The API tab has the response, polling and callback reference.
FLUX.1 Schnell LoRA API questions
How much does the FLUX.1 Schnell LoRA API cost?
FLUX.1 Schnell LoRA starts at 1 credit ($0.01) per image with Edit Image, its cheapest task. Credits are the same as on the website (1 credit = $0.01), new accounts get 30 free credits, and failed tasks are refunded.
What is the model name for FLUX.1 Schnell LoRA in the API?
Put black-forest-labs/flux-1-schnell-lora/text-to-image for Create Image; black-forest-labs/flux-1-schnell-lora/edit for Edit Image in the model field of POST /jobs/createTask.
How does the mask work?
On image editing, send a black-and-white image the size of the source as the mask. White areas are redrawn from your prompt, black areas are kept. Follow the object's outline; a hard rectangle across hair left a seam in our test.
What are the limits of the FLUX.1 Schnell LoRA API?
Resolutions: 1K · 1.5K; Prompt length (characters): 5,000; Largest upload: 10 MB. Requests outside these limits are rejected before anything is charged.
Can I try FLUX.1 Schnell LoRA without writing code?
Yes. The Playground runs FLUX.1 Schnell LoRA on your PopNow credits, needs no API key, and shows the matching code for every run.
All FLUX models
FLUX.1 Dev LoRA gives the full-quality Dev model for the same LoRAs.
- FLUX.2 Max APITop-tier FLUX: photoreal light and exact brand colorsFrom 11 credits per image
- FLUX 3 APIVideo with synced sound and a quick draft tierFrom 45 credits for a 5-second clip
- FLUX.2 Klein 9B LoRA APIFast FLUX.2 Klein 9B that loads up to three of your LoRAsFrom 3 credits per image
- FLUX.2 Klein Base 9B LoRA APIUndistilled Klein 9B for varied looks with your LoRAsFrom 4 credits per image
- FLUX.2 Klein 4B LoRA APISmall, quick FLUX.2 Klein 4B with your own LoRAsFrom 3 credits per image
- FLUX.2 Klein Base 4B LoRA APIUndistilled Klein 4B that loads your own LoRAsFrom 3 credits per image
- FLUX.2 Klein 9B APIFast FLUX edits that keep faces and poses intactFrom 2 credits per image
- FLUX.2 Klein 4B APIThe smallest, quickest FLUX for rapid draftsFrom 2 credits per image
- FLUX.2 Dev LoRA APIFLUX.2 Dev images and edits with your own LoRAsFrom 4 credits per image
- FLUX.2 Pro APIPhotoreal images with readable text and hex color controlFrom 5 credits per image
- FLUX.2 Flex APISpells headlines and labels exactly as writtenFrom 9 credits per image
- FLUX.2 Dev APIOpen-weights FLUX that can merge people into one sceneFrom 2 credits per image
- FLUX.1 Krea Dev LoRA APIPhotographic FLUX.1 Krea with your own LoRAsFrom 4 credits per image
- FLUX.1 Dev ControlNet LoRA APIPose, depth or edge control on FLUX.1 with your LoRAsFrom 6 credits per image
- FLUX.1 Fill Dev LoRA APIMasked inpainting on FLUX.1 Fill with your own LoRAsFrom 7 credits per image
- FLUX.1 Dev LoRA APIClassic FLUX.1 Dev with up to three of your LoRAsFrom 3 credits per image
- FLUX.1 Schnell LoRA APIFast FLUX.1 Schnell that loads your own LoRAsFrom 1 credit per image
Other image APIs
- Qwen Image 2.1 LoRA APIQwen Image 2.1 images and edits with up to three of your LoRAsFrom 5 credits per image
- MiniMax H3 Image LoRA APIH3 stills and edits with up to three of your LoRAsFrom 7 credits per image
- Anima Turbo LoRA APIAnime art with your own style or character LoRAsFrom 3 credits per image
- Krea 2 Turbo LoRA APIKrea 2 Turbo images and restyles with your own LoRAsFrom 4 credits per image
- P-Image LoRA APIFast P-Image renders and edits with one LoRA of your ownFrom 1 credit per image
- Z-Image Base LoRA APIZ-Image Base with up to three of your own LoRAsFrom 3 credits per image
