bfl/flux-2/lora-gallery/add-background
Flux 2 Lora Gallery Add Background by BFL - AI-powered image editing, style transfer, and transformation. Edit photos with natural language instructions, remove backgrounds, change styles, and enhance images effortlessly...
PNG, JPEG, WebP, or GIF · 20 MiB maximum each
Example output — click Run to generate your own
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OpenAI-compatible endpoint with unified authentication and usage tracking.
https://api.sandbase.ai/v1/runbfl/flux-2/lora-gallery/add-backgroundInput Schema
8 parameters · 1 required · 7 optional
| Parameter | Type | Required | Description |
|---|---|---|---|
prompt | string | Required | The prompt describing the background to add. Must start with 'Add Background' followed by your description. · Default: "Add Background forest" |
seed | integer | Optional | Random seed for reproducibility. Same seed with same prompt will produce same result. |
images | string[] | Optional | The URLs of the images. Provide an image with a white or clean background. |
lora_scale | number | Optional | The strength of the add background effect. · Min: 0 · Max: 2 · Default: 1 |
aspect_ratio | string | Optional | The aspect ratio of the generated image. · Options: 21:9, 16:9, 3:2, 4:3, 5:4, 1:1, 4:5, 3:4, 2:3, 9:16 21:916:93:24:35:41:14:53:42:39:16 |
output_format | string | Optional | The format of the output image · Options: png, jpeg · Default: "png" pngjpeg |
guidance_scale | number | Optional | Min: 0 · Max: 20 · Default: 2.5 |
num_inference_steps | integer | Optional | Min: 4 · Max: 50 · Default: 40 |
Output Schema
| Field | Type | Description |
|---|---|---|
id | string | Unique identifier for the generation task |
status | string | Task status: pending, running, completed, failed, timeout |
model | string | Model used for the generation |
outputs | array | Array of output items |
outputs[].url | string | URL of the generated artifact |
outputs[].content_type | string | MIME type (e.g. image/png, video/mp4) |
error | object | null | Error details if failed, null on success |
error.type | string | Machine-readable error type code |
error.message | string | Human-readable error description |
Async Workflow
This model uses asynchronous execution. Submit a request and poll for the result.
- Submit — POST to /v1/run, receive an
id - Poll — GET /v1/run/{id} until status is
completed,failed, ortimeout - Retrieve — Read
outputsfrom the completed response
Code Examples
Ready-to-run snippets
# Step 1: Submit
curl -X POST https://api.sandbase.ai/v1/run \
-H "Content-Type: application/json" \
-H "Authorization: Bearer YOUR_API_KEY" \
-d '{
"model": "bfl/flux-2/lora-gallery/add-background",
"images": [
"https://static.sandbase.ai/examples/bfl/flux-2-lora-gallery/add-background/input_images_0.jpg"
],
"prompt": "Add Background forest",
"lora_scale": 1,
"output_format": "png",
"guidance_scale": 2.5,
"num_inference_steps": 40
}'
# Step 2: Poll result (replace <id>)
curl https://api.sandbase.ai/v1/run/<id> \
-H "Authorization: Bearer YOUR_API_KEY"API README
Flux 2 LoRA Gallery Add Background
Flux 2 LoRA Gallery Add Background places a described background behind an existing image. The input guidance calls for an image with a white or clean background, while the prompt must begin with Add Background and continue with the setting to create.
The effect strength is adjustable through LoRA scale from 0 to 2. Guidance ranges from 0 to 20 and inference steps from 4 to 50, with ten aspect ratios, PNG or JPEG output, and seed control for repeatable results.
Highlights
Clean-background starting point. Supply an image with a white or clean background so the requested environment can be added around its existing content.
Structured background prompt. Begin the prompt with Add Background, then name the setting; supported examples include a forest, modern office, beach sunset, or city skyline at night.
Adjustable effect strength. Use LoRA scale from 0–2 to control the strength of the added-background effect.
Tunable delivery. Set guidance from 0–20 and inference steps from 4–50, then choose among ten aspect ratios, PNG or JPEG, and a seed.
Pricing
| Billing unit | Price |
|---|---|
| Per request | $0.021 |
When to Use
| ✅ Good fit | ❌ Consider alternatives |
|---|---|
| The model's named workflow matches the source material and intended output | A different input modality or model route is required |
| A managed asynchronous result is suitable for the production pipeline | A synchronous, interactive editor is essential |
| The documented controls cover the required duration, framing, or format | The project needs controls outside this endpoint's schema |
| Creative iteration benefits from a repeatable request structure | Exact deterministic pixels, frames, geometry, or samples are mandatory |
| A finished downloadable media asset is the desired deliverable | Editable source layers or a native project file are required |
Prompt Guide
For generation, state the intended result first, then add the subject or source treatment, progression, style, and delivery constraints. Keep one creative variable per phrase, use the documented field names for controls, and change one setting at a time when comparing results.
{
"aspect_ratio": "21:9",
"images": [
"https://example.com/reference-1.png",
"https://example.com/reference-2.png"
],
"output_format": "png",
"prompt": "Add Background forest"
}
Technical Specs
| Spec | Value |
|---|---|
| Model ID | bfl/flux-2/lora-gallery/add-background |
| Inputs | aspect_ratio, guidance_scale, images, lora_scale, num_inference_steps, output_format, prompt, seed |
| Required inputs | prompt |
| Output fields | content_type, url |
| Execution | Async (submit, then poll for result) |
| Aspect Ratio | 21:9 / 16:9 / 3:2 / 4:3 / 5:4 / 1:1 / 4:5 / 3:4 / 2:3 / 9:16 |
| Output Format | png / jpeg |
Related Models
bfl/flux-2/lora-gallery/hdr-style— Compare this concrete local family route.bfl/flux-2/lora-gallery/satellite-view-style— Compare this concrete local family route.bfl/flux-2/lora-gallery/sepia-vintage— Compare this concrete local family route.