bfl/flux-1/schnell/redux
Flux 1 Schnell Redux 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
Example output — click Run to generate your own
Send your first request
OpenAI-compatible endpoint with unified authentication and usage tracking.
https://api.sandbase.ai/v1/runbfl/flux-1/schnell/reduxInput Schema
5 parameters · 1 required · 4 optional
| Parameter | Type | Required | Description |
|---|---|---|---|
image | string | Required | The URL of the image to generate an image from. |
seed | integer | Optional | The same seed and the same prompt given to the same version of the model will output the same image every time. |
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 generated image. · Options: jpeg, png · Default: "jpeg" jpegpng |
num_inference_steps | integer | Optional | Min: 1 · Max: 12 · Default: 4 |
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-1/schnell/redux",
"image": "https://static.sandbase.ai/examples/bfl/flux-1/schnell/redux/input_image_0.png",
"output_format": "jpeg",
"num_inference_steps": 4,
"prompt": "a beautiful sunset over mountains"
}'
# Step 2: Poll result (replace <id>)
curl https://api.sandbase.ai/v1/run/<id> \
-H "Authorization: Bearer YOUR_API_KEY"API README
FLUX.1 [schnell] Redux
FLUX.1 [schnell] Redux combines the low-step, speed-oriented FLUX.1 Schnell model with Redux image-reference guidance. It is intended for rapid visual iteration, allowing creators to test compositions and art direction quickly while retaining the FLUX family’s ability to construct coherent subjects, lighting, materials, and stylistic treatment.
Supply a reference whose composition, palette, or aesthetic should guide the variation, then use the fast result for alternate treatments and concept branching. This route is most valuable during exploration and high-volume generation, before a slower model is chosen for demanding final-detail work.
Highlights
- Fast reference variation. Combines Schnell’s rapid generation path with visual direction extracted from a source image.
- Composition and palette transfer. Carries high-level structure, color relationships, and aesthetic cues into a new result.
- Low-step creative branching. Produces multiple related directions efficiently for mood boards and campaign exploration.
- Fresh reinterpretation. Changes content and rendering while keeping the new image visibly connected to its reference.
Pricing
| Configuration | Billing unit | Price |
|---|---|---|
| Base generation | Per request | $0.025 |
When to Use
| ✅ Good fit | ❌ Consider alternatives |
|---|---|
| The project needs this exact generation or editing route | The intended task belongs to video, audio, or 3D media |
| Available references match every required local field | Required source assets or rights are unavailable |
| The brief can specify composition, color, and finish | Output must be deterministic at pixel level |
| Supported dimensions and formats fit final placement | Delivery requires unsupported canvas specifications |
| An asynchronous generated image fits production | A live frame-synchronous response is mandatory |
Prompt Guide
Write a complete visual brief: identify the subject and references, define composition and viewpoint, describe lighting, palette, materials, typography, and finish, then list exact preservation constraints. FLUX.2 Klein does not rely on prompt upsampling, so use clear descriptive sentences rather than sparse keywords.
{
"image": "https://example.com/reference.jpg",
"seed": 1,
"aspect_ratio": "21:9",
"output_format": "jpeg"
}
Technical Specs
| Spec | Value |
|---|---|
| Model ID | bfl/flux-1/schnell/redux |
| Input fields | seed (integer)<br>image (string)<br>aspect_ratio (string; 21:9, 16:9, 3:2, 4:3, 5:4, 1:1, 4:5, 3:4, 2:3, 9:16)<br>output_format (string; jpeg, png)<br>num_inference_steps (integer; 1–12) |
| Required input | image |
| Output fields | url, content_type |
| Execution | Asynchronous job |
Related Models
bfl/flux-1/krea/reduxbfl/flux-1/lorabfl/flux-1/pulid