bfl/flux-1.1/ultra/redux
Flux 1.1 Ultra 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-1.1/ultra/reduxInput Schema
7 parameters · 2 required · 5 optional
| Parameter | Type | Required | Description |
|---|---|---|---|
image | string | Required | The image URL to generate an image from. Needs to match the dimensions of the mask. |
prompt | string | Required | The prompt to generate an image from. · Default: "" |
raw | boolean | Optional | Generate less processed, more natural-looking images. · Default: false |
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 |
image_prompt_strength | number | Optional | The strength of the image prompt, between 0 and 1. · Min: 0 · Max: 1 · Default: 0.1 |
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-1.1/ultra/redux",
"raw": false,
"image": "https://static.sandbase.ai/examples/bfl/flux-1.1/ultra/redux/input_image_0.png",
"prompt": "a beautiful sunset over mountains",
"output_format": "jpeg",
"image_prompt_strength": 0.1
}'
# Step 2: Poll result (replace <id>)
curl https://api.sandbase.ai/v1/run/<id> \
-H "Authorization: Bearer YOUR_API_KEY"API README
FLUX1.1 [pro] ultra Redux
FLUX1.1 [pro] ultra Redux combines Ultra-resolution rendering with Redux image-reference conditioning. A source image supplies composition, palette, texture, or aesthetic direction, and the model creates a new high-resolution interpretation that remains visibly related without being a literal enlargement or copy.
Use it to expand an approved art direction into alternate hero imagery, campaign families, high-resolution mood studies, and new subjects that inherit a reference aesthetic. Select references for the qualities worth transferring, then evaluate composition and stylistic continuity before relying on fine surface detail.
Highlights
- High-resolution reference variation. Creates large new imagery guided by an existing visual.
- Aesthetic cue transfer. Carries palette, texture, composition, and mood from the reference.
- Creative reinterpretation. Produces a fresh scene rather than simply upscaling or duplicating the source.
- Detail-rich derivative assets. Combines visual relation to the reference with Ultra-level spatial detail.
Pricing
| Billing unit | Price |
|---|---|
| Per request | $0.05 |
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 image-conditioned 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",
"image": "https://example.com/start-frame.png",
"output_format": "jpeg",
"prompt": ""
}
Technical Specs
| Spec | Value |
|---|---|
| Model ID | bfl/flux-1.1/ultra/redux |
| Inputs | aspect_ratio, image, image_prompt_strength, output_format, prompt, raw, seed |
| Required inputs | prompt, image |
| 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 | jpeg / png |
Related Models
bfl/flux-1.1/pro— Compare this concrete local family route.bfl/flux-1.1/pro-ultra— Compare this concrete local family route.bfl/flux-1/dev— Compare this concrete local family route.