# FLUX 1.1 Pro

> Faster, better FLUX Pro. Text-to-image model with excellent image quality, prompt adherence, and output diversity. Six times faster than FLUX.1 Pro with improved performance.

- **Provider**: replicate
- **Model ID**: black-forest-labs/flux-1.1-pro
- **Category**: image_generation
- **Credits**: 72 per request
- **Pricing Type**: fixed

## API Endpoint

Base URL: https://api.core.today/v1

### Create Prediction
POST /predictions

### Get Status
GET /predictions/{job_id}

### Cancel
DELETE /predictions/{job_id}

## Authentication

Header: `X-API-Key: YOUR_API_KEY`

## Input Parameters

- `aspect_ratio` (string, optional): Aspect ratio for the generated image
- `image_prompt` (string, optional): Image to use with Flux Redux. This is used together with the text prompt to guide the generation towards the composition of the image_prompt. Must be jpeg, png, gif, or webp.
- `output_format` (string, optional): Format of the output images
- `seed` (integer, optional): Random seed. Set for reproducible generation
- `safety_tolerance` (integer, optional): Safety tolerance, 1 is most strict and 6 is most permissive (Range: min: 1, max: 6)
- `prompt_upsampling` (boolean, optional): Automatically modify the prompt for more creative generation
- `width` (integer, optional): Width of the generated image in text-to-image mode. Only used when aspect_ratio=custom. Must be a multiple of 32 (if it's not, it will be rounded to nearest multiple of 32). Note: Ignored in img2img and inpainting modes.
- `prompt` (string, **required**): Text prompt for image generation
- `output_quality` (integer, optional): Quality when saving the output images, from 0 to 100. 100 is best quality, 0 is lowest quality. Not relevant for .png outputs (Range: min: 0, max: 100)
- `height` (integer, optional): Height of the generated image in text-to-image mode. Only used when aspect_ratio=custom. Must be a multiple of 32 (if it's not, it will be rounded to nearest multiple of 32). Note: Ignored in img2img and inpainting modes.

## Example Request

```json
{
  "model": "black-forest-labs/flux-1.1-pro",
  "input": {
    "aspect_ratio": "1:1",
    "output_format": "webp",
    "prompt": "a beautiful mystical landscape photo with the text \"FLUX 1.1 [Pro]\", subtle beauty, must say \"1.1\", incorporate blueberries",
    "output_quality": 80,
    "safety_tolerance": 2,
    "prompt_upsampling": true
  }
}
```

## Response Format

```json
{
  "job_id": "abc123",
  "status": "pending",
  "provider": "replicate",
  "model": "black-forest-labs/flux-schnell",
  "created_at": "2026-01-01T00:00:00Z",
  "result": null,
  "error": null
}
```

Status values: `pending`, `processing`, `completed`, `failed`, `cancelled`

## Usage Flow

1. POST /predictions with model and input → receive job_id
2. Poll GET /predictions/{job_id} until status is `completed` or `failed`
3. Result contains output URL(s) or data

## Output Type

url

## Tags

flux, text-to-image, image-generation, flux-redux, black-forest-labs, fast-generation, high-quality

## Documentation

https://blackforestlabs.ai/announcing-flux-1-1-pro-and-the-bfl-api/