# FLUX 1.1 Pro Ultra

> FLUX1.1 [pro] in ultra and raw modes. Images are up to 4 megapixels. Use raw mode for realism.

- **Provider**: replicate
- **Model ID**: black-forest-labs/flux-1.1-pro-ultra
- **Category**: image_generation
- **Credits**: 140 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

- `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.
- `aspect_ratio` (string, optional): Aspect ratio for the generated image (Default: `1:1`; Options: `21:9`, `16:9`, `3:2`, `4:3`, `5:4`, `1:1`, `4:5`, `3:4`, `2:3`, `9:16`, `9:21`)
- `seed` (integer, optional): Random seed. Set for reproducible generation
- `output_format` (string, optional): Format of the output images. (Default: `jpg`; Options: `jpg`, `png`)
- `safety_tolerance` (integer, optional): Safety tolerance, 1 is most strict and 6 is most permissive (Default: `2`; Range: min: 1, max: 6)
- `image_prompt_strength` (number, optional): Blend between the prompt and the image prompt. (Default: `0.1`; Range: min: 0, max: 1)
- `raw` (boolean, optional): Generate less processed, more natural-looking images (Default: `False`)
- `prompt` (string, **required**): Text prompt for image generation

## Example Request

```json
{
  "model": "black-forest-labs/flux-1.1-pro-ultra",
  "input": {
    "raw": false,
    "aspect_ratio": "3:2",
    "image_prompt_strength": 0.1,
    "output_format": "jpg",
    "prompt": "a majestic snow-capped mountain peak bathed in a warm glow of the setting sun",
    "safety_tolerance": 2
  }
}
```

## 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, ultra, raw-mode, black-forest-labs, high-resolution

## Documentation

https://replicate.com/black-forest-labs/flux-1.1-pro-ultra