# FLUX.1 Krea [dev]

> An opinionated text-to-image model from Black Forest Labs in collaboration with Krea that excels in photorealism. Creates images that avoid the oversaturated 'AI look'.

- **Provider**: replicate
- **Model ID**: black-forest-labs/flux-krea-dev
- **Category**: image_generation
- **Credits**: 45 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` (string, optional): Input image for image to image mode. The aspect ratio of your output will match this image
- `num_outputs` (integer, optional): Number of outputs to generate
- `seed` (integer, optional): Random seed. Set for reproducible generation
- `go_fast` (boolean, optional): Run faster predictions with additional optimizations.
- `megapixels` (string, optional): Approximate number of megapixels for generated image
- `prompt_strength` (number, optional): Prompt strength when using img2img. 1.0 corresponds to full destruction of information in image
- `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)
- `disable_safety_checker` (boolean, optional): Disable safety checker for generated images.
- `output_format` (string, optional): Format of the output images
- `guidance` (number, optional): Guidance for generated image. Lower values can give more realistic images. Good values to try are 2, 2.5, 3 and 3.5
- `prompt` (string, **required**): Prompt for generated image
- `num_inference_steps` (integer, optional): Number of denoising steps. Recommended range is 28-50, and lower number of steps produce lower quality outputs, faster.

## Example Request

```json
{
  "model": "black-forest-labs/flux-krea-dev",
  "input": {
    "aspect_ratio": "1:1",
    "num_outputs": 1,
    "output_format": "webp",
    "go_fast": true,
    "guidance": 3,
    "megapixels": "1",
    "prompt_strength": 0.8,
    "prompt": "a portrait photo from 2004 with glitchy CMYK errors producing very slight multiple images in cyan, yellow and magenta, those duplicates have a burnt effect",
    "output_quality": 80,
    "num_inference_steps": 28
  }
}
```

## 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

json

## Tags

text-to-image, photorealism, flux, image-generation, black-forest-labs, krea

## Documentation

https://huggingface.co/black-forest-labs/FLUX.1-Krea-dev