> ## Documentation Index
> Fetch the complete documentation index at: https://docs.unifically.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Flux.2 Flex

> Flexible image generation with advanced controls. See supported inputs, parameters, pricing, response fields, and API examples.

Generate images using Flux.2 Flex with advanced controls for guidance, steps, and reproducibility.

## Model

```
black-forest-labs/flux.2-flex
```

## Parameters

| Parameter           | Type      | Required | Default  | Description                                                       |
| ------------------- | --------- | -------- | -------- | ----------------------------------------------------------------- |
| `prompt`            | string    | Yes      | -        | Text description of the image                                     |
| `aspect_ratio`      | string    | No       | `"16:9"` | `"21:9"`, `"16:9"`, `"4:3"`, `"1:1"`, `"3:4"`, `"9:16"`, `"9:21"` |
| `resolution`        | string    | No       | `"1mp"`  | `"0.6mp"`, `"1mp"`, `"2mp"`, `"4mp"`                              |
| `image_urls`        | string\[] | No       | `null`   | Reference image URLs                                              |
| `guidance`          | float     | No       | -        | Guidance scale (e.g. `1.5`)                                       |
| `steps`             | integer   | No       | -        | Number of generation steps                                        |
| `seed`              | integer   | No       | random   | Seed for reproducibility                                          |
| `prompt_upsampling` | boolean   | No       | `true`   | Auto-enhance prompt for more creative output                      |
| `nsfw_check`        | boolean   | No       | `true`   | Check uploaded media inputs for NSFW content                      |

## Example Request

```bash theme={null}
curl -X POST https://api.unifically.com/v1/tasks \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "model": "black-forest-labs/flux.2-flex",
    "input": {
      "prompt": "A cyberpunk city at night with neon reflections",
      "aspect_ratio": "21:9",
      "resolution": "2mp",
      "guidance": 1.5,
      "steps": 30,
      "seed": 124242,
      "prompt_upsampling": false
    }
  }'
```

## Response

```json theme={null}
{
  "code": 200,
  "success": true,
  "data": {
    "task_id": "abc123def456",
    "status": "processing"
  }
}
```

<Note>
  **Volume discounts** are available for almost all models. Reach out at [contact@unifically.com](mailto:contact@unifically.com) to discuss custom pricing.
</Note>