FLUX Image Generation

State-of-the-art AI image generation using Black Forest Labs' FLUX models.

Overview

This skill provides access to FLUX, one of the most advanced AI image generation models available. FLUX excels at photorealistic imagery, complex compositions, and accurate text rendering in images.

Available Tools

Text-to-Image

•{{flux_pro}}: High-quality image generation with FLUX Pro 1.1
•{{flux_flex}}: Flexible generation with adjustable guidance scale

Image Editing

•{{flux_kontext}}: Context-aware image editing and transformation
•{{flux_fill}}: Inpaint/fill masked regions of images
•{{flux_expand}}: Outpaint/extend images beyond boundaries

Key Features

Superior Quality

FLUX Pro 1.1 represents the cutting edge of image generation, with:

•Exceptional photorealism
•Accurate text rendering in images
•Complex multi-subject compositions
•Consistent style and coherence

Context Understanding

FLUX Kontext understands image context to make intelligent edits:

•Object modification while preserving surroundings
•Style transformation with content preservation
•Seamless blending of edited regions

Usage Examples

Example 1: Generate High-Quality Image

Use {{flux_pro}} for photorealistic generation:

json

{
  "prompt": "Professional product photo of a smartwatch on marble surface, studio lighting",
  "width": 1024,
  "height": 1024,
  "prompt_upsampling": true,
  "output_format": "png"
}

Example 2: Edit with Context

Use {{flux_kontext}} for context-aware transformations:

json

{
  "prompt": "Change the season from summer to winter, add snow to the ground and trees",
  "guidance": 3.5
}

Blob inputs: image (summer photo to edit)

Example 3: Expand Canvas

Use {{flux_expand}} to outpaint image boundaries:

json

{
  "prompt": "Continue the background scenery naturally",
  "top": 256,
  "bottom": 0,
  "left": 128,
  "right": 128
}

Blob inputs: image (portrait to expand)

Example 4: Fill Region

Use {{flux_fill}} with a mask to fill specific areas:

json

{
  "prompt": "Beautiful sunset sky with orange and purple clouds",
  "guidance": 3.5,
  "prompt_upsampling": true
}

Blob inputs: image (source photo), mask (sky region marked white)

Parameters

Common Parameters

Parameter	Description	Default
prompt	Text description of desired output	Required
width/height	Output dimensions (256-1440)	1024
seed	Random seed for reproducibility	Random
output_format	png or jpeg	png

Generation Parameters ({{flux_pro}}, {{flux_flex}})

Parameter	Description	Default
guidance	Guidance scale (1.5-5)	3.5
prompt_upsampling	Auto-enhance prompts with details	false
safety_tolerance	Content filter level (0-6)	2

Expand Parameters ({{flux_expand}})

Parameter	Description	Default
top	Pixels to expand at top	0
bottom	Pixels to expand at bottom	0
left	Pixels to expand at left	0
right	Pixels to expand at right	0

Best Practices

•Prompt Upsampling: Enable for more detailed results with {{flux_pro}}
•Guidance Scale: Lower (2-3) for creative freedom, higher (4-5) for prompt adherence
•Safety Tolerance: Adjust based on content needs (0=strict, 6=permissive)
•Seed Usage: Save seeds to reproduce or iterate on good results

Important: Language Requirements

⚠️ All prompts MUST be in English!

FLUX APIs only support English prompts. If the user provides a prompt in another language (e.g., Chinese, Japanese, Spanish), you MUST:

•Translate the prompt to English
•Enhance with descriptive keywords while preserving the original intent

Example: "可爱的男孩遛狗" → "A cute young boy walking a friendly dog in a sunny park, warm atmosphere, heartwarming scene, high quality"

Limitations

•Async processing with polling (may take 10-60 seconds)
•Maximum dimensions: 1440x1440 pixels
•Some content filtered by safety systems
•API rate limits apply
•Prompts must be in English only