Multi Image Kontext Pro

# FLUX.1 Kontext Pro – Text-Guided Image Editing Model

## What is FLUX.1 Kontext Pro?
FLUX.1 Kontext Pro is an advanced AI-driven, text-guided image editing model that transforms simple prompts into professional-grade visuals with speed and precision. Engineered for seamless API integration, it automates complex, multi-step manipulations—such as object alteration, style transfer, and background replacement—while maintaining consistent image quality. Whether you’re a developer building dynamic image pipelines, a creator seeking intuitive editing commands, or a product manager streamlining marketing mockups, FLUX.1 Kontext Pro delivers reliable, high-fidelity results.

## Key Features
- Text-Guided Editing: Convert natural-language prompts into precise image transformations.  
- Multi-Image Fusion: Merge two input images (JPEG/PNG/GIF/WEBP) into a seamless composition.  
- Style Transfer & Background Replacement: Apply artistic styles or swap backgrounds without artifacts.  
- API-First Design: Easy integration via REST endpoints; ideal for automated workflows.  
- Fast Performance: Millisecond-scale inference for rapid iteration on prototypes and campaigns.  
- Parameter Control:
  - prompt (required): Describe desired edits (“Merge the images to create a new, imaginative scene”).  
  - input_image_1, input_image_2 (required): Supply high-resolution URLs for best output.  
  - aspect_ratio (optional): Choose from common ratios (1:1, 16:9, 4:3, etc.) or match_input_image.  
  - seed (advanced): Set an integer for reproducible results or omit for random variations.  
  - output_format (advanced): Select “png” for maximum fidelity or “jpg” for smaller file size.  
  - safety_tolerance (advanced): Adjust filtering strictness (0 = strict, 2 = lenient).

## Best Use Cases
- Automated Marketing Visuals: Generate on-brand banners, ads, and social posts at scale.  
- Product Mockups: Swap backgrounds and tweak product angles for e-commerce catalogs.  
- Creative Prototyping: Explore style blends, object augmentations, and surreal composites.  
- App Integrations: Embed real-time image editing in web or mobile applications.  
- Content Personalization: Dynamically tailor visuals based on user preferences or A/B tests.

## Prompt Tips and Output Quality
- Be Descriptive: Specify objects, styles, or moods (“Replace beach background with a rainy cityscape”).  
- Use High-Quality Inputs: Provide clear, high-resolution images for crisp composites.  
- Control Aspect Ratio: Match your target display (e.g., 16:9 for widescreen, 1:1 for social).  
- Lock the Seed: Reuse `seed=1234` to reproduce exact outputs for testing.  
- Balance Safety Tolerance: Start at `safety_tolerance=1` to filter unwanted content without over-strictness.  
- Preview & Iterate: Adjust prompts and advanced parameters to fine-tune color, composition, and detail.

# Guide to Using FLUX.1 Kontext Pro Effectively

FLUX.1 Kontext Pro is a powerful text-guided image editing model that automates complex visual transformations via REST API. This guide covers essential parameters, best practices, and tailored recommendations for common workflows.

## Getting Started
1. **API Call Structure**  
   • POST `/edit` with JSON body:  
     ```json
     {
       "prompt": "Merge the images to create a dreamy sunset scene",
       "input_image_1": "https://example.com/img1.png",
       "input_image_2": "https://example.com/img2.png",
       "aspect_ratio": "16:9",
       "seed": 42,
       "output_format": "png",
       "safety_tolerance": 1
     }
     ```
2. **Required Fields**  
   - `prompt` (str): Natural-language description.  
   - `input_image_1`, `input_image_2` (URLs): High-resolution JPEG, PNG, GIF, or WEBP.

## Key Parameters
- **aspect_ratio** (advanced):  
  • `match_input_image` for minimal cropping  
  • Common presets: `1:1`, `16:9`, `4:3`  
- **seed** (advanced):  
  • Fixed integer (e.g., `1234`) for reproducibility  
  • Omit for randomized variations  
- **output_format** (advanced):  
  • `png` for maximum fidelity  
  • `jpg` for smaller file size  
- **safety_tolerance** (advanced):  
  • `0` = strict filtering  
  • `1` = balanced  
  • `2` = lenient, creative freedom

## Use Case Recommendations

1. **Automated Marketing Visuals**  
   - aspect_ratio: `16:9` (banners) or `1:1` (social)  
   - output_format: `jpg` for faster load times  
   - seed: omit for diverse A/B testing  
   - safety_tolerance: `1` to block unwanted content

2. **E-Commerce Product Mockups**  
   - aspect_ratio: `4:3` or `match_input_image`  
   - output_format: `png` for transparency and crisp detail  
   - seed: fixed (e.g., `1234`) for consistent catalog styling  
   - safety_tolerance: `0` to enforce brand-safe imagery

3. **Creative Prototyping**  
   - aspect_ratio: `match_input_image` or unconventional `9:16` vertical  
   - output_format: `png`  
   - seed: random (omit) to explore variations  
   - safety_tolerance: `2` for unrestricted creativity

4. **App & Web Integration**  
   - aspect_ratio: adapt to UI slots (`1:1` for avatars, `21:9` for headers)  
   - output_format: `jpg` if bandwidth-sensitive  
   - seed: dynamic (variable per session)  
   - safety_tolerance: `1` to balance safety and flexibility

## Best Practices
- Be **descriptive** in your prompt: mention styles, colors, objects, and moods.  
- Use **high-resolution inputs** (≥1024×1024 px) to maintain crisp composites.  
- **Iterate**: preview results, tweak parameters, and refine prompts.  
- Lock the seed when you need **exact reproducibility** across runs.  
- Start with `safety_tolerance=1` and adjust based on your content guidelines.  

By following this guide, you’ll unlock FLUX.1 Kontext Pro’s full potential—delivering fast, reliable, and high-quality image edits for any application.

How do I edit images with FLUX.1 Kontext Pro?

A: Call the API with two image URLs and a prompt string. Optionally set aspect_ratio, seed, and output_format.

What file formats are supported?

A: Input: JPEG, PNG, GIF, WEBP. Output: “png” (default) or “jpg”.

Can I control the output aspect ratio?

A: Yes. Use aspect_ratio values like “1:1”, “16:9”, or “match_input_image” to fit your layout.

How do I ensure reproducible results?

A: Include a fixed integer in the seed parameter (e.g., seed=1234) for consistent outputs.

What does safety_tolerance mean?

A: It adjusts the model’s content filter: 0 = strict, 2 = more lenient. Default is 2 for creative flexibility.