black-forest-labs/flux-kontext-dev
Open-weight version of FLUX.1 Kontext
$0.01 / request
GPU: 4xH100
Pricing
black-forest-labs/
flux-kontext-dev
Pricing for Synexa AI models works differently from other providers. Instead of being billed by time, you are billed by input and output, making pricing more predictable.
Output
$0.0100 / image
or
100 images / $1
For example, generating 100 images should cost around $1.00.
Check out our docs for more information about how per-request pricing works on Synexa.
| Provider | Price ($) | Saving (%) |
|---|---|---|
| Synexa | $0.0100 | - |
| replicate | $0.0250 | 60.0% |
| fal | $0.0250 | 60.0% |
Readme
FLUX.1 Kontext Dev - Text-Based Image Editing
FLUX.1 Kontext Dev is an open-weight text-based image editing model from Black Forest Labs. It allows you to edit images using natural language text prompts with high-quality results.
What You Can Do
Kontext excels at:
- Style Transfer: Convert photos to different art styles (watercolor, oil painting, sketches)
- Object/Clothing Changes: Modify hairstyles, add accessories, change colors
- Text Editing: Replace text in signs, posters, and labels
- Background Swapping: Change environments while preserving subjects
- Character Consistency: Maintain identity across multiple edits
Prompting Best Practices
Be Specific
- Use clear, detailed language with exact colors and descriptions
- Avoid vague terms like "make it better"
- Name subjects directly: "the woman with short black hair" vs. "she"
Preserve Intentionally
- Specify what should stay the same: "while keeping the same facial features"
- Use "maintain the original composition" to preserve layout
- For background changes: "Change the background to a beach while keeping the person in the exact same position"
Text Editing Tips
- Use quotation marks: "replace 'old text' with 'new text'"
- Stick to readable fonts
- Match text length when possible to preserve layout
Style Transfer
- Be specific about artistic styles: "impressionist painting" not "artistic"
- Reference known movements: "Renaissance" or "1960s pop art"
- Describe key traits: "visible brushstrokes, thick paint texture"
Complex Edits
- Break into smaller steps for better results
- Start simple and iterate
- Use descriptive action verbs instead of "transform" for more control
Tips Summary
- Be specific with colors, styles, and descriptions
- Start simple and iterate on successful edits
- Preserve intentionally by stating what to keep unchanged
- Use quotation marks for exact text replacements
- Control composition by specifying camera angles and framing
- Choose verbs carefully - "change" vs "transform" gives different results