Flux Kontext Max
FLUX.1 Kontext [max] is Black Forest Labs' hosted image-generation and editing variant, positioned for prompt adherence and typography. This record covers black-forest-labs/flux-kontext-max on Replicate; its reference-image, aspect-ratio, seed and format fields belong to that provider's interface.
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🚀Function Overview
Kontext Max accepts text instructions and a reference image for tasks such as changing a poster's wording or replacing a background. BFL's positioning is a vendor claim, not a GetLLMs quality ranking. Kontext is now a previous-generation family, with FLUX.2 recommended by BFL for new projects. Max is separate from Pro and the downloadable Dev checkpoint. The Sources section identifies BFL guidance and Replicate's hosted contract, checked October 28, 2026; listed run totals are historical snapshots.
Key Features
- Transforms images using text prompts
- BFL positions Max for typography and prompt adherence; check every letter rather than assuming correct text
- Style transfer for art styles like watercolor or oil painting
- Object/clothing modification (e.g., hairstyles, colors)
- Background swapping while preserving subjects
- Designed for character consistency across edits; verify identity and untouched details in each output
- For a background edit, try: Put the mug on a wooden table, keeping its shape, logo and viewing angle unchanged. This instruction example has not been executed by GetLLMs
- BFL documents missed instructions and visual degradation during repeated edits; save the original and compare each result before using it
- Replicate's safety_tolerance range is 0 to 6, but its documented maximum is 2 when an input image is used; do not transfer another provider's settings into this request
Use Cases
- •Editing text in images (signs, posters, labels)
- •Changing art styles via style transfer
- •Modifying objects or clothing in photos
- •Swapping backgrounds while keeping subjects intact
- •Creating consistent character portraits
- •Professional headshot generation
⚙️Input Parameters
prompt
stringText description of what you want to generate, or the instruction on how to edit the given image.
input_image
stringImage to use as reference. Must be jpeg, png, gif, or webp.
aspect_ratio
stringAspect ratio of the generated image. Use 'match_input_image' to match the aspect ratio of the input image.
seed
integerRandom seed. Set for reproducible generation
output_format
stringOutput format for the generated image
safety_tolerance
integerSafety tolerance, 0 is most strict and 6 is most permissive. 2 is currently the maximum allowed when input images are used.
💡Usage Examples
Example 1
Input Parameters
{
"prompt": "Make the letters 3D, floating in space on a city street",
"input_image": "https://replicate.delivery/xezq/XfwWjHJ7HfrmXE6ukuLVEpXWfeQ3PQeRI5mApuLXRxST7XMmC/tmpc91tlq20.png",
"aspect_ratio": "match_input_image",
"output_format": "jpg",
"safety_tolerance": 2
}Quick Actions
Technical Specifications
- Hardware Type
- Not specified
- Run Count
- 1.3M
- Commercial Use
- Supported
- Pricing
- $0.08 per output image
- Platform
- Replicate
Sources
- Black Forest Labs: Kontext variants, current positioning and Dev license
- Black Forest Labs: reference-image and text-editing instructions
- Black Forest Labs: May 29, 2025 launch and documented failure cases
- Replicate: Kontext Max hosted input and output schema
- Replicate: Kontext Max offer and commercial-output terms