FLUX-KONTEXT
A state-of-the-art text-based image editing model that delivers high-quality outputs with excellent prompt following and consistent results for transforming images through natural language
Avg Run Time: 15.000s
Model Slug: flux-kontext-pro
Playground
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Output
Example Result
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API & SDK
Create a Prediction
Send a POST request to create a new prediction. This will return a prediction ID that you'll use to check the result. The request should include your model inputs and API key.
Get Prediction Result
Poll the prediction endpoint with the prediction ID until the result is ready. The API uses long-polling, so you'll need to repeatedly check until you receive a success status.
Readme
Overview
flux-kontext-pro — Image-to-Image AI Model
flux-kontext-pro, the professional variant of Black Forest Labs' FLUX.1 Kontext family, revolutionizes image-to-image AI model editing by enabling precise modifications through natural language prompts while preserving character consistency and style across edits. Developers and creators seeking a Black Forest Labs image-to-image solution rely on flux-kontext-pro for its superior continuous image editing and precise object modification, delivering consistent, high-quality transformations without losing original composition. Available exclusively via API, this model outperforms open-source alternatives with effortless prompt adherence, making it ideal for automated image editing workflows.
Technical Specifications
What Sets flux-kontext-pro Apart
flux-kontext-pro stands out in the competitive landscape of AI image editor API tools through its specialized capabilities tailored for professional-grade edits. Unlike generic models, it excels in character consistency editing, maintaining facial features and identity markers across sequential changes, which enables seamless multi-step refinements without retraining or reference images. This precise control over composition, camera angles, and poses allows users to dictate exact scene adjustments, such as swapping backgrounds while locking subject placement, scale, and lighting—capabilities that demand complex prompting in lesser models.
- Image text editing: Directly replaces or modifies text within images via simple prompts like "Replace 'joy' with 'BFL'", producing legible results without artifacts, perfect for branding and signage updates.
- Style preservation and transfer: Retains original aesthetics during transformations or applies new styles with fidelity, supporting professional workflows like converting photos to watercolor while keeping object positions intact.
- Fast inference: Delivers efficient processing for high-resolution outputs around 1024x1024, with Pro version handling complex edits faster than Dev variants, ideal for real-time edit images with AI applications.
These features, powered by Black Forest Labs' advanced architecture, ensure flux-kontext-pro API integrations yield reliable, production-ready results.
Key Considerations
Semantic changes that contradict visual content (e.g., asking for "a car" when the input is a "person") may produce abstract or distorted outputs.
Safety tolerance should be adjusted cautiously; very low values may allow unintended artifacts, while high values may suppress creative interpretation.
Prompt content has direct influence over composition, lighting, pose, and visual tone.
Results vary depending on visual clarity, framing, and prompt descriptiveness.
Seed consistency can be used for reproducible outputs.
Tips & Tricks
How to Use flux-kontext-pro on Eachlabs
Access flux-kontext-pro seamlessly on Eachlabs via the Playground for instant testing, API for scalable integrations, or SDK for custom apps—simply provide an input image and a descriptive prompt specifying edits like object changes or background swaps. Expect high-resolution outputs in PNG or similar formats with rapid inference, supporting parameters for aspect ratios and style controls to match your flux-kontext-pro API needs.
---Capabilities
Transforms image context based on natural language instructions.
Preserves facial and structural identity when instructed.
Performs lighting changes, background substitutions, and mood shifts.
Can reinterpret clothing, style, and environment visually.
Adjusts composition without manual masking or editing.
What Can I Use It For?
Use Cases for flux-kontext-pro
For e-commerce developers building an AI photo editing for e-commerce pipeline, flux-kontext-pro transforms product shots effortlessly: upload an image of a watch on a plain background and prompt "Change the background to a luxury marble surface with soft studio lighting, keeping the watch in exact position and scale"—yielding photorealistic composites ready for catalogs without manual Photoshop work.
Marketing teams leverage its character consistency for campaign visuals, inputting a portrait and instructing "Add a sunset beach background while preserving the model's exact facial features, hair, and pose," ensuring brand ambassadors remain identical across ad variants for cohesive storytelling.
Designers handling automated image editing API tasks use text editing prowess to update graphics: provide a poster with outdated signage and say "Replace 'Summer Sale 2025' with 'Winter Clearance 2026' in bold red font, matching the original style," streamlining seasonal refreshes with zero quality loss.
Content creators benefit from style transfer in video thumbnails, feeding a base image and prompting "Transform to cyberpunk neon aesthetic while maintaining composition, camera angle, and all object positions," producing striking visuals that boost click-through rates.
Things to Be Aware Of
Use prompts like "studio portrait with soft shadows and colorful bokeh" for aesthetic upgrades.
Combine input photos of pets or people with prompts like "in a futuristic city" to explore surreal compositions.
Try setting aspect_ratio to 21:9 for wide-angle cinematic outputs.
Limitations
Cannot generate content without an input image.
May introduce noise or artifacts with very abstract or contradictory prompts.
Subject identity may be altered when the prompt implies transformation (e.g., age change, gender shift).
Not suitable for precise editing tasks like facial alignment or restoration.
Very high safety_tolerance values may overly restrict prompt interpretation.
Output Format: PNG
Pricing
Pricing Detail
This model runs at a cost of $0.040 per execution.
Pricing Type: Fixed
The cost remains the same regardless of which model you use or how long it runs. There are no variables affecting the price. It is a set, fixed amount per run, as the name suggests. This makes budgeting simple and predictable because you pay the same fee every time you execute the model.
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Generates new images by blending styles and visual elements from your prompt and multiple reference images, enabling seamless combinations such as outfits from separate fashion items or portraits merged with scenic backgrounds.
