
Flux.1 Kontext Dev Lora
High-speed endpoint for the FLUX.1 Kontext [dev] model with full LoRA integration, enabling fast and high-quality image editing using pre-trained LoRA adapters tailored to specific styles, brand aesthetics, and product-focused outputs.
Avg Run Time: 25.000s
Model Slug: flux-kontext-dev-lora
Category: Image to Image
Input
Enter an URL or choose a file from your computer.
Click to upload or drag and drop
(Max 50MB)
Output
Example Result
Preview and download your result.

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.
Overview
The FLUX.1 Kontext [dev] model with full LoRA integration (often referred to as "flux-kontext-dev-lora") is a high-speed, high-quality image generation and editing endpoint designed for rapid, style-consistent outputs. While detailed developer attribution is not explicitly stated in the available search results, the model is part of the broader FLUX family, which is recognized in the community for its focus on efficient, high-fidelity image synthesis and editing. The model leverages pre-trained LoRA (Low-Rank Adaptation) adapters, enabling users to fine-tune outputs for specific styles, brand aesthetics, and product-focused applications without retraining the entire base model.
Key features include fast inference speeds, support for multiple image resolutions, and the ability to integrate custom LoRA adapters for targeted visual effects. The underlying technology combines a vision-language model (potentially similar to architectures like Qwen2.5-VL) with a diffusion-based image generator, using a connector module to map text and context tokens into the latent space of a diffusion transformer. This decoupled approach allows for efficient multimodal reasoning and high-quality visual generation, with the added flexibility of LoRA for rapid adaptation to new tasks or styles.
What makes this model unique is its emphasis on both speed and quality, with optimizations for real-world deployment on consumer-grade GPUs (e.g., 8–12GB VRAM), and its support for a wide range of aspect ratios and reference image conditioning. The integration of LoRA adapters is a standout feature, as it allows for lightweight, style-specific customization without the computational cost of full model fine-tuning.
Technical Specifications
- Architecture: Hybrid vision-language model (potentially Qwen2.5-VL-inspired) with diffusion transformer backbone and LoRA integration
- Parameters: Exact total not specified in available sources; diffusion head ~870M parameters, with full model likely in the multi-billion range
- Resolution: Supports training and inference at 512x512 and 1024x1024 resolutions; flexible aspect ratios (1:1, 1:2, 2:3, 3:4, 3:5, 4:5, 9:16)
- Input/Output formats: Standard image formats (PNG, JPG, etc.); accepts text prompts and reference images
- Performance metrics: Benchmarked for optimal performance on 8–12GB VRAM GPUs (e.g., RTX 3060, 4070); Block Cache optimization for memory efficiency; real-world speed and quality trade-offs documented in community benchmarks
- Training: Mixed multi-task dataset; resolution upscaling stage; hybrid parallel optimization (tensor parallelism, parameter sharding, BF16 mixed precision)
Key Considerations
- For best results, use the FP16 variant if GPU resources allow, as it offers the highest quality; FP8 is a good compromise for speed and memory, while GGUF/NF4 variants are optimized for lower-end hardware but may sacrifice some detail.
- Prompt engineering is critical: clear, specific prompts and well-chosen reference images yield more consistent and desirable outputs.
- Be mindful of the number of reference images and their aspect ratios to avoid padding and maintain batch efficiency during inference.
- Quality vs. speed is a key trade-off: "Schnell" (fast) models generate images in 4–8 steps but may lose fine details compared to the standard "Dev" models, which use ~20 steps for higher fidelity.
- LoRA rank selection affects convergence and output quality; higher ranks (e.g., 128) generally offer faster convergence with marginal gains beyond that point.
- Regularly update LoRA adapters and base model checkpoints to leverage the latest improvements and bug fixes.
Tips & Tricks
- Start with the FP16 model for maximum quality, then switch to FP8 or GGUF/NF4 if GPU memory is constrained.
- Use explicit, detailed prompts and include style keywords relevant to your LoRA adapter for more targeted results.
- For product or brand-specific outputs, pre-train or fine-tune LoRA adapters on a curated dataset of your desired aesthetic.
- Iteratively refine outputs by adjusting prompt weight, negative prompts, and the number of diffusion steps.
- Experiment with different LoRA ranks (64, 128, 256) to balance speed and quality; 128 is often a good default.
- Utilize reference images consistently in aspect ratio and content to improve batch processing efficiency.
- For rapid prototyping, use the "Schnell" variant to generate quick drafts, then switch to "Dev" for final renders.
Capabilities
- High-speed, high-quality image generation and editing, especially when paired with custom LoRA adapters.
- Supports a wide range of image resolutions and aspect ratios, making it versatile for different use cases.
- Efficient multimodal reasoning: can condition on both text and reference images for more context-aware outputs.
- Lightweight adaptation via LoRA allows for rapid customization to new styles, brands, or products without full model retraining.
- Optimized for real-world deployment on consumer GPUs, with variants (FP8, GGUF, NF4) tailored to different hardware profiles.
- Delivers consistent, style-coherent results when prompts and references are well-chosen.
- Capable of both unconditional generation and controlled editing tasks, such as inpainting, outpainting, and style transfer.
What Can I Use It For?
- Professional product visualization: generate and edit product images with consistent brand aesthetics using custom LoRA adapters.
- Creative content creation: produce illustrations, concept art, and social media visuals with specific artistic styles.
- Rapid prototyping: quickly iterate on design concepts for advertising, web, or print media.
- Style-consistent asset generation: create batches of images for games, apps, or marketing materials with unified visual language.
- Educational and research applications: experiment with multimodal conditioning, prompt engineering, and lightweight model adaptation.
- Community-driven projects: users share workflows for anime, photorealism, and abstract art generation, often highlighting the flexibility of LoRA integration.
- Technical benchmarking: compare performance, quality, and resource usage across different hardware setups and model variants.
Things to Be Aware Of
- Performance is highly dependent on GPU VRAM: higher-quality variants (FP16) require powerful hardware, while GGUF/NF4 are more accessible but may lose detail.
- Output consistency can vary with prompt specificity and the quality of reference images; ambiguous prompts may lead to unpredictable results.
- Community benchmarks highlight that the "Schnell" variants are much faster but produce less detailed images compared to the standard "Dev" models.
- Users report that Block Cache optimization significantly improves VRAM efficiency, especially on mid-range GPUs.
- Positive feedback emphasizes the model's speed, flexibility, and the value of LoRA for style adaptation.
- Some users note that achieving photorealistic or highly specific results may require careful prompt engineering and multiple iterations.
- The model is actively discussed in technical forums, with users sharing tips for optimal deployment and troubleshooting.
Limitations
- Highest-quality outputs (FP16) demand high-end GPUs, limiting accessibility for users with less powerful hardware.
- While LoRA adapters enable rapid style adaptation, they may not fully capture complex or highly nuanced aesthetics without additional fine-tuning.
- The model's performance and output quality can degrade with overly ambiguous prompts or poorly chosen reference images.
- As with many diffusion models, generating very large images (beyond 1024x1024) may require additional upscaling steps or external tools.
- The model is best suited for users comfortable with prompt engineering and iterative refinement; beginners may face a learning curve.
Pricing Detail
This model runs at a cost of $0.035 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.
Related AI Models
You can seamlessly integrate advanced AI capabilities into your applications without the hassle of managing complex infrastructure.