Sub-Second Inference

FLUX.2 Klein: Sub-Second Visual Intelligence

Real-Time AI Image Generation

Generate and edit stunning images in under a second. FLUX.2 Klein packs professional-grade quality into a compact architecture optimized for lightning-fast performance.

What is FLUX.2 Klein?

FLUX.2 Klein is a family of lightweight, open-source image generation and editing models developed by Black Forest Labs. Engineered for 'compact architecture + high-speed performance,' it enables high-quality real-time visual generation on consumer-grade hardware. The name 'Klein' (German for 'small') reflects its design philosophy: delivering top-tier AI artistry with unprecedented efficiency and low latency.

Available in both 4B and 9B parameter variants, FLUX.2 Klein offers a unified approach to image creation. Unlike traditional models that separate generation and editing, Klein integrates both into a single, cohesive workflow. This allows for seamless transitions between creating new images from scratch and making precise modifications to existing ones, all while maintaining photorealistic quality and sharp detail.

With sub-second inference speeds, FLUX.2 Klein is ideal for interactive creative processes, UI/UX prototyping, and rapid content iteration. It features enhanced text rendering capabilities and superior handling of complex human anatomy, ensuring your designs are both visually stunning and technically accurate. Licensed under Apache 2.0, it is a versatile tool for both individual creators and enterprise-level production.

Ultra-Fast Features for Creators

FLUX.2 Klein redefines the speed of creativity with its groundbreaking compact architecture.

Speed

Sub-Second Inference

Generate photorealistic images and complex edits in under a second, perfect for real-time creative workflows.

Compact

Unified Architecture

A single compact model for both image generation and editing, offering a streamlined path from concept to final art.

Quality

High-Fidelity Detail

Despite its compact size, FLUX.2 Klein delivers stunning lighting, textures, and anatomical accuracy.

Typography

Superior Text Rendering

Generate clean, legible text and complex typography within your images with precision and clarity.

Versatile

Low Latency Performance

Optimized for low-latency production deployment and responsive interaction on consumer GPUs.

Open Source

Apache 2.0 Licensed

Fully open-source and flexible for commercial integration, custom training, and private deployment.

How FLUX.2 Klein Works

Near real-time AI creation in four easy steps

Enter Your Vision

Type a detailed prompt describing the image you want to create or the changes you wish to make.

Select Model Variant

Choose between the ultra-fast 4B model for speed or the 9B model for maximum detail and quality.

Refine with Editing

Use the unified architecture to modify existing images or combine multiple visual elements instantly.

Instant Results

Experience sub-second generation. Download your high-resolution AI art or continue iterating in real-time.

Frequently Asked Questions

Everything you need to know about FLUX.2 Klein

What is FLUX.2 Klein?

FLUX.2 Klein is a lightweight AI model from Black Forest Labs designed for fast, unified image generation and editing with sub-second inference speeds.

What are the 4B and 9B models?

FLUX.2 Klein comes in two sizes: the 4B model is optimized for maximum speed and real-time use, while the 9B model offers a balance of higher quality and efficiency.

How fast is FLUX.2 Klein?

Inference is typically completed in under a second on modern consumer hardware, making it one of the fastest high-quality AI models available.

Does it support image editing?

Yes, FLUX.2 Klein uses a unified architecture that allows you to generate new images and edit existing ones within the same framework.

Is FLUX.2 Klein open source?

Yes, the model is released under the Apache 2.0 license, allowing for both personal and commercial use and integration.

How is text rendering in FLUX.2 Klein?

It features significantly improved text rendering compared to older models, allowing for clear and accurate typography in generated images.

What hardware do I need to run it?

FLUX.2 Klein is designed to run efficiently on consumer GPUs, requiring significantly less VRAM than the full-scale FLUX models.

Can I use it for professional work?

Absolutely. Its speed and unified editing capabilities make it excellent for professional designers, UI/UX researchers, and content creators.

What does 'Klein' mean?

'Klein' is German for 'small,' representing the model's compact and efficient architecture without sacrificing generation quality.

Is FLUX.2 Klein free to use?

You can try FLUX.2 Klein with initial credits. Continued use and higher-resolution generations may require additional credits or a subscription.

Experience the Speed of FLUX.2 Klein

FLUX.2 Klein redefines the speed of creativity with its groundbreaking compact architecture.

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History

What is FLUX.2 Klein?