FLUX.1
FLUX.1 is a groundbreaking suite of open-source text-to-image models developed by Black Forest Labs, setting new benchmarks in AI-generated imagery with its 12 billion parameters. It surpasses established models like Midjourney V6, DALL-E 3, and Stable Diffusion 3 Ultra by offering superior image quality, detail, prompt fidelity, and versatility across various styles and scenes. FLUX.1 comes in three variants: Pro for top-tier commercial use, Dev for non-commercial research with efficiency akin to Pro, and Schnell for rapid personal and local development projects under an Apache 2.0 license. Its innovative use of flow matching and rotary positional embeddings allows for efficient and high-quality image synthesis, making FLUX.1 a significant advancement in the domain of AI-driven visual creativity.
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FLUX.2
FLUX.2 is built for real production workflows, delivering high-quality visuals while maintaining character, product, and style consistency across multiple reference images. It handles structured prompts, brand-safe layouts, complex text rendering, and detailed logos with precision. The model supports multi-reference inputs, editing at up to 4 megapixels, and generates both photorealistic scenes and highly stylized compositions. With a focus on reliability, FLUX.2 processes real-world creative tasks—such as infographics, product shots, and UI mockups—with exceptional stability. It represents Black Forest Labs’ open-core approach, pairing frontier-level capability with open-weight models that invite experimentation. Across its variants, FLUX.2 provides flexible options for studios, developers, and researchers who need scalable, customizable visual intelligence.
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FLUX.1 Kontext
FLUX.1 Kontext is a suite of generative flow matching models developed by Black Forest Labs, enabling users to generate and edit images using both text and image prompts. This multimodal approach allows for in-context image generation, facilitating seamless extraction and modification of visual concepts to produce coherent renderings. Unlike traditional text-to-image models, FLUX.1 Kontext unifies instant text-based image editing with text-to-image generation, offering capabilities such as character consistency, context understanding, and local editing. Users can perform targeted modifications on specific elements within an image without affecting the rest, preserve unique styles from reference images, and iteratively refine creations with minimal latency.
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FLUX.1 Krea
FLUX.1 Krea is an open source, guidance-distilled 12 billion-parameter diffusion transformer released by Krea in collaboration with Black Forest Labs, engineered to deliver superior aesthetic control and photorealism while eschewing the generic “AI look.” Fully compatible with the FLUX.1-dev ecosystem, it starts from a raw, untainted base model (flux-dev-raw) rich in world knowledge and employs a two-phase post-training pipeline, supervised fine-tuning on a hand-curated mix of high-quality and synthetic samples, followed by reinforcement learning from human feedback using opinionated preference data, to bias outputs toward a distinct style. By leveraging negative prompts during pre-training, custom loss functions for classifier-free guidance, and targeted preference labels, it achieves significant quality improvements with under one million examples, all without extensive prompting or additional LoRA modules.
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