Germany's Black Forest Labs Raises $300M
Black Forest Labs, a German startup specializing in visual AI models, has raised $300 million at a $3.25 billion valuation, making it one of Europe's most valuable AI companies. The company's Flux models are being used to develop a new generation of multimodal applications. The funding round highlights growing investor interest in specialized, high-performance AI models developed outside of the U.S.
- The company’s founders, Robin Rombach, Andreas Blattmann, and Patrick Esser, were key researchers at Stability AI and were part of the team that created the foundational research for the popular open-source image model, Stable Diffusion. - The Series B round was co-led by Salesforce Ventures and Anjney Midha AMP, with strategic participation from NVIDIA, Canva Ventures, and Figma Ventures, indicating a go-to-market strategy focused on enterprise workflows and creative tool integration. This brings the company's total funding to over $450 million. - The Flux models utilize a hybrid architecture combining transformer and diffusion techniques, scaled up to 32 billion parameters for the FLUX.2 model. They are built on a "flow matching" training method, a newer technique that generalizes the diffusion process used by models like Stable Diffusion. - A key partnership with NVIDIA is optimizing the demanding FLUX.2 models for consumer and professional RTX GPUs. By using FP8 quantization, the model's VRAM requirement is reduced by 40% and performance is increased by 40%, making the high-end visual models more accessible than if they required large datacenter-grade hardware. - Black Forest Labs employs a tiered GTM model, offering open-weight "Dev" models for non-commercial use, a fast "Schnell" model, and a high-performance "Pro" version accessible via API and platforms like Microsoft Azure AI Foundry, Replicate, and TogetherAI. - Enterprise adoption includes integrations with Adobe, Canva, Meta, and Microsoft. Sacra estimates the company reached $96M in annualized revenue as of August 2025 and signed a multi-year, $140 million contract with Meta for use of its technology.
