Together AI has announced a $305 million Series B funding round, led by General Catalyst and co-led by Prosperity7, to scale its AI acceleration cloud for open source and enterprise AI. The investment will accelerate the company's leadership as the preferred AI Cloud for building modern AI applications with open source models, and for training custom models with NVIDIA Blackwell GPUs. This funding will enable Together AI to expand its infrastructure, including securing 200 MW of power capacity and deploying optimized clusters of NVIDIA Blackwell GPUs across multiple North American data centers. The company's research lab continues to pioneer breakthrough methods at the intersection of AI and systems optimization, with innovations like Mixture of Agents, Medusa, Sequoia, Hyena, and Mamba that optimize AI accuracy, performance, and efficiencies. With this investment, Together AI aims to make open source AI accessible to developers and enterprises globally, advancing the frontier of AI through open collaboration, innovation, and transparency.