Together AI raises $305 million Series B to expand its AI cloud
General Catalyst led the February 2025 round, with Prosperity7 as co-lead, to support open-model inference, training and GPU infrastructure.
Together AI announced a $305 million Series B on 20 February 2025. General Catalyst led the round, with Prosperity7 as co-lead.
Participants included Salesforce Ventures, DAMAC Capital, NVIDIA, Kleiner Perkins, March Capital, Emergence Capital, Lux Capital, SE Ventures, Greycroft and Coatue. Definition, Cadenza, Long Journey Ventures, Brave Capital, Scott Banister, SK Telecom and John Chambers also invested.
The company planned to expand its cloud infrastructure for inference, model training and fine-tuning. A large-scale deployment of NVIDIA Blackwell GPUs was part of that expansion.
Together AI provides developers and businesses with infrastructure to build applications around open-source models and to train custom models. The new capital would support both computing capacity and research into more efficient AI systems.
Use of funds
Expand AI inference and training infrastructure
Deploy NVIDIA Blackwell GPU clusters