Together AI Raises $800M Series C at $8.3B Valuation, Led by Aramco Ventures

Together AI / Yahoo Finance·medium signal

Together AI announced an $800M Series C on July 1 at an $8.3B post-money valuation, led by Aramco Ventures (Prosperity7) with NVIDIA, Vista Equity, General Catalyst, Emergence, and SentinelOne's S Ventures participating. The company positions itself as the infrastructure layer for training and serving open models (DeepSeek, Nemotron, MiniMax, Kimi) and plans to grow its capacity footprint roughly 50x over five years — a signal of continued capital flowing to open-model serving infrastructure.