Together AI raises $800M Series C at $8.3B valuation, led by Aramco Ventures

Together AI, an AI neocloud provider that rents Nvidia GPU clusters and AI infrastructure, has raised $800 million in Series C funding at an $8.3 billion valuation, the company announced July 1, 2026. The round was led by Aramco Ventures, with participation from Vista Equity Partners, General Catalyst, Emergence Capital, Nvidia, March Capital, Pegatron, and SentinelOne's S Ventures, among others. The company was founded in 2022. Together AI claims annual bookings of over $1.15 billion as of its last quarter and says it has thousands of paying customers, including Cursor, Cognition, and Decagon. The company says usage of open source models across the industry has tripled in the past year, citing research from AI gateway OpenRouter. Together AI last raised a $305 million Series B at a $3.3 billion valuation about 16 months ago. The company was co-founded by CEO Vipul Ved Prakash, Stanford professor Percy Liang, and ETH Zurich/University of Chicago associate professor Ce Zhang.