Together AI Secures $800 Million Series C, Valued at Over $8 Billion

Key Points

• Together AI raised $800 million in a Series C round led by Aramco Ventures.
• Valuation exceeds $8 billion after the financing.
• Investors include Vista Equity Partners, General Catalyst, Nvidia, March Capital, Pegatron and SentinelOne’s S Ventures.
• Company reports more than $1 billion in annual bookings and a threefold increase in open‑source model usage.
• Customers include Cursor, Cognition (Devin AI), and Decagon.
• Funding will fund compute expansion and accelerate the inference‑engine platform.
• Founders: CEO Vipul Ved Prakash (ex‑Topsy), co‑founders Percy Liang (Stanford) and Ce Zhang (ETH Zurich, University of Chicago).
• Series B raised $305 million in Feb 2025 at a $3 billion valuation; Series A raised $102 million in Nov 2023.
• Software layer claims up to 80 % cost reduction for running popular AI models.
• Aramco Ventures’ involvement highlights Middle Eastern interest in AI infrastructure.