Together AI Raises $800M at $8.3B Valuation as Open-Source AI Neocloud Boom Accelerates

AI infrastructure startup Together AI has raised $800 million in Series C funding led by Aramco Ventures, more than doubling its valuation to $8.3 billion. The company, which enables enterprises to run open-source AI models at lower costs than closed systems, reported annual bookings surpassing $1.15 billion.

Key Takeaways

AI infrastructure startup Together AI has raised $800 million in Series C funding led by Aramco Ventures, more than doubling its valuation to $8.3 billion.
The company, which enables enterprises to run open-source AI models at lower costs than closed systems, reported annual bookings surpassing $1.15 billion.

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Together AI, the fast-rising AI infrastructure platform, has closed an $800 million Series C funding round at an $8.3 billion valuation — more than doubling its $3.3 billion valuation from just 16 months ago.

The round was led by Aramco Ventures, the venture capital arm of Saudi Aramco, with participation from Vista Equity Partners, General Catalyst, Emergence Capital, Nvidia, Salesforce Ventures, March Capital, Pegatron, and SentinelOne's S Ventures.

Founded in 2022, Together AI provides a platform that allows companies to train and run AI workloads on open-source models such as DeepSeek, MiniMax and Kimi at significantly lower costs than proprietary closed systems. This open-source approach has proven increasingly attractive to enterprises seeking to avoid vendor lock-in and reduce AI infrastructure expenses.

Explosive Growth

The company's annual bookings have already crossed $1.15 billion as demand for open-source AI infrastructure surges. Together AI counts major AI-native firms including Cursor, Cognition, and Decagon among its customers.

CEO Vipul Ved Prakash emphasized the company's mission: "The future of AI won't be owned by a few companies. It will be built by millions of developers and businesses, and open-source models are making that possible."

Looking ahead, Together AI expects its computing capacity and infrastructure to expand roughly 50-fold over the next five years. The Series C funding will be used to widen its offerings, particularly as it expands into inference services—the process of running trained AI models.

Neocloud Boom

The massive raise is the latest sign of the accelerating "neocloud" movement — specialized cloud providers built specifically for AI workloads, challenging the dominance of traditional hyperscalers like AWS, Azure, and Google Cloud. Together AI's growth mirrors that of other AI infrastructure companies riding the wave of enterprise AI adoption, as organizations increasingly seek alternatives to the high-cost, locked-in models offered by major AI labs.