Together AI secures 800 million dollars in a Series C funding round led by Aramco Ventures.

Together AI secures 800 million dollars in a Series C funding round led by Aramco Ventures.

      **TL;DR:** Together AI secured 800 million dollars in a Series C funding round led by Aramco Ventures, valuing the company at over eight billion dollars, aimed at expanding its open-source AI cloud platform.

      Together AI has garnered 800 million dollars in Series C funding, with Aramco Ventures spearheading the investment, resulting in a valuation exceeding eight billion dollars. The round also included participation from Vista Equity Partners, General Catalyst, Emergence Capital, Nvidia, March Capital, Pegatron, and SentinelOne’s S Ventures. The company reports generating over one billion dollars in annual bookings, noting that the utilization of open-source models on its platform has tripled in the past year, according to data from OpenRouter.

      This valuation shows a significant increase; Together AI previously raised 305 million dollars in Series B funding in February 2025 at around three billion dollars in valuation, led by General Catalyst and Prosperity7, Aramco's venture arm. Prior to that, it closed a 102 million dollar Series A in November 2023 from Kleiner Perkins, and reports emerged in March indicating the company was considering raising one billion dollars at a valuation close to seven and a half billion dollars.

      Together AI operates as a cloud platform for deploying open-source AI models, positioned between hyperscalers and developers seeking alternatives to closed systems like those from OpenAI or Anthropic. Its clients include Cursor, an AI coding tool, Cognition, the developer of the Devin AI software engineer, and Decagon, an AI customer service startup. The company plans to utilize the new funding to enhance its computing infrastructure and expedite the development of its inference engine.

      The founding team adds academic legitimacy to the company. Co-founder and CEO Vipul Ved Prakash previously created Topsy, a social analytics firm acquired by Apple in 2013 for over 200 million dollars. Co-founders Percy Liang, a Stanford computer science professor, and Ce Zhang, with past roles at ETH Zurich and the University of Chicago, contribute extensive research connections to the company, which was established in 2022.

      This funding arrives amidst a booming market investing in AI infrastructure at an unprecedented rate, with neocloud valuations climbing as the demand for GPU computing surpasses supply. Upscale AI completed a 190 million dollar extension in June, raising its total funding to 500 million dollars at a two billion dollar valuation. TensorWave, which constructs its cloud using AMD chips instead of Nvidia’s, raised 350 million dollars in Series B funding at a valuation nearing one and a half billion dollars.

      Together AI’s focus on open-source distinguishes it from neocloud competitors. While competitors like Groq and RunPod primarily rent out raw GPU capacity, Together AI combines computing with its own inference optimization software, claiming it can lower the costs of running popular models by up to 80 percent. This software layer creates a protective barrier around what could otherwise be a commodity hardware business.

      The involvement of Aramco Ventures in this funding round signifies a rising interest from the Middle East in the infrastructure supporting artificial intelligence, rather than solely in the models. A key question for Together AI is whether its open-source strategy and software advantages can withstand as hyperscalers, equipped with substantial capital, develop their own inference capabilities at an unmatched scale.

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Together AI secures 800 million dollars in a Series C funding round led by Aramco Ventures.

Together AI has secured 800 million dollars in a Series C funding round, achieving a valuation of eight billion dollars, with Aramco Ventures leading the investment, driven by the increasing demand for open-source AI computing.