Together AI的开源云赌注：800M美元融资，估值83亿，新型云服务崛起

做的是什么生意

Together AI is an AI neocloud that rents Nvidia GPU clusters and serves 200+ open-source models for inference, training and fine-tuning, with proprietary kernels and a research lab; it claims over $1.15B annual bookings, 450,000+ developers and thousands of paying customers including Cursor, Cognition and Decagon.

启动资金：$102.5M Series A (2023, led by Kleiner Perkins), $305M Series B (February 2025, led by General Catalyst and co-led by Prosperity7), $800M Series C (July 2026, led by Aramco Ventures) at an $8.3B valuation — over $1.2B total.

起因

Together AI was founded in 2022 by Vipul Ved Prakash (who sold Topsy to Apple for a reported $200M+), Stanford professor Percy Liang and Ce Zhang, raising a $102.5M Kleiner Perkins-led Series A in 2023. Its thesis: open-source models plus optimized infrastructure, not closed frontier APIs, would power most production AI.

经过

In February 2025 the company raised a $305M Series B led by General Catalyst and Prosperity7, claiming 450,000+ developers and customers including Salesforce, Zoom, Cognition and The Washington Post, and deployed DeepSeek models with opt-out privacy controls. In July 2026 it raised an $800M Series C led by Aramco Ventures at an $8.3B valuation, reporting annual bookings above $1.15B and naming Cursor, Cognition and Decagon among thousands of paying customers.

结果

Together AI's bet is validated by market position but still contested: it says open-source model usage tripled industry-wide in the past year as companies trade frontier-API premiums for open weights, yet hyperscalers and rival neoclouds (Upscale, TensorWave, Nscale, Volta) are raising record sums into the same thesis — the question is whether any neocloud builds a moat beyond GPUs and kernels.

可借鉴之处

当开源替代品达到同等水平时，就把商品卖出去：Together通过让开放模型比封闭API更快、更便宜而获胜——并且从转变中获利，而不是对抗它。