Together AI Ups the Ante With $305M Series B

Together AI has secured a $305 million Series B investment, led by General Catalyst and co-led by Saudi Arabia’s Prosperity7 Ventures , bringing its valuation to $3.3 billion. The funding round attracted participation from a notable lineup of investors, including Salesforce Ventures , 英伟达 , Kleiner Perkins , Lux Capital , and Emergence Capital . The large capital infusion, announced on the heels of Baseten 's announcement yesterday, underscores the anticipated demand for inference-time compute, particularly for platforms that enable enterprises and developers to leverage open-source AI models at scale. The company has doubled its valuation, from $1.25 billion in early 2024, demonstrates bullish investor sentiment in Together AI's offering.

Together AI’s platform provides a comprehensive suite of AI acceleration tools, allowing developers to access and deploy open-source models such as Meta ’s Llama and DeepSeek-R1 with high-speed inference capabilities. Built on NVIDIA hardware, the company’s AI Acceleration Cloud integrates cutting-edge research innovations like FlashAttention-3 kernels and advanced quantization techniques to enhance model performance. The funding will support the expansion of Together AI’s infrastructure, including the deployment of NVIDIA Blackwell GPUs across multiple data centers. Additionally, its recent acquisition of CodeSandbox is expected to bolster its platform with built-in code interpretation, further simplifying AI application development for enterprises and developers.

With over 45,000 AI developers and enterprise customers such as Salesforce, Zoom, SK Telecom, and The Washington Post, Together AI has seen remarkable growth. The company has surpassed $100 million in annualized revenue, a sharp increase from $30 million in February 2024, highlighting the accelerating adoption of its cloud-based AI solutions. To meet rising demand, the startup plans to double its workforce—currently at 160—by the end of 2025. Its continued expansion underscores its ambition to become the leading provider of AI compute and model deployment solutions for businesses looking to harness the power of artificial intelligence.

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