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Together AI Raises $305M in Series B Funding

Feb 20, 2025 - finsmes.com
Together AI, a San Francisco-based AI Acceleration Cloud company, has raised $305 million in Series B funding, achieving a valuation of $3.3 billion. The funding round was led by General Catalyst and Prosperity7, with participation from notable investors such as Salesforce Ventures, NVIDIA, and Kleiner Perkins. The company plans to use the funds to strengthen its position as a comprehensive platform for building with open source models, offering developers and enterprises tools to train, fine-tune, and run inference for generative AI models efficiently.

Led by CEO Vipul Ved Prakash, Together AI supports over 200 open source models across various modalities, including chat, image, and audio. Its platform is powered by proprietary technology and research innovations like FlashAttention-3 kernels. The company has already enabled over 450,000 AI developers and enterprises, including Salesforce and Zoom, to create AI applications. Recently, Together AI acquired CodeSandbox to enhance its code interpretation capabilities and expanded its leadership team with key hires such as Kai Mak as CRO.

Key takeaways:

  • Togheter AI raised $305M in Series B funding at a $3.3 billion valuation, led by General Catalyst and Prosperity7.
  • The company aims to consolidate its position as an end-to-end platform for building with open source models, supporting over 200 models across various modalities.
  • Togheter AI's platform is powered by proprietary Inference engine and research innovations like FlashAttention-3 kernels and advanced quantization techniques.
  • The company recently acquired CodeSandbox to integrate its capabilities and strengthened its leadership team with key hires, including Kai Mak as CRO.
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