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Arcee AI Raises at Least $150 Million Series B at $1 Billion Valuation

Sep 17, 2026
Fortune
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Summary

Arcee AI raises at least $150 million in a Series B at a $1 billion pre-money valuation, with Vista Equity Partners, Cambium Capital, and Emergence Capital backing expansion of its models, products, and U.S. Department of Energy partnership.

Key Points

  • Arcee AI raises a Series B at a $1 billion pre-money valuation, led by Vista Equity Partners, Cambium Capital, and Emergence Capital.
  • The startup spends about $20 million to train four open-weight models, including the 400-billion-parameter Trinity Large released in early 2026.
  • Arcee declines to disclose the round size, but a source says it raises at least $150 million to build models and products and expand its U.S. Department of Energy partnership.

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