Arcee AI announced a $150M+ Series B on Sept 16, 2026 valuing it above $1 billion, led by Vista Equity, Cambium and Emergence with Hitachi, Wipro and M12. It built its Trinity model family, including a 400B-parameter mixture-of-experts model, for about $20 million and will expand work with the US DOE and national labs.
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Arcee AI hits $1B+ valuation with $150M Series B for open-weight models
Why this matters for founders
Founders who want to own and self-host models can adopt Arcee's open-weight Trinity family for customizable, lower-cost deployment instead of closed API-only models.
Source: SiliconANGLE
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