March 31, 2026 — OpenAI closed a funding round totaling $122 billion in committed capital at an $852 billion post-money valuation, expanding on the $110 billion round it had announced in February.
What happened
The round followed a $110 billion raise closed on February 27, 2026 at an $840 billion valuation, with SoftBank, Nvidia and Amazon among the largest contributors. OpenAI described the additional capital as funding for its next phase of AI infrastructure and research.
Why it matters
Funding rounds of this size, arriving within weeks of one another, show how capital-intensive frontier AI development has become and how deeply intertwined AI labs’ finances now are with their chip and cloud suppliers, several of whom are also investors.
Security and infrastructure impact
The scale of committed capital gives a sense of the infrastructure build-out still to come, reinforcing the case for security and safety planning to be built into new AI data-center projects from the design stage rather than retrofitted later.
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