OpenAI has closed an $8.3 billion Series F funding round, according to Reuters, in a deal that values the artificial intelligence company at $300 billion. The round was led by Thrive Capital and included participation from other major institutional investors.

The fresh capital adds to OpenAI’s already significant financial backing as the company continues to expand its products, infrastructure, and research efforts. The size of the round reflects continued investor appetite for leading AI firms, even as questions persist about competition, regulation, and the cost of building advanced models.

Reuters reported that the new financing is part of a broader capital-raising strategy tied to OpenAI’s rapid growth and mounting compute needs. The company has become one of the most closely watched players in the AI sector, with its funding milestones often seen as a gauge of confidence in the wider market.

The $300 billion valuation places OpenAI among the most highly valued private technology companies in the world, underscoring how central artificial intelligence has become to the current investment landscape.