OpenAI Finalizes $40 Billion Funding Round, Valuing Company at $300 Billion, with Microsoft Contribution

MSFT
October 04, 2025

OpenAI announced it finalized a $40 billion funding round, led by SoftBank Group, which values the company at $300 billion. Microsoft and other investment groups are also contributing to this funding. The capital will be used to advance AI research, expand computational infrastructure, and enhance its tools, including a partnership with SoftBank and Oracle on the $500 billion Stargate project.

This massive funding injection is crucial for OpenAI to maintain its leadership in the costly AI development race. For Microsoft, its participation in this round reinforces its strategic commitment to OpenAI and ensures its continued access to cutting-edge AI models. The successful fundraising solidifies the financial foundation for future AI innovation within Microsoft's broader ecosystem.

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