Funding

OpenAI Raises $40B in Historic Round, Hits $300B Valuation

Ken Metral

31 Mar 2025 — 1 min read

Credit: OpenAI, Inc.

OpenAI just made history. On Monday, the company announced it had closed a staggering $40 billion funding round—one of the largest private raises ever—pushing its post-money valuation to an eye-popping $300 billion.

According to a blog post on OpenAI’s website, the round was led by SoftBank, with participation from major players including Microsoft, Coatue, Altimeter, and Thrive Capital.

“This new capital enables us to push the frontiers of AI research even further, scale our compute infrastructure, and deliver increasingly powerful tools for the 500 million people who use ChatGPT every week,” the company wrote.

A significant portion of the funds—around $18 billion—will go toward OpenAI’s ambitious Stargate project, a massive initiative to build a nationwide network of advanced AI data centers across the U.S. The project signals OpenAI’s long-term bet on infrastructure as the backbone of next-generation artificial intelligence.

Partnering with SoftBank is no small detail. The Japanese conglomerate is known for identifying and scaling transformative tech, and OpenAI says it sees the partnership as a key piece in accelerating its global reach and capabilities.

With 500 million weekly users of ChatGPT and growing demand for AI tools across industries, this funding round cements OpenAI as not only a leader in artificial intelligence—but one of the most valuable private tech companies in the world.

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