SoftBank Gets $40B Loan for OpenAI Bet

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SoftBank is doubling down on its massive bet on OpenAI with one of the largest corporate borrowings in recent memory.

On March 27, 2026, the Japanese conglomerate announced it had secured a $40 billion unsecured bridge loan to fund a $30 billion follow-on investment in the ChatGPT maker and for general corporate purposes. The one-year facility, maturing in March 2027, was arranged with a syndicate of major banks including JPMorgan Chase, Goldman Sachs, Mizuho Bank, Sumitomo Mitsui Banking Corp, and MUFG Bank.

The move comes just weeks after SoftBank committed to the $30 billion additional stake through its Vision Fund 2. Once completed, the company’s total investment in OpenAI is expected to reach approximately $64.6 billion, giving it an ownership interest of around 13%. The bridge loan provides immediate liquidity while SoftBank lines up longer-term financing, including potential asset sales.

Masayoshi Son, SoftBank’s founder and CEO, has made no secret of his conviction in artificial general intelligence. He has repeatedly described OpenAI as a clear leader with unmatched technology and user base, positioning the investment as central to SoftBank’s broader “ASI strategy”, a push toward artificial superintelligence. This latest infusion adds to more than $30 billion SoftBank had already deployed into OpenAI since late 2024.

For OpenAI, the capital injection arrives at a critical juncture. The company continues burning through enormous sums on compute infrastructure and talent as it races to develop more powerful models. SoftBank’s commitment signals strong ongoing confidence from one of its largest backers amid intensifying competition from players like Anthropic, Google, and xAI.

Yet the financing also highlights the aggressive leverage SoftBank is willing to employ. The $40 billion bridge loan, the largest dollar-denominated borrowing in the company’s history, adds meaningfully to its debt load at a time when global interest rates remain elevated and AI valuations are under scrutiny. Son has a long track record of bold, sometimes controversial bets, from the original Vision Fund’s mixed results to heavy stakes in companies like WeWork and Arm.

The structure gives SoftBank breathing room. Bridge loans of this type are typically refinanced through equity raises, asset disposals, or longer-term debt once markets stabilize or specific exits materialize. In this case, observers see the move as potentially paving the way for an OpenAI IPO sometime in 2026 or 2027, which could help SoftBank realize gains and repay the facility.

This development underscores the staggering capital requirements of the current AI race. Building and training frontier models demands tens of billions in compute, energy, and talent, sums that even well-funded startups struggle to raise without heavyweight strategic partners. SoftBank’s willingness to borrow heavily to stay in the game reflects how central OpenAI has become to its portfolio and future identity.

For the broader market, the transaction sends mixed signals. On one hand, it demonstrates continued strong investor appetite for top-tier AI companies even at elevated valuations. On the other, it raises questions about concentration risk: how much of SoftBank’s balance sheet and strategy now rides on a single private company still years from consistent profitability?

As the dust settles, attention will turn to how quickly SoftBank can refinance or repay the bridge loan and whether this level of leverage pays off as OpenAI pushes toward commercialization at scale. For now, Masayoshi Son is betting bigger than ever that OpenAI will define the next era of technology, and he’s borrowing accordingly to make sure SoftBank remains at the table.