SoftBank Group Corp. is inviting additional banks to join a $40 billion loan facility. This financing supports the company's major investment in artificial intelligence leader OpenAI.

The deal has entered a soft launch phase for new sub-underwriters. Each participating lender must commit approximately $5 billion to the facility.

This bridge facility follows more than $30 billion in existing SoftBank investments into the AI startup. The loan is scheduled to mature in March 2027.

A consortium including JPMorgan Chase and Goldman Sachs originally underwrote the debt. Major Japanese banks Mizuho and Mitsubishi UFJ Financial Group also participated in the initial group. This move highlights SoftBank's debt-fueled strategy to lead the global AI race.