SoftBank and OpenAI form joint venture in Japan
A $3 billion deal to expand AI technology.

SoftBank Group CEO Masayoshi Son announced on Monday that he has agreed with OpenAI CEO Sam Altman to establish a joint venture in Japan, called SB OpenAI Japan, to offer AI services to corporate clients. This venture will be jointly owned by OpenAI and a company set up by SoftBank and its telecoms arm. In addition, SoftBank will pay $3 billion annually to integrate OpenAI’s technology across its group companies.
Son’s involvement with OpenAI is deepening, with reports indicating that SoftBank plans to invest between $15 billion and $25 billion in the company. SoftBank is also committing $15 billion to Stargate, a joint venture with OpenAI and Oracle to build AI capacity in the US. Son’s support for OpenAI follows a period of retrenchment for the investment giant, but he is reasserting his influence in the tech sector after setbacks in SoftBank’s tech portfolio.
In the context of rising competition, China’s DeepSeek has prompted some investors to question the immense funds being poured into US-based AI companies. However, Altman believes global demand for AI computing power will continue to surge. Son and Altman also met with Japanese Prime Minister Shigeru Ishiba on Monday to discuss further developments.