President Donald Trump talks to reporters from the Resolute Desk after signing an executive order to appoint the deputy administrator of the Federal Aviation Administration in the Oval Office at the White House on January 30, 2025 in Washington, DC.
Ishiba will meet with Masayoshi Son, founder and CEO of SoftBank Group, OpenAI chief executive Sam Altman and his co-founder Greg Brockman on Monday, the prime minister's office said in a statement.
No further details were available from the office.
SoftBank and OpenAI are part of the Stargate drive announced by US President Donald Trump to invest up to $500 billion in artificial intelligence infrastructure in the United States.
Son attended Trump's inauguration last week, followed by an announcement that SoftBank would lead the $500 billion project to build AI infrastructure in the United States along with cloud giant Oracle and ChatGPT-maker OpenAI.