SoftBank is reportedly considering a historic $25 billion investment in OpenAI, which could surpass Microsoft's stake and position SoftBank as the ChatGPT maker's largest investor.

SoftBank Group (TYO:9984) is in talks to lead a funding round of up to $40 billion in OpenAI, valuing the ChatGPT maker at $300 billion, sources said. If finalized, this would mark a record-breaking private funding

The Japanese corporation SoftBank Group has shown interest in investing as much as $25 billion in OpenAI, which would make it the organization’s biggest financial sponsor. According to a Bloomberg report,