SoftBank Group is looking to boost its existing 11% stake in OpenAI to an even more substantial amount. Bloomberg reported that the Japan investment company is holding discussions about investing up to an additional $30 billion in the maker of ChatGPT. SoftBank has a 11 per cent stake in OpenAI after making a $22.5 billion investment through its SoftBank Vision Fund 2 at the end of 2025. Earlier in 2025, it injected $7.5 billion into the US company and raised $11 billion from third-party investors. In November, SoftBank Group chair Masayoshi Son said together with OpenAI “we’re driving the AI revolution to the next stage”.