SoftBank Finalizes $22.5B Boost to OpenAI, Secures ~11% Stake

December 31, 2025 – SoftBank Group Corp. announced today that it has fully completed its previously pledged investment in OpenAI. On December 26, the Japanese conglomerate injected an additional 22.5billionintotheartificialintelligence(AI)researchlab,fulfillingitsMarchcommitmenttoinvestupto30 billion in two phases. With this latest infusion, SoftBank now holds approximately an 11% stake in OpenAI. The total investment commitment, which has now reached…

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