OpenAI is reportedly close to securing a US$40 billion funding round, led by Japan’s SoftBank Group, according to sources familiar with the discussions.

Additional investors, including Magnetar Capital, Coatue Management, Founders Fund, and Altimeter Capital Management, are also in talks to participate.

This round could value OpenAI at US$300 billion, nearly doubling its US$157 billion valuation from October 2023, per PitchBook data.

SoftBank is expected to invest US$7.5 billion upfront, with other investors contributing US$2.5 billion, followed by a US$30 billion second tranche later.

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