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SoftBank said to weigh up to $30b more in OpenAI

SoftBank is reportedly in talks to invest up to US$30 billion more in OpenAI.

The Japanese firm previously invested US$41 billion in OpenAI in 2025, valuing the company at about US$300 billion at the time.

A secondary share sale in October valued OpenAI at around US$500 billion, based on Pitchbook data.

Neither SoftBank nor OpenAI have confirmed the new investment talks, and both did not respond to requests for comment.

🔗 Source: Reuters

🧠 Food for thought

Implications, context, and why it matters.

SoftBank’s funding capacity and use of proceeds are unclear

  • The Wall Street Journal reported that talks are being held for SoftBank to invest up to an added $30 billion in OpenAI, but the ability to fund that amount has not been established in the Reuters item or the provided sources.
  • Its latest free cash flow was reported as negative ¥787 billion 1.
  • The intended use of the money has not been confirmed. OpenAI’s Stargate project has been described as a $500 billion, multi-year effort aimed at 10 gigawatts (GW) of AI data center capacity 2, yet the SoftBank discussions have not been tied to Stargate in the Reuters item or the supplied material.

AI data centers’ power constraints may benefit energy and grid suppliers

  • Energy and infrastructure investors face a constraint around power availability for new AI data centers 3.
  • OpenAI has said Stargate sites will use locally tailored energy plans. That can include dedicated generation, storage, or transmission capacity 4.
  • Energy developers and grid equipment suppliers may gain from that buildout. The Financial Times reported shortages plus longer lead times for large electric transformers, and a supplier said delivery times were “three to four times” longer than in 2020 3.

Recent OpenAI developments

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