Sources: OpenAI is in early talks to raise up to $40B at a $340B valuation; the startup was last valued at $157B in October, when it raised $6.6B (Wall Street Journal)

Wall Street Journal:
Sources: OpenAI is in early talks to raise up to $40B at a $340B valuation; the startup was last valued at $157B in October, when it raised $6.6B  —  SoftBank would lead $40 billion round for the ChatGPT maker, some of which would go to Stargate AI infrastructure venture.