SoftBank Group (TYO:9984) is in talks to lead a funding round of up to $40 billion in OpenAI, valuing the ChatGPT maker at $300 billion, sources said. If finalized, this would mark a record-breaking private funding

SoftBank has offered a term sheet that would value OpenAI at a pre-money valuation, meaning the valuation without the funding of the current round, at $260 billion.

OpenAI is seeking to raise up to $40 billion in new funding at a valuation of $340 billion, the Wall Street Journal reported today.