TMTPOST -- SoftBank Group Corp. may put in more than previously reported amount of money in the latest OpenAI’s funding round, overtaking Microsoft Corporation as the biggest investor. Credit:Pixabay SoftBank is close to finalize a $40 billion primary investment in OpenAI at a $260 billion valuation, CNBC reported on Friday. The Japanese tech and telecoms giant is reported to pay out the funding over the coming 12 to 24 months, and its first payment up to $10 billion could come as soon as spring. The funding would lift OpenAI’s post-money valuation to $300 billion, and made SoftBank replace Microsoft as the top backer of OpenAI. Microsoft began to invested in OpenAI in 2019 as the ChatGPT developer’s early investor and input a total of $13 billion as of September 30. OpenAI announced