SoftBank to invest as much as $25B into OpenAI to become firm's largest backer: report
1. SoftBank plans up to $25 billion investment in OpenAI, its largest backer. 2. Microsoft is OpenAI's current major investor with nearly $14 billion committed. 3. OpenAI is reducing dependency on Microsoft by developing AI chips and partnerships. 4. SoftBank's potential $40 billion stake could alter dynamic with Microsoft. 5. OpenAI's valuation reached $157 billion following a $6.6 billion funding round.