OpenAI has completed its restructuring, pushing longtime benefactor Microsoft’s valuation north of $4 trillion. The artificial intelligence (AI) startup announced Tuesday (Oct. 28) that it had transformed its for-profit arm into a public benefit corporation. The new arrangement gives Microsoft a 27% stake — worth roughly $135 billion — in that unit. “What began as an investment in a research organization has grown into one of the most successful partnerships in our industry,” OpenAI...
