Microsoft Corp. is investing $10 billion in OpenAI, whose artificial intelligence tool ChatGPT has lit up the internet since its introduction in November, amassing more than a million users within days and touching off a fresh debate over the role of AI in the workplace. Q4 2022 hedge fund letters, conferences and moreMicrosoft Corp. is investing $10 billion in OpenAI, whose artificial intelligence tool ChatGPT has lit up the internet since its introduction in November, amassing more than a million users within days and touching off a fresh debate over the role of AI in the workplace. Q4 2022 hedge fund letters, conferences and more