OpenAI and Microsoft are rewriting the terms of their multibillion-dollar partnership in a high-stakes negotiation designed to allow the ChatGPT maker to launch a future IPO, while protecting the software giant's access to cutting-edge AI models, the Financial Times reported on Sunday. A critical issue is how much equity in OpenAI’s new for-profit business Microsoft will receive in exchange for the more than $13 billion it has invested in the company to date, the report said. It said Microsoft