OpenAI, the creator of ChatGPT, has secured $6.6 billion in new funding from investors, potentially valuing the company at $157 billion and solidifying its position as one of the world’s most valuable private companies. Returning venture capital investors Thrive Capital and Khosla Ventures, along with OpenAI’s major corporate backer Microsoft and new investor Nvidia, have participated in this funding round. Krystal Hu for Reuters: Thrive Capital, which committed about $1.2 billion from a combination of its own fund and a special purpose vehicle for smaller investors, negotiated the option to invest another $1 billion next year at the same valuation if the AI firm hits a revenue goal, sources added. Apple, which was in talks to invest in OpenAI,…