Microsoft on Tuesday announced new strategic partnerships with Nvidia and the artificial intelligence startup Anthropic, the latest sign that the company is working to reduce its dependence on OpenAI.As part of the agreement, Microsoft will invest up to $5 billion into Anthropic, while Nvidia will invest up to $10 billion into the startup.The investments have pushed Anthropic's valuation to the range of $350 billion, up from its $183 billion valuation as of September, according to a source close...