Anthropic is meeting with potential investors to shore up confidence in what could be the largest IPO of all time, offering assurances about its rapid pace of growth and strategies it expects will help address a growing public backlash against AI. The $965 billion artificial-intelligence juggernaut is staring down a host of fresh challenges that are leading investors to take a more critical look at the company’s business, including the recent popularity of cheaper AI systems made in China, tensions with the Trump administration and a growing  backlash to data-center construction across the U.S. In recent weeks, investors have pressed Anthropic executives on…