In the quiet days before Christmas last year, when most venture capitalists had retreated to holiday escapes in Aspen or Jackson Hole, Lightspeed Venture Partners’ investing team was contemplating a bid for a piece of OpenAI rival Anthropic.The venture capital firm approached Anthropic with an offer to lead a multibillion-dollar investment, according to a person familiar with the matter. An agreement quickly took shape: a $2 billion funding round at a $60 billion valuation, tripling what the sta...