PwC is one of many major corporates to expand its ties to Anthropic in recent weeks. Matthias Balk/picture alliance via Getty Images PwC and Anthropic have announced a major expansion of their alliance partnership. PwC employees will use Claude as they help clients redesign their operating models around AI. Anthropic has surpassed OpenAI in business AI adoption, according to one recent report. Anthropic is on a mission to make Claude a default AI tool for corporate America — and the Big Four firm PwC is now one of its biggest routes in. On Thursday, PwC and Anthropic announced a major expansion of their alliance, a move that will help their efforts to embed AI into the underlying infrastructure of large companies. The expanded partnership will focus on three areas: helping engineering teams build agentic AI tools for clients, deploying AI across the dealmaking process, and reinventing clients' underlying operating models with AI.…