Mark Zuckerberg recently indirectly took aim at rival Anthropic in an essay, saying that leading AI labs were trying to consolidate power while painting the future as filled with doom. The 6,500-word essay claims the balance of power will favor larger institutions over individuals if those labs lead. Meta is a heavy user of Anthropic's AI products. It is internally projected to spend as much as $10 billion annually on Anthropic's services, making it one of the AI lab's largest customers.