SITUATION EXPLAINED: Meta is one of Anthropic's largest customers while Zuckerberg attacks it publicly. • Meta internally projected spending as much as $10 billion a year on Anthropic's models, against the $65 billion in revenue Anthropic estimated in July • It cut back this summer but is still spending hundreds of millions a month • Meta uses Anthropic's models to power and test Hatch, its coming personal agent, which is derived from OpenClaw and will run inside Instagram • Nat Friedman has…