San Francisco hosts OpenAI, Anthropic, and roughly 90 other AI unicorns worth a combined $600 billion. The Economist calls it the AI capital of the world. They also call it an economic laggard. Both things appear true at once.

Luxury real estate in the city's priciest zip codes jumped almost 10% in a year. But that mirrors gains in the Hamptons and Aspen, driven by macro trends and a rising stock market, not AI wealth specifically. Laurene Powell Jobs buying a mansion doesn't mean the AI boom has arrived for everyone else.

Rohin Dhar and other Hacker News commenters point to skyrocketing rents and busier streets over the past year. The rebound is visible. But AI tools are flooding companies with unreviewed code, while specialized engineering salaries spike and administrative roles keep shrinking.

SF's AI boom isn't imaginary. It just doesn't spread. Ask around the Mission whether AI has changed anyone's rent or job prospects. You'll get blank looks.