Andreessen Horowitz与Kleiner Perkins联合领投，英伟达参投；来自Anthropic、xAI、DeepMind和OpenAI约20人团队正在开发自动化AI研究的AI系统
The US-led cluster of companies training frontier AI from scratch, raising more than US$375bn in early 2026, reshaping corporate competition, export controls, and global geopolitics.
California's San Francisco Bay Area technology cluster, capturing nearly half of all US venture capital in 2025 and anchoring the global race in AI and defence technology.