Cambridge-based startup CuspAI raised $450 million in a funding round co-led by Kleiner Perkins, with participation from Jeff Bezos and UK government's sovereign AI fund. Valued at $2.6 billion, the firm uses agentic AI platform 'MIRA' to discover rare materials for chipmaking and clean energy. CuspAI is also partnering with giants like NVIDIA, Meta and Hyundai to tackle supply chains.