AI infrastructure startup Nexthop AI has raised $500 million in a funding round led by Lightspeed Venture Partners, boosting its valuation to $4.2 billion. The round saw participation from Andreessen Horowitz and existing investors such as Altimeter Capital and Kleiner Perkins. Founded in 2024 by Anshul Sadana, former COO of Arista Networks Inc., Nexthop AI focuses on developing network hardware and software for AI data centers. The company aims to enhance network traffic management with lower power consumption and reduced latency. Nexthop is actively collaborating with major data center operators to refine its networking systems, addressing the growing demand for efficient AI computing infrastructure.