Open and customized networking for AI data centers
HQ: Santa Clara, California, United States | Founded: 2024 | Employees: Not disclosed in the reviewed sources | Stage: $500M Series B at $4.2B announced March 2026 | Website: https://nexthop.ai/
Anshul Sadana founded Nexthop in 2024 after serving as Arista Networks COO, according to investor WestBridge. The business integrates networking hardware, software, optics, and interconnects around customer requirements. Official releases name SONiC and FBOSS as supported open-system foundations.
Lightspeed led the $110M launch financing and the $500M Series B. The March 10, 2026 release names a16z as a major investor and Altimeter among participants and announces scale-out, scale-across, and front-end product lines. Market opportunity and power/performance comparisons are company/investor claims, not independently established benchmarks. Named paying hyperscale customers and revenue were not disclosed in reviewed releases.
Nexthop builds switching and networking systems for hyperscalers and AI-cloud operators. It launched publicly with $110M in March 2025 and announced $500M Series B at $4.2B in March 2026. Open operating-system support and customer co-development distinguish its infrastructure strategy from closed one-size-fits-all networking.
Editorial assessment: networks can bottleneck expensive AI clusters, so power efficiency and customization have clear value. Incumbent vendors, qualification cycles, and customer concentration are major hurdles for a new hardware supplier.
Evidence boundary: financing announcements establish disclosed transactions, not audited operating performance. Unavailable headcount, margins, and retention are not estimated, and company claims remain attributed.
Category: Cloud & Infrastructure Startups
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