Quintessent, a startup making optical interconnects for data centers, raised a $40M Series A led by Cycle Capital, following its $11.4M seed round in 2024
THE SO WHAT
Optical interconnects pulling $40M at Series A is another data point that AI cluster bottlenecks are shifting from GPUs to rack‑to‑rack bandwidth and power. If you’re planning dense training clusters, start modeling network topology and optical options as a first‑order design variable, not an afterthought for your integrator.
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