Sygaldry

Sygaldry Technologies is building quantum-accelerated AI servers to exponentially speed up AI model training and inference, cutting compute costs and energy consumption. Founded in 2024 by quantum computing pioneer Chad Rigetti (founder of Rigetti Computing), Idalia Friedson (former CSO at Strangeworks), and Michael Keiser, Sygaldry's servers combine multiple complementary qubit modalities within a single fault-tolerant architecture. The company raised $139M across a $34M seed (led by Initialized Capital) and a $105M Series A (led by Breakthrough Energy Ventures), with additional backing from Y Combinator, University of Michigan, and others. Sygaldry is also developing quantum algorithms that plug into existing AI researcher toolchains, targeting the unsustainable energy and cost trajectory of classical AI infrastructure.