Quantinuum

Quantinuum, the Honeywell spinout, built the world's highest-fidelity quantum computer with a 56-qubit System Model H2 delivering best-in-class performance. Its commercial API enables enterprises to run quantum algorithms today, achieving a 99.5% two-qubit gate fidelity. This outperforms #2 Google Quantum AI's Willow chip by 0.3% in gate fidelity, and its 56-qubit count is 30% larger than the typical rival in its class, with a $200 million investment fueling continued development.