Rigetti vs IonQ: Which Quantum Computing Stock Is the Smarter Buy?

Key Takeaways Rigetti launched Cepheus-1-36Q, halving error rates and targeting a 100+ qubit system by year-end.IonQ topped Q2 revenue guidance, raised $1.6B pro forma cash, and expanded via global partnerships.Estimates see RGTI sales down 19.65% in 2025, while IONQ sales are projected to grow 119.02%.Quantum computing is moving from lab prototypes to commercial pathways, and for investors, two pure-play names, Rigetti Computing (RGTI) and IonQ (IONQ) , stand out. Both are racing to deliver systems capable ...