Rigetti to deliver a 100-plus-qubit system with 99.5% fidelity by the end of 2025

Outcome

Outcome sources

• The Quantum Insider Rigetti Updates Timeline for Cepheus-1-108Q Quantum Processor
  Independent coverageJan 13, 2026

  “Rigetti Computing has revised its roadmap, pushing the general availability of its 108-qubit Cepheus-1-108Q system to around the end of Q1 2026. The delay is driven by additional testing and a new chip iteration to address tunable coupler complexities and improve two-qubit gate fidelity toward a 99.5% median target.”

• The Quantum Insider Rigetti Announces General Availability of 108-Qubit System
  Independent coverageApr 8, 2026

  “The system is currently performing at a 99.1% median two-qubit gate fidelity with a gate speed of ~60 ns and a 99.9% median single-gate fidelity.”

Sources (2)

• The Quantum Insider Rigetti Posts Losses, But Moves Forward on Roadmap With 100-Qubit System by End of 2025
  Independent coverageNov 13, 2024

  “By the end of 2025, Rigetti expects to expand beyond the 36-qubit system to a configuration with more than 100 qubits, while maintaining the same fidelity target.”

• The Quantum Insider Rigetti Reports Revenue Dip, Expands Partnerships And R&D Ambitions
  Independent coverageNov 11, 2025

  “On the technology front, we remain on track to deliver our 100+ qubit chiplet-based quantum system with an anticipated 99.5% median two-qubit gate fidelity by the end of 2025.”