---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-26-040377"
form_type: "8-K"
ticker: "RGTI"
cik: "0001838359"
company_name: "Rigetti Computing, Inc."
filed_at: "2026-04-07T23:59:59+00:00"
generated_at: "2026-05-15T07:06:22.007537+00:00"
event_type: "other_material"
sentiment: "positive"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Rigetti Computing announces general availability of 108-qubit system Cepheus-1-108Q

## Summary
- Cepheus-1-108Q is Rigetti's highest qubit-count system, with twelve interconnected 9-qubit chiplets.
- System performs at 99.1% median two-qubit gate fidelity and 99.9% median single-gate fidelity with ~60 ns gate speed.
- Available via Rigetti Quantum Cloud Services and on Amazon Braket, as first gate-based device over 100 qubits.
- Rigetti plans to improve two-qubit fidelity to 99.5% later in 2026 and update roadmap toward quantum advantage in ~3 years.
- CEO Dr. Subodh Kulkarni states the chiplet-based architecture validates scaling approach for fault-tolerant quantum computing.

## SEC filing metadata
- accession: 0001104659-26-040377
- form_type: 8-K
- ticker: RGTI
- cik: 0001838359
- company_name: Rigetti Computing, Inc.
- filed_at: 2026-04-07T23:59:59+00:00
- event_type: other_material
- sentiment: positive
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 7.01, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1838359/000110465926040377/0001104659-26-040377-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1838359/000110465926040377/tm2611278d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-26-040377
- JSON: https://secwatch.observer/filing/0001104659-26-040377.json
- Plain text: https://secwatch.observer/filing/0001104659-26-040377.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.