RGTI vs QSI: Which Quantum Stock Is Better?
Rigetti Computing (Superconducting) vs Quantum-Si (Quantum Biology) — live market, SEC financial and quantum-hardware data side by side.
RGTI is the larger company at $6.21B market cap, about 31× the size of QSI ($201.23M).
RGTI reports more revenue ($7.09M vs $2.44M for QSI, latest fiscal year).
On cash runway — the metric that decides who needs to raise money first — RGTI is stronger (82mo vs 24mo).
| Metric | RGTIRigetti Computing | QSIQuantum-Si |
|---|
| Market |
| Price | $18.68 | $0.9241 |
| Market Cap | $6.21B | $201.23M |
| 1Y Return | +64.9% | -51.4% |
| 52W High | $58.15 | $3.10 |
| 52W Low | $11.23 | $0.69 |
| Financials |
| Revenue (latest FY) | $7.09M | $2.44M |
| Revenue YoY | -34.3% | -20.3% |
| Net Income | $-216,210,000 | $-101,339,000 |
| Cash & Equivalents | $418.25M | $190.40M |
| Cash Runway | 82mo | 24mo |
| Risk |
| Going Concern Flag | No | No |
| ATM Offerings (dilution) | 66 | 29 |
| Daily Short Vol % | 58.7% | 38.8% |
| Beta (1Y vs SPY) | 0.89 | 1.35 |
| Government & Research |
| Federal Awards Total | $8.87M | $30.30M |
| Academic Citations | 43K | — |
| Patents | — | — |
| Quantum Technology |
| Physical Qubits | 108 | — |
| Qubit Modality | Physical Qubits (Superconducting, Modular Chiplet) | — |
| 2Q Gate Fidelity | 99.1% | — |
| Cloud Platforms | AWS Braket, QCS (Direct API), Azure Quantum (planned) | — |
| Roadmap Target | Lyra (336 qubits, late 2026 narrow advantage target); 1,000+ qubits by end of 2027; utility-scale ~2027–2029 | Proteus commercial launch late 2026 (18+ amino acids, ~1,000× throughput); 20 of 20 amino acids by 2027 |
| Company |
| Founded | 2013 | 2017 |
| Headquarters | Berkeley, CA | Guilford, CT |
| Employees | — | — |
RGTI vs QSI FAQ
Is RGTI or QSI the bigger company?
RGTI is larger, with a market cap of $6.21B versus $201.23M for QSI.
Which has the longer cash runway, RGTI or QSI?
RGTI's cash runway is 82mo and QSI's is 24mo (current cash ÷ trailing-twelve-month operating burn; "CF+" means cash-flow positive).
What technology do RGTI and QSI use?
Rigetti Computing (RGTI): Physical Qubits (Superconducting, Modular Chiplet). Quantum-Si (QSI): Quantum Biology. Qubit counts are not directly comparable across different modalities.
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