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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.

Direct verdict: RGTI vs QSI

RGTI leads this data snapshot on 3 of the five headline market, financial, runway, return and dilution measures with comparable data. The better investment still depends on valuation, technology execution and risk tolerance.

RGTI is the larger company at $4.72B market cap, about 18× the size of QSI ($265.67M).

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 (78mo vs 15mo).

RGTI vs QSI Performance (% return, all start at 0%)
4/135/126/107/138/119/10-35%+0%+35%+70%+105%
QSI+62.2%RGTI-3.6%
MetricRGTIRigetti ComputingQSIQuantum-Si
Market
Price$14.14$1.22
Market Cap$4.72B$265.67M
1Y Return-70.0%-29.9%
52W High$58.15$3.10
52W Low$12.53$0.69
Financials
Revenue (latest FY)$7.09M$2.44M
Revenue YoY-34.3%-20.3%
Net Income-$216.21M-$101.34M
Cash & Equivalents$393.71M$111.78M
Cash Runway78mo15mo
Risk
Going Concern FlagNoNo
ATM Offerings (dilution)6629
Daily Short Vol %66.5%45.9%
Beta (1Y vs SPY)1.661.53
Government & Research
Federal Awards Total$12.10M$381.06K
Academic Citations50K—
Patents——
Quantum Technology
Physical Qubits107—
Qubit ModalityPhysical Qubits (Superconducting, Modular Chiplet)—
2Q Gate Fidelity99.1%—
Cloud PlatformsAWS Braket, QCS (Direct API), Azure Quantum, qBraid—
Roadmap TargetLyra (336 qubits, late 2026 narrow advantage target); 1,000+ qubits by end of 2027; utility-scale ~2027–2029Proteus commercial launch targeted for Q2 2027 with a 20-amino-acid commercial kit; interim September 2026 data project approximately 60× more alignments per full run than Platinum Pro
Company
Founded20132017
HeadquartersBerkeley, CAGuilford, CT
Employees162145
Company DNA0–100 rank vs all tracked stocks · missing data = 0
MomentumScaleRevenueRunwayGov $Research

Momentum = 1Y return · Scale = market cap · Runway capped at 36mo · Gov $ = federal awards · Research = citations + patents. Dollar axes use log scale.

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RGTI vs QSI FAQ

Is RGTI or QSI the bigger company?

RGTI is larger, with a market cap of $4.72B versus $265.67M for QSI.

Which has the longer cash runway, RGTI or QSI?

RGTI's cash runway is 78mo and QSI's is 15mo (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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