Summary Verdict
KVYO: 3—ACIW: 2wins
Rule of 40
48.5KVYO
28.0ACIW
check_circleKVYO leads
Revenue Growth
31.6%KVYO
10.4%ACIW
check_circleKVYO leads
Gross Margin
75%KVYO
49%ACIW
check_circleKVYO leads
FCF Margin
16.9%KVYO
17.6%ACIW
check_circleACIW leads
Operating Margin
-5.5%KVYO
18.8%ACIW
check_circleACIW leads
NRR
—KVYO
—ACIW
Metric
Rule of 40Efficiency score
KVYO
48.5check_circle
ACIW
28.0
Revenue GrowthYoY
KVYO
31.6%check_circle
ACIW
10.4%
Gross Margin% of revenue
KVYO
75%check_circle
ACIW
49%
FCF MarginFree cash flow
KVYO
16.9%
ACIW
17.6%check_circle
Operating MarginGAAP
KVYO
-5.5%
ACIW
18.8%check_circle
NRRNet retention
KVYO
N/A
ACIW
N/A
EV / RevenueValuation multiple
KVYO
N/A
ACIW
N/A
Market CapUSD
KVYO
N/A
ACIW
N/A
ARR GrowthYoY
KVYO
N/A
ACIW
N/A
CAC PaybackMonths to recover
KVYO
N/A
ACIW
N/A
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insights
Analysis
As of Q4 2025, Klaviyo, Inc. trades at N/A EV/Revenue versus ACI WORLDWIDE, INC. at N/A. On the Rule of 40, Klaviyo, Inc. scores 48.5 compared to ACI WORLDWIDE, INC.'s 28.0, placing Klaviyo, Inc. ahead in operating efficiency. Gross margins stand at Klaviyo, Inc. 75% vs ACI WORLDWIDE, INC. 49%.
Sector Context
Both companies operate in the Vertical SaaS sector. The median columns above show where each company stands relative to their peers.