ACI WORLDWIDE, INC. vs Klaviyo, Inc.
Side-by-Side SaaS Metrics & Valuation Comparison
analyticsVertical SaaS
Data as of Q2 2026
Summary Verdict
ACIW: 2—KVYO: 3wins
Rule of 40
26.1ACIW
47.7KVYO
check_circleKVYO leads
Revenue Growth
9.1%ACIW
42.1%KVYO
check_circleKVYO leads
Gross Margin
46%ACIW
75%KVYO
check_circleKVYO leads
FCF Margin
17.0%ACIW
5.6%KVYO
check_circleACIW leads
Operating Margin
15.2%ACIW
-4.2%KVYO
check_circleACIW leads
NRR
—ACIW
—KVYO
Metric
Rule of 40Efficiency score
ACIW
26.1
KVYO
47.7check_circle
Revenue GrowthYoY
ACIW
9.1%
KVYO
42.1%check_circle
Gross Margin% of revenue
ACIW
46%
KVYO
75%check_circle
FCF MarginFree cash flow
ACIW
17.0%check_circle
KVYO
5.6%
Operating MarginGAAP
ACIW
15.2%check_circle
KVYO
-4.2%
NRRNet retention
ACIW
N/A
KVYO
N/A
EV / RevenueValuation multiple
ACIW
3.5x
KVYO
N/A
Market CapUSD
ACIW
$5.3B
KVYO
N/A
ARR GrowthYoY
ACIW
N/A
KVYO
N/A
CAC PaybackMonths to recover
ACIW
N/A
KVYO
N/A
insights
Analysis
As of Q2 2026, ACI WORLDWIDE, INC. trades at 3.5x EV/Revenue versus Klaviyo, Inc. at N/A. On the Rule of 40, ACI WORLDWIDE, INC. scores 26.1 compared to Klaviyo, Inc.'s 47.7, placing Klaviyo, Inc. ahead in operating efficiency. Gross margins stand at ACI WORLDWIDE, INC. 46% vs Klaviyo, Inc. 75%.
Sector Context
Both companies operate in the Vertical SaaS sector. The median columns above show where each company stands relative to their peers.