head-to-head· buildability comparison
ahrefs.comvssemrush.com
which is easier to build?
→ too close to call.same tier, near-identical buildability — pick on taste.
→vs←
clone time
∞
don't∞
semrush.com
all-in-one SEO & digital marketing intelligence platform
8/ 100
buildability scorefull report ↗
moat
how deep is each moat.
tie · ±0.4
ahrefs.com · aggregate
6.2/10real moat
moat delta+0.4
semrush.com · aggregate
6.6/10real moat
8.0
capital±0
8.0
9.9
technical-0.5 →
9.4
0.0
network±0
0.0
4.0
switching±0
4.0
8.0
data+2.0 →
10.0
0.0
regulatory±0
0.0
overlap
where they fight, where they don't.
features only one ships, plus the small middle they share.
only ahrefs.com · 22
data warehouseweb scraping & signal detection pipeline
shared · 33
seo & search intelligence platformfine-tuningproprietary dataset
only semrush.com · 44
behavioral datallm inferencerate limitinguser data storage
stack
what they're built on.
shared infra and the differentiating bits.
only ahrefs.com · 22
ClickHouseReplicate
shared infra · 33
CloudflareNext.jsS3
only semrush.com · 77
Bright DataIntercomOpenAIPostgresSanitySupabaseVercel
floor
cost + time, side by side.
monthly floorahrefs.com wins
ahrefs.com
$1 + usage
semrush.com
$46 + usage
delta −$45semrush.com costs ~46× more per month to keep alive.
time to clonetie
ahrefs.com
∞
semrush.com
∞
neither is buildable as a clone — the fight here is the moat, not the build.
the verdict
ahrefs and semrush land on the same moat depth, sit in the same tier, and clone in the same window. either is a defensible weekend bet — the choice is taste, not difficulty.
full reportdon't · 8
→ read the ahrefs.com report
full reportdon't · 8
→ read the semrush.com report
← saaspocalypse · directoryhead-to-head