Semrush vs Ahrefs
The comparison behind most SEO tool budgets.
The result
- SemrushTransparency 35/100 EBand ERank 10 of 30 in SEO tools
- AhrefsTransparency 50/100 DBand DRank 2 of 30 in SEO tools
1 difference out of 10 criteria we could measure for both, last measured 2026-08-31. They match on 9 of the 10 criteria we could measure for both.
Public transparency score, not a product or security rating. This page compares what these two vendors publish, not what their products do.
Where they differ
| Criterion | What we found |
|---|---|
| Data processing agreement | We found it for Ahrefs (source). For Semrush we checked 8 addresses and found none. |
Where they match
Found for both, each with its source on the vendor page:
Found for neither at the addresses we checked (7 for Semrush, 7 for Ahrefs on the first of them). That is what we found, not a statement about what either vendor has.
- Subprocessor list
- Status page with history
- Certifications named
- Uptime SLA with a figure
- No third-party tracking before consent
- security.txt (RFC 9116)
The full labels
Every criterion with its weight, and the band each vendor lands in. Every line links the page we found it on; a cross means we found nothing at the addresses we checked.
Transparency labelsaas-ranking.com
Semrush
- A
- B
- C
- D
- E
- F
Published commitments2 of 7 found, 2 not measured
- not foundData processing agreement×3
- not foundSubprocessor list×3
- foundData location stated×3
- not foundStatus page with history×2
- foundPublic pricing×2
- not measuredNotice before subprocessors change×2
- not foundCertifications named×1
- not foundUptime SLA with a figure×1
- not measuredNamed privacy contact×1
Measured behaviour1 of 3 found
- foundHTTPS enforced with HSTS×2
- not foundNo third-party tracking before consent×2
- not foundsecurity.txt (RFC 9116)×1
Checked 2026-08-31. Every line links the page we found it on. A cross means we found nothing at the addresses we checked, not that the vendor has no such document. A transparency score, not a product rating.
Transparency labelsaas-ranking.com
Ahrefs
- A
- B
- C
- D
- E
- F
Published commitments3 of 7 found, 2 not measured
- foundData processing agreement×3
- not foundSubprocessor list×3
- foundData location stated×3
- not foundStatus page with history×2
- foundPublic pricing×2
- not measuredNotice before subprocessors change×2
- not foundCertifications named×1
- not foundUptime SLA with a figure×1
- not measuredNamed privacy contact×1
Measured behaviour1 of 3 found
- foundHTTPS enforced with HSTS×2
- not foundNo third-party tracking before consent×2
- not foundsecurity.txt (RFC 9116)×1
Checked 2026-08-31. Every line links the page we found it on. A cross means we found nothing at the addresses we checked, not that the vendor has no such document. A transparency score, not a product rating.
Keep going
The order of the two names is the order of our editorial list. It is not a ranking, and no vendor pays to appear here or to appear first. See how we measure.