Best SEO Tools · head-to-head

Semrush vs Ahrefs

A sourced, side-by-side comparison for seo tools. Ahrefs has the lower entry price. Every figure links to the vendor's own page and the date we captured it.

Ahrefs has the lower entry price — Semrush starts at $139.95/mo, Ahrefs at $0/mo. Free tier: Semrush No, Ahrefs Yes. HIPAA: Semrush —, Ahrefs —.

As of 2026-06-14 · figures link to their source below

Side by side

Semrush

$139.95/mo entry
Entry price$139.95/mo (Pro)
Free tierNo
HIPAA (BAA)
SOC 2
GDPRYes
Best forAll-in-one SEO and digital marketing teams needing a single platform

Ahrefs

$0/mo entry
Entry price$0/mo (Free)
Free tierYes
HIPAA (BAA)
SOC 2
GDPRYes
Best forSEO agencies and consultants needing deep backlink data

Sources — Semrush: backlinko.com (verified 2026-06-14) · Ahrefs: ahrefs.com (verified 2026-06-14)

Key features

Semrush: Keyword research (6 tools); Rank tracking (4 tools); Technical SEO site audit (3 tools); Backlink analysis and link building (6 tools); Content optimization and marketing (4 tools); Competitive and market analysis (5 tools); Local SEO (6 tools); Social media management (4 tools); Paid advertising intelligence (3 tools); AI Visibility Toolkit (AI search monitoring); AI PR Toolkit; App Center marketplace

Ahrefs: Site Explorer (backlink and organic traffic analysis); Keywords Explorer (2.5B+ keyword database); Site Audit (technical SEO crawler); Rank Tracker (SERP position monitoring); Content Explorer (content research and gap analysis); Web Analytics (first-party, cookieless); Social Media Manager (beta); AI Content Helper; Brand Radar (AI search visibility monitoring); MCP connector for AI assistant integrations

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