Ahrefs wins where data quality matters most: its backlink index is updated every 15-30 minutes (vs Semrush's longer cycles), making it more accurate for link building campaigns where timing matters. Its Site Explorer traffic estimates are consistently closer to Google Search Console actuals in independent accuracy comparisons. For SEO specialists whose primary work is link building, competitor backlink analysis, and content gap identification, Ahrefs is the clear choice over Semrush.

Ahrefs is renowned for having the most comprehensive backlink index in the SEO industry — crawling 8 billion pages per day and updating its index every 15–30 minutes. While Semrush wins on breadth of tools, Ahrefs wins on data quality: its backlink analysis, keyword difficulty scores, and traffic es…

Ahrefs Lite SEO Tools
Ahrefs Lite provides core SEO data with 5 projects and 750 tracked keywords.
$129/month or $108/month
価格
5
プロジェクト数
750
Tracked Keywords
Ahrefs Standard SEO Tools
Standard removes row limits on reports, adds Content Explorer, and portfolio analysis.
$249/month or $208/month
価格
20
プロジェクト数
2,000
Tracked Keywords
Ahrefs Advanced SEO Tools
Advanced adds full historical data, Looker Studio, custom alerts, and 5 users.
$449/month or $374/month
価格
50
プロジェクト数
5,000
Tracked Keywords