Ahrefs offers keyword research, backlink analysis, site audits, rank tracking, and AI brand visibility tools built on its own web index.
Ahrefs is a Singapore-based SEO and marketing data platform built around a proprietary web crawler and index. Founded in 2011, it has grown into one of the most widely used toolsets for keyword research, backlink analysis, and search visibility tracking.
Beyond traditional SEO, Ahrefs has added tools aimed at the shift toward AI-driven search, including Brand Radar, which monitors how a brand is mentioned in AI chatbot and AI Overview responses, alongside an AI assistant ('Agent A') that can query Ahrefs' data directly.
Core modules include Site Explorer for backlink and competitor research, Keywords Explorer for keyword discovery and difficulty scoring, Site Audit for technical SEO issue detection, Rank Tracker for SERP position monitoring, Content Explorer for content research, and Web Analytics for site traffic reporting. Reporting dashboards and an API are available on higher plans.
Ahrefs offers a limited free version alongside paid subscription tiers (Starter, Lite, Standard, Advanced) that scale by number of projects, tracked keywords, historical data range, and crawl credits. An Enterprise tier adds SSO, uncapped API access, and unlimited historical data under an annual commitment. Additional add-ons cover AI brand tracking, AI content tools, and custom reporting.
Yes, Ahrefs offers a limited free version with basic site data and optimization suggestions, alongside paid subscription plans.
Ahrefs is used for keyword research, backlink analysis, competitor research, technical site audits, rank tracking, and monitoring brand visibility in AI search results.
Ahrefs is headquartered in Singapore.
Yes, API access is included starting on the Lite plan, with uncapped access on Enterprise.