Ahrefs: the backlink database that defined the category
Ahrefs has held the title of "best backlink data in SEO" for over a decade and that lead has not narrowed. The crawler indexes the web at a scale (15+ trillion external backlinks, 500M+ keywords, 200+ countries) that no competitor has been able to match consistently. For SEO professionals whose work depends on understanding link profiles — yours, your competitors', and your prospects' — Ahrefs is still the reference tool.
The platform is organized around five core products: Site Explorer (the backlink and traffic profile of any URL), Keywords Explorer (keyword research with SERP overview), Content Explorer (a search engine of high-performing content across the web), Rank Tracker, and Site Audit. The 2025 UI refresh tightened the navigation and added a much-requested project-based dashboard. The product has also slowly absorbed AI features — the AI Content Helper scores content quality, the AI suggestions in Site Audit prioritize fixes, and the new "Brand Radar" tracks brand mentions and AI search visibility.
Brand Radar deserves attention
Added in late 2025, Brand Radar tracks how often your brand appears in ChatGPT, Perplexity, Gemini, and Claude responses for specific queries. As LLM-driven search continues to chip away at Google traffic, this is the kind of data point most SEO teams will need going forward. Ahrefs was first to ship a credible product here and the data so far is more reliable than competitors' early attempts.
What Ahrefs is best at
Backlink analysis, period. Site Explorer's link profile data is fresher, deeper, and more accurate than anyone else's. The "lost vs new" tracking, anchor text distribution, and referring IP/domain breakdowns are the gold standard. Content Explorer is a quietly underrated weapon for content strategy — search any topic and see the highest-performing content across the web with traffic, links, and shares.
What Ahrefs is weaker at
Paid search/PPC research. Semrush is materially stronger here. Ahrefs has Yep (its own search engine) and some PPC features but it is not where the team invests. Local SEO is also weaker — no real local SEO product to speak of.
Pricing — the new model
The 2024 pricing change to a credit-based model was controversial. The base subscription (Lite $99/month) gives a fixed credit pool that all reports consume from. Heavy users hit credit walls and need overage credits ($45 per 1000) or a higher tier. Standard ($199/month) is the practical entry for SEO professionals. Advanced ($399/month) and Enterprise (custom) add depth and seats. Whether the credit model is fairer than Semrush's project-cap model depends on your usage — light users save money, heavy users pay more.
Integrations
Google Search Console, Google Analytics, Looker Studio, Slack notifications for rank changes and crawl errors, plus a real REST API on Advanced and Enterprise. The Looker Studio connector is best-in-class for client reporting.
Versus Semrush
For backlinks: Ahrefs. For competitive intelligence breadth and PPC: Semrush. For keyword research: roughly tied — Semrush has a larger raw database, Ahrefs has cleaner SERP overviews. For agencies needing one platform spanning everything: Semrush. For SEO specialists who care most about rankings and links: Ahrefs. Many serious SEO shops pay for both, treating Ahrefs as the link-and-rank tool and Semrush as the marketing-suite tool.