Ahrefs

Ahrefs is the tool most SEO professionals reach for first, and for good reason: it owns one of the two biggest web crawlers in the world and turns that crawl data into keyword research, backlink analysis, rank tracking, site audits and competitor research. If you've ever compared "Ahrefs vs Semrush", you're comparing the two suites that dominate this category.

The product has matured well beyond a keyword tool. Today's Ahrefs is a platform of interconnected tools: Site Explorer for any domain's organic and paid footprint, Keywords Explorer for search demand and difficulty, Rank Tracker for positions, Site Audit for technical issues, and — newer — Brand Radar and AI-prompt tracking for visibility inside ChatGPT, Perplexity, Gemini and Copilot. Everything shares one data model, which is the real advantage over stitching free tools together.

What changed recently is the packaging. Ahrefs moved to a credit-based model on entry plans, added a cheap Starter tier, and folded "Ahrefs Webmaster Tools" (the free tier for verified sites) into "Ahrefs Free". Prices have crept up over the years — the Lite plan that cost less a few years ago now sits at $129/month — but the data quality remains the reason people pay.

How Ahrefs works

1. Verify your site (or add projects) to unlock the full toolset.
2. Research keywords and competitors in Keywords Explorer and Site Explorer.
3. Track rankings and audit technical health on a schedule.
4. Use the data to prioritise content, links and fixes — or export it into reports and AI assistants via API/MCP.

Key capabilities

Keywords Explorer — search volume, difficulty, clicks and traffic potential for millions of keywords, plus question and matching-term ideas.

Site Explorer — organic and paid keywords, backlinks, referring domains and top pages for any site.

Rank Tracker — daily or weekly position tracking across devices and locations, with AI Overview tracking on higher plans.

Site Audit — crawl your site for technical SEO issues, with JavaScript rendering and scheduled recrawls.

Backlinks — the largest live backlink index in the industry, with historical data going back years on higher plans.

Brand Radar & AI prompt tracking — monitor how often and where your brand appears in AI answers.

Ahrefs API & MCP — pipe SEO data into ChatGPT, Claude and custom workflows.

Content opportunities and alerts — find keywords competitors rank for that you don't.

Ahrefs plans and pricing explained

Ahrefs Free — $0. For verified sites: limited Site Audit, Webmaster Tools-style data and a taste of the platform. The honest starting point.

Starter — $29/month (monthly renewal only, no annual option). 200 credits a month, 50 tracked keywords, 1 unverified project — a low-commitment on-ramp, though the credit cap is tight.

Lite — $129/month ($107/month billed annually, roughly). 1,000 credits per user per month, 5 unverified projects, 750 tracked keywords, 100,000 crawl credits, 6 months of historical data, 150 AI-prompt checks. The plan most solo SEOs and small sites land on.

Standard — $249/month ($207 annually). Unlimited credits, 20 projects, 2,000 tracked keywords, 500,000 crawl credits, 2 years of history, API and MCP access, extra users at $60/month.

Advanced — $449/month ($374 annually). 50 projects, 5,000 keywords, 1.5M crawl credits, 5 years of history, more users at $80/month.

Enterprise — $1,499/month on an annual commitment. 100+ projects, unlimited history, API at scale, extra users at $100/month.

Credits are Ahrefs' usage currency on Lite/Starter — actions like running reports consume them. Standard and above get unlimited credits, which is a meaningful jump in what the plan can actually do day to day.

Where it fits in a stack

Ahrefs is the research and measurement layer — it tells you what to target and whether it worked. It pairs naturally with a content-optimisation tool like Surfer or Clearscope for the writing side, and with Google Search Console for first-party performance data. Agencies typically run Ahrefs alongside a reporting layer because the raw data is powerful but dense.

What you should know before buying

Ahrefs is a professional tool with professional pricing. The Lite plan is the real entry point; Starter's credit cap makes it a trial-with-extra-steps for most people. There's no content-optimisation editor — that's Surfer or Clearscope's job — and no free trial of paid plans beyond Ahrefs Free.

The data is the moat: backlink index, keyword database and crawler coverage are consistently rated the best in class. If SEO is core to your business and you can use the data, it's worth every dollar. If you just need occasional keyword checks, free tools or Ubersuggest will cover you for a fraction of the price.

Ahrefs suits operators who treat SEO as a system: research keywords, build links, publish, measure, repeat. The data depth means you can answer questions free tools can't — true keyword difficulty, referring-domain quality, historical position changes — and the API/MCP access means that data can flow into the AI assistants and dashboards your team already uses.

For agencies and in-house teams, Standard is the sweet spot — unlimited credits and API access remove the friction that makes Lite frustrating at scale.