Ahrefs costs more than Moz. The question is whether the premium is worth it. This comparison focuses on where each tool genuinely excels — and gives you a direct answer based on your use case, not a vague "both are great."
| Tier | Moz Pro plan | Moz monthly | Moz annual | Ahrefs plan | Ahrefs monthly | Ahrefs annual |
|---|---|---|---|---|---|---|
| Starter/entry | Starter | $49 | $39 | Starter | $29 | $29 |
| Standard/Lite | Standard | $99 | $79 | Lite | $129 | $108 |
| Medium/Standard | Medium (3 users) | $179 | $143 | Standard (1 user) | $249 | $208 |
| Large/Advanced | Large (3 users) | $299 | $239 | Advanced (3 users) | $449 | $374 |
Note: Ahrefs Starter ($29/mo) is cheaper than any Moz plan but has very limited functionality — primarily useful for beginners. Ahrefs annual uses 2 months free pricing (16.6% discount).
Ahrefs has the most comprehensive backlink index of any SEO tool. It crawls the web more frequently than Moz, reports more linking domains, and updates backlink data faster. Moz's Link Explorer is functional — you can check backlinks, see anchor text, and identify toxic links — but the index is smaller and less frequently updated. For professional link building, competitor link analysis, disavow file management, or Link Intersect analysis, Ahrefs is meaningfully better. If backlinks are your primary SEO activity, Ahrefs is worth the $30/month premium over Moz Standard.
Both tools offer solid keyword research. Ahrefs Keywords Explorer has a larger volume data set and strong SERP analysis. Moz's Keyword Explorer is praised for its difficulty scoring accuracy and intuitive interface — many SEO professionals find it easier to use for initial keyword research workflows.
For most keyword research tasks, the practical difference between the two tools is minimal. Both produce reliable difficulty scores and search volume estimates. The choice between them for keyword research alone does not justify a $30/month premium — that premium is for the backlink database.
| Feature | Moz Standard ($99/mo) | Ahrefs Lite ($129/mo) |
|---|---|---|
| Keyword tracking | 300 keywords | 750 keywords |
| Projects / sites | 3 sites | 5 projects |
| Users included | 1 (3 on Medium $179) | 1 |
| Backlink database | Good — Link Explorer | Best — largest index |
| Backlink update frequency | Regular | More frequent crawling |
| Keyword research | Excellent UI and difficulty scoring | Excellent — larger database |
| Site audit | 400K pages/mo | 100K pages/mo per project |
| Content Explorer | ✗ | ✓ (limited on Lite) |
| Domain Authority metric | ✓ DA (industry standard) | Domain Rating (DR) |
| Free tier for site owners | ✗ | ✓ Ahrefs Webmaster Tools |
| Affiliate programme | ✓ (via Impact) | ✗ No affiliate programme |
| Interface ease of use | Simpler | Feature-rich but more complex |
Ahrefs offers free Site Audit and backlink data for site owners who verify their domain. AWT does not allow competitor research — only your own verified sites. But for checking your own site's technical health and backlink profile, it is genuinely useful at zero cost. See all free SEO tools →
Pay for Ahrefs if backlinks are your primary SEO activity. The backlink index is superior, link building workflows are better supported, and it is the industry standard for serious link analysis. The $30/month premium over Moz Standard is easily justified if you use backlink tools daily. Choose Moz if keyword research and rank tracking are your primary workflows — particularly if you have a team (Moz Medium's 3-seat pricing dramatically undercuts Ahrefs Standard for multi-user accounts). Moz saves $348/year over Ahrefs Lite for a single user, and far more for teams.