SEO
Moz vs Ahrefs
Ahrefs is the stronger tool for competitive keyword research and backlink analysis, and most working SEOs default to it. Moz is a reasonable, cheaper choice if you mainly need rank tracking and on-page checks for a smaller site.
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Moz Pro or Ahrefs — which should you use?
Ahrefs is the stronger tool for competitive keyword research and backlink analysis, and most working SEOs default to it. Moz is a reasonable, cheaper choice if you mainly need rank tracking and on-page checks for a smaller site. Moz Pro starts at Standard plan starts around $49/month billed annually (free tier: Free tools (Domain Authority checker, limited keyword explorer) but no full free plan.); Ahrefs starts at Starter/Lite plan starts around $129/month billed annually (free tier: Free Ahrefs Webmaster Tools for your own verified site; no free tier for the full suite.). Prices are list prices and change, so check the vendor pages before buying.
Last updated 3 August 2026
Both are full SEO suites — site audits, rank tracking, backlink analysis and keyword research — but they built their reputations on different strengths. Moz popularised metrics like Domain Authority; Ahrefs became known for having one of the largest crawled backlink indexes.
Price and depth track together here. Ahrefs costs more at every tier and gives you more raw data per query; Moz is friendlier for a beginner and enough for straightforward local or small-business SEO.
Side by side
Moz Pro and Ahrefs in short.
Moz Pro
An SEO toolset built around Domain Authority, rank tracking and site audits, aimed at approachability.
- Free
- Free tools (Domain Authority checker, limited keyword explorer) but no full free plan.
- Paid from
- Standard plan starts around $49/month billed annually
Good at
- Simpler interface that's easier for non-specialists to pick up
- Domain Authority is a widely recognised (if unofficial) metric people already reference
- Cheaper entry price than Ahrefs at comparable seat counts
Weak at
- Backlink index is smaller and updates less frequently than Ahrefs'
- Keyword and competitive research tools are less deep for large sites
Ahrefs
A comprehensive SEO suite known for one of the largest, most frequently updated backlink indexes.
- Free
- Free Ahrefs Webmaster Tools for your own verified site; no free tier for the full suite.
- Paid from
- Starter/Lite plan starts around $129/month billed annually
Good at
- Large, frequently refreshed backlink index that most competitors are compared against
- Deep keyword research including click metrics and clickstream-based data
- Site Explorer makes competitive analysis of any domain fast
Weak at
- Meaningfully more expensive than Moz at every tier
- Interface has a steeper learning curve for someone new to SEO
The differences
Where they actually diverge.
| Feature | Moz Pro | Ahrefs |
|---|---|---|
| Backlink index size | Smaller | One of the largest available |
| Keyword research depth | Good for basics | Deeper, with clickstream data |
| Site audit | Yes | Yes |
| Rank tracking | Yes | Yes |
| Entry price | ~$49/month | ~$129/month |
| Free tools | DA checker, limited keyword tool | Webmaster Tools for own site |
| Ease of use | Easier for beginners | Steeper learning curve |
| Best suited to | Small sites, local SEO | Competitive, content-heavy SEO |
Pick one
Which one fits you.
Choose Moz Pro if
- You run a small or local business site and want simple tracking, not deep research
- You want the lowest reasonable monthly cost for an all-in-one SEO tool
- You're new to SEO and want an interface that doesn't overwhelm
Choose Ahrefs if
- You compete in a crowded niche and need to study competitors' backlinks closely
- Keyword research depth matters more to you than price
- You publish enough content that a bigger, fresher index changes your decisions
When neither is the answer
If you only need to check basic technical SEO issues on one small site, Google Search Console is free and covers a lot of the same ground.
Questions
Common questions.
Is Domain Authority the same as Google's own ranking signal?
No. Domain Authority is Moz's own metric, not something Google uses directly. It's a useful comparative score but not a guaranteed predictor of rankings.
Why is Ahrefs so much more expensive?
Ahrefs prices around the size and freshness of its backlink index and keyword database, which costs significantly more to crawl and maintain than a smaller index.
Can I use the free versions of both long-term?
Moz's free tools and Ahrefs Webmaster Tools cover basic checks on your own site, but neither replaces the competitive research features in the paid suites.
Which is better for local SEO?
Moz is a common choice for local and small-business SEO because it's cheaper and its rank tracking and audit tools cover what most local sites need.
Do agencies typically use one over the other?
Larger agencies and in-house SEO teams working on competitive markets lean toward Ahrefs for its data depth; smaller shops and freelancers often use Moz to control costs.
Prices are list prices published by each vendor and change often — check the linked pricing pages before you buy. We take no affiliate commission and nobody pays to appear here.
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