Semrush vs Ahrefs vs Moz: Feature, Pricing, and Data Comparison

Semrush, Ahrefs, and Moz expose different databases, limits, metrics, and workflows. A useful comparison starts with the job, account tier, country, language, date, and a fixed test set.

Semrush covers the broadest marketing workflow of the 3, Ahrefs offers a focused SEO and backlink workflow, and Moz provides a simpler SEO suite with a lower entry plan. That is product positioning, not proof that one database is universally more accurate.

The vendors can report different values for the same domain because crawl timing, database coverage, canonicalization, metric definitions, location, and update frequency differ. Without a preserved test set and raw exports, those differences should not become an accuracy ranking.

Semrush vs Ahrefs vs Moz Pricing

The lowest advertised price is not automatically the closest product match. Entry plans differ in projects, tracked keywords, crawl limits, historical data, AI visibility, and whether they are intended as a lightweight research product or a full SEO suite.

Tool	Current entry point	Closest full-suite starting plan	Selected published limit
Semrush	$0 limited tier	$139/month SEO plan	5 monitored sites and 500 keywords tracked daily.
Ahrefs	$29/month Starter	$129/month Lite	Lite includes 5 projects and 750 tracked keywords.
Moz Pro	$49/month Starter	$99/month Standard	Starter is designed for 1 website; Standard lists 300 tracked keywords.

Use a shared keyword, backlink, and crawl test set before comparing data coverage. Each vendor defines databases and difficulty metrics differently, so a larger marketing number does not prove greater accuracy for your country, language, or niche.

Semrush

Semrush’s current SEO plan is $139 monthly or $117.33 per month on annual billing. It lists 5 monitored sites and 500 keywords tracked daily. Official pricing and limits

Its advantage is workflow breadth across keyword research, technical SEO, competitive research, rank tracking, content, and paid-search data. Buy that breadth only if the team will use it.

Ahrefs

Ahrefs lists Starter at $29 monthly, Lite at $129, Standard at $249, and Advanced at $449. Lite currently includes 5 projects, 750 tracked keywords, and 100,000 crawl credits. Official pricing and limits

Its workflow is strong for backlink and competitive research, but a vendor index is not the web itself. Use a fixed link building sample and record missing and duplicate URLs before judging coverage.

Moz Pro

Moz Pro lists Starter at $49 monthly, Standard at $99, Medium at $179, and Large at $299 before the published annual discount. Official pricing and limits

Domain Authority is a Moz metric, not a Google ranking signal. Moz also offers free SEO tools, which can be enough for occasional lookup work.

Keyword Research

Compare a fixed keyword set in the same country, language, device, and date. Record search volume, difficulty, CPC, SERP features, ranking URLs, missing values, and the vendor’s definition for each field.

Keyword research supports a content strategy only when the query set matches the market. A larger advertised database does not guarantee better coverage in one niche.

Backlink Analysis

Use the same list of known linking pages and target URLs. Record found, missing, duplicate, canonicalized, redirected, nofollow, and lost links, plus each tool’s first-seen and last-seen dates.

Do not compare vendor-wide index-size claims as if they were measured with one definition. The decision depends on coverage and freshness for the domains you investigate.

Site Audit

Crawl the same allowed URL set with matching limits and JavaScript settings. Compare canonicalization, redirects, status codes, duplicate content, indexability, structured data, hreflang, and internal linking.

Issue counts are not accuracy scores. One tool can split a single root cause into many warnings while another groups it once.

Rank Tracking

Match keyword, search engine, country, location, language, device, and check date. Preserve the observed URL and SERP features. Compare against Search Console only after accounting for aggregation, personalization, query privacy, and different position definitions.

Choose by Workflow

Need	Start with	Reason to verify before buying
Broad SEO, content, and paid-search workflow	Semrush	Add-ons, project limits, and team usage
Focused SEO and backlink research	Ahrefs	Credit model, projects, exports, and tracked keywords
Simpler SEO workflow and Moz metrics	Moz Pro	Campaign, crawl, and keyword limits
Occasional lookup	Free tiers or webmaster tools	Coverage and export limits

Other SEO Tool Alternatives

SE Ranking, Mangools, Serpstat, Google Search Console, Bing Webmaster Tools, and Google Analytics serve narrower or different jobs than the 3 suites above. Do not compare them from an old starting price or vendor database-size claim.

• Capture the current plan, billing term, projects, users, tracked keywords, crawl limits, exports, history, countries, and devices.
• Run the same fixed keyword, backlink, crawl, and rank-tracking sample.
• Record missing values, duplicates, refresh timing, and metric definitions.
• For small businesses, buy only the repeated workflow the team will actually use.

Google Search Console is the first-party source for a verified site’s Google Search performance. Third-party tools add competitor research and modeled data, but they do not replace the site’s own search records.

Final Verdict

Choose the least expensive plan that completes the repeated workflow with enough projects, tracked keywords, crawl capacity, exports, history, and seats. Run the same test set before committing to annual billing.

There is no evidence-backed universal winner until raw tests are stored with the account tier, date, country, language, and definitions.

Frequently Asked Questions