Moz vs Semrush (2026) — The $49/Month Tool vs the $140/Month Suite

Moz Pro or Semrush?

Moz Pro costs roughly one-third what Semrush charges at the entry level — $49/month versus $139.95/month. That price gap raises an obvious question: does Semrush deliver three times the value, or is Moz Pro the smarter budget play?

The answer depends entirely on what "value" means for a given workflow. A freelancer tracking five client sites has different needs than an agency running paid campaigns across 25 accounts. Both Moz Pro and Semrush are legitimate SEO platforms, but they occupy very different positions in the market.

This comparison uses published benchmarks, aggregated G2 and Capterra reviews, and documented feature data — all verified as of July 2026. No hands-on subjective claims, just the numbers.

How Do Moz Pro and Semrush Stack Up Side by Side?

Semrush wins on raw capability across nearly every measurable category, while Moz Pro competes on price, simplicity, and the industry's most recognized authority metric. The table below captures the key differences.

Which Tool Has a Bigger Keyword Database?

Semrush's keyword database is roughly 22 times larger than Moz's — 27.8 billion keywords across 142 countries compared to Moz's 1.25 billion. Semrush wins this category by a wide margin, and the gap matters most for international campaigns and long-tail research.

Moz's Keyword Explorer covers the fundamentals well: search volume, difficulty scores, organic CTR estimates, and priority scoring that combines multiple metrics into a single actionable number. Moz also groups keyword suggestions by topic using AI-powered clustering, which saves time during content planning.

Semrush counters with the Keyword Magic Tool, which surfaces far more keyword ideas per seed term and tags every result with search intent (informational, navigational, commercial, or transactional). For teams building content strategies at scale, that intent classification eliminates hours of manual sorting. Semrush also integrates with PPC keyword data — something Moz cannot offer.

For freelancers tracking a handful of sites in one market, Moz's 1.25 billion keywords are sufficient for most organic SEO workflows. For agencies managing multi-region campaigns, Semrush's 142-country coverage and 22x larger database make it the only realistic choice. Explore more options in our best keyword research tools roundup.

Which Platform Has the Stronger Backlink Index?

Moz's Link Explorer indexes 44.8 trillion links across 1 billion root domains — an impressively large number. Semrush tracks 51 trillion backlinks across 447 million referring domains, a larger raw count with faster refresh rates.

Raw index size tells only part of the story. Moz's link data can take 7 to 14 days to surface newly acquired backlinks, while Semrush refreshes its index near-daily. For competitive link-building campaigns where timing matters — spotting a competitor's new link and reacting quickly — Semrush's freshness advantage is significant.

Moz compensates with a strong spam detection system and Spam Score metric that flags toxic links before they cause damage. Semrush offers its own Toxic Score system with a built-in disavow workflow for Google Search Console integration.

For enterprise teams running active link-building programs, Semrush's faster refresh cycle gives an operational edge. For freelancers conducting periodic link audits, Moz's larger-than-expected index provides solid coverage at a lower price point. For the strongest backlink analysis platform overall, Ahrefs remains the category leader — see our Ahrefs vs Semrush comparison for details.

How Does Domain Authority Compare to Authority Score?

Moz's Domain Authority (DA) is the SEO industry's most widely recognized authority metric, used in virtually every link-building negotiation, guest post pitch, and client report. Semrush's Authority Score (AS) is a newer metric that factors in organic traffic data alongside backlinks — making it harder to manipulate but less universally adopted.

The key methodological difference: Domain Authority focuses primarily on the link graph, modeling how Google's original PageRank worked. Authority Score combines backlink data, organic traffic signals, and spam detection. A site with a DA of 40 might carry an Authority Score of 25 to 30 because Semrush penalizes sites with inflated link profiles that lack real traffic.

For freelancers and agencies who communicate with clients using DA as a benchmark, Moz Pro provides the metric those clients already understand. For enterprise SEO teams evaluating link prospects at scale, Semrush's Authority Score catches "made-for-ads" sites that inflate DA through low-quality redirects — saving time on outreach that would otherwise target worthless domains.

Neither metric is a Google ranking factor. Both are third-party approximations. The practical question is which metric your team and clients already use.

Which Site Audit Catches More Technical Issues?

Semrush's site audit runs 140+ technical SEO checks with clear severity ratings, fix instructions, and Google Search Console integration for validation. Moz's Site Crawl runs approximately 50 checks — covering the essentials (broken links, missing meta tags, duplicate content, redirect chains, HTTPS issues) but with notably less depth.

Semrush flags issues that Moz does not scan for at all: orphan pages, crawl budget waste, hreflang conflicts, Core Web Vitals problems, and internal link equity distribution. For sites with more than 10,000 pages, those missing checks can mean real indexation problems go undetected.

Moz does schedule weekly crawls automatically with email alerts for new critical issues, which is convenient for teams that prefer passive monitoring over active auditing. Crawl limits scale by plan: 20,000 pages/month on Starter, 400,000 on Standard, 2 million on Medium, and 5 million on Large.

For agencies managing complex client sites, Semrush's audit depth is meaningfully better. For freelancers maintaining smaller sites, Moz's 50-check crawl covers the issues most likely to actually affect rankings. Use our SERP Preview tool to verify how technical fixes affect search listings.

How Does Pricing Break Down Across All Tiers?

Moz Pro's four tiers range from $49/month (Starter) to $299/month (Large). Semrush's three tiers run from $139.95/month (Pro) to $499.95/month (Business). Annual billing saves roughly 20% on Moz and 17% on Semrush.

Semrush adds optional modules that push costs higher: Local SEO ($30/mo), Social Media ($20/mo), AI Visibility ($99/mo), and Traffic & Market Trends ($289/mo). Moz Pro includes all features in every plan — the tiers differ only in usage limits, not in feature access.

For freelancers on a budget, Moz's $49/month Starter plan with a 7-day free trial is the lowest-risk entry point in the SEO tools market. For agencies billing $3,000+ monthly retainers, Semrush Pro at $139.95/month pays for itself if even one client needs PPC research or competitive intelligence. Track the cost-benefit ratio with our ROI calculator. For a broader view of how both tools compare to the market, see the AI marketing tool pricing index.

Does Semrush's AI Justify the Price Premium?

Semrush's AI feature set is substantially deeper than Moz's. Semrush Copilot analyzes data from six or more tools daily and proactively surfaces prioritized recommendations — ranking drops, keyword opportunities, competitor alerts, and backlink changes. ContentShake AI generates full articles with built-in SEO optimization and one-click WordPress publishing. The AI Visibility toolkit tracks brand mentions across ChatGPT, Gemini, Google AI Overviews, and Google AI Mode.

Moz's AI capabilities are more limited. Moz offers AI Visibility tracking (currently in beta) for monitoring brand presence in AI-generated responses, and AI-powered keyword grouping for topic clustering. Moz does not offer an AI writing assistant or AI-driven recommendations engine comparable to Semrush Copilot.

For enterprise teams evaluating AI search readiness, both tools now track AI visibility — but Semrush covers more AI platforms and integrates those insights into its Copilot workflow. For freelancers focused on traditional organic SEO, Moz's leaner AI approach may actually be a benefit — fewer features means less complexity and faster time-to-insight. For teams that rely heavily on AI-generated content, dedicated AI content writing tools like Jasper AI may complement either platform.

Which SEO Tool Should You Actually Choose?

Moz Pro and Semrush serve different buyers at different price points. The decision comes down to budget, scope, and which workflow gaps need filling.

Choose Moz Pro if: Budget is a primary constraint and SEO is the only marketing channel under management. Moz Pro's $49/month entry tier delivers Domain Authority tracking, basic keyword research, link analysis, and site crawling — the core SEO workflow — at roughly one-third the cost of Semrush's entry plan. The 7-day free trial matches Semrush's trial length, so evaluating both simultaneously is straightforward. Moz's community resources, including the MozBar browser extension and Whiteboard Friday educational content, make Moz Pro especially approachable for marketers still building SEO expertise.

Choose Semrush if: The marketing program extends beyond organic SEO into paid search, content marketing, social media tracking, or competitive intelligence. Semrush's 55+ tool suite eliminates the need for separate PPC research, content optimization, and social analytics subscriptions. The 22x larger keyword database and 140+ site audit checks provide depth that Moz cannot match. Semrush's 108,000+ paying customers reflect broad market adoption across agencies and in-house teams.

Choose Ahrefs if: Backlink analysis is the top priority. Ahrefs offers the fastest crawler refresh rate (15-30 minutes) and unique organic click metrics that neither Moz nor Semrush provide. See the Ahrefs vs Semrush comparison for the full breakdown. SE Ranking is another alternative worth evaluating for teams seeking a middle ground on price and features.

Neither Moz Pro nor Semrush is a bad choice. Moz Pro is the right tool for the budget-conscious SEO practitioner who needs the essentials done well. Semrush is the right tool for the marketing team that needs everything in one platform and can justify the higher price through broader utility.

Where Can I Learn More?

These related articles provide deeper coverage of topics discussed in this comparison.

• Moz Pro Review (2026) — Full analysis of Moz Pro's features, pricing, and where Domain Authority still matters.
• Semrush Review (2026) — In-depth look at Semrush's 55+ tool suite and whether the premium pricing delivers.
• Ahrefs vs Semrush (2026) — The other major SEO tool comparison, covering backlinks, keyword research, and pricing.
• Best Keyword Research Tools for Marketers in 2026 — Both Moz and Semrush featured alongside other options.
• SEO Tools Guide — Complete guide to the SEO tool landscape beyond individual comparisons.
• AI Marketing Tool Pricing Index (2026) — Tracks pricing shifts across both tools and 40+ others.
• AI Tool ROI Calculator — Model the payback period for Moz Pro, Semrush, or any marketing tool investment.

Sources

• Moz Pro Pricing — Current plan pricing (Starter through Large)
• Semrush Pricing — Current plan pricing (Pro through Business)
• Semrush Stats & Database — 27.8B keyword database, 51T backlink index
• Moz Link Explorer — 44.8T link index, 1B root domains
• Moz Keyword Explorer — 1.25B keyword database
• G2 — Moz Pro Reviews — 4.3/5 rating (~608 reviews)
• G2 — Semrush Reviews — 4.5/5 rating (3,434 reviews)
• Capterra — Moz Pro Reviews — 4.5/5 rating (~350 reviews)
• Capterra — Semrush Reviews — 4.6/5 rating (2,292 reviews)
• Semrush Investor Relations — Customer count and financial data