Ahrefs vs Semrush: Pricing, Rank Tracking, and What a Site Audit Actually Tells You
Last updated October 23, 2026 · 7 min read
Ahrefs and Semrush have been the default answer to “which SEO tool should we pay for” for most of a decade, and both have spent the last two years adding AI visibility tracking, content tools, and anything else that might justify a higher price. The prices did go up. Ahrefs Lite is $129 a month now. Semrush’s entry SEO plan is $139.
We have an unusual reason to care about one part of this comparison. The technical SEO work on this site runs off Ahrefs crawl reports, and the fixes are written down in our repo next to what each warning turned out to mean. Most Ahrefs vs Semrush articles compare database sizes and screenshots. This one also covers what a site audit tells a small team in practice, and how much of it you need to pay for.
The Short Version
Buy Semrush if the same person handles SEO and paid search, because the keyword and PPC data sit in one plan and its rank tracking updates daily at the entry tier. Buy Ahrefs if your work is mostly content and links and you want the cleaner interface. If you run one site of a few hundred pages and mainly want the audit, buy neither yet. Ahrefs Webmaster Tools is free.
Pricing in October 2026
Both vendors discount annual billing by roughly 17%. The table uses list prices from each pricing page, plus Semrush’s knowledge base for its audit limits.
| Feature | Ahrefs | Semrush |
|---|---|---|
| Entry plan | Lite, $129/mo or about $107/mo annually | SEO, $139/mo or $117.33/mo annually |
| Extra users | $40/mo each, up to two more on Lite | From $45/mo each |
| Projects | 5 unverified, unlimited verified | 5 websites |
| Rank tracking | 750 keywords | 500 keywords, updated daily |
| Site Audit allowance | 100,000 crawl credits | 100,000 pages a month, 20,000 per audit (Pro tier) |
| Next tier up | Standard, $249/mo, 2,000 keywords | $299/mo, 15 projects, 1,500 keywords |
| Free option | Webmaster Tools for verified sites | 1 demo project, 10 reports a day |
Seats move the bill more than the plan. Ahrefs Lite caps you at three users, so a team of four lands on Standard whether or not it needs 2,000 tracked keywords. Semrush charges for every extra login too, and agencies with a junior analyst and a client-facing lead feel that every month.
Keyword and Backlink Data
Reviewers disagree about whose index is bigger, and the disagreement is useful. One long-running comparison quotes each vendor’s own database claims, both in the tens of billions of keywords. Another ran the same domains through both tools and got more referring domains back from Semrush. Both are probably right for the domains they tested. Past a certain size the index stops deciding anything, and for a site the size of ours both tools find the links that matter.
The bigger difference is scope. Semrush sells a marketing suite with PPC research, local listings and social tools in the same login, plus an AI Visibility Toolkit. Ahrefs stays closer to search: Site Explorer, Keywords Explorer, Rank Tracker, and Brand Radar for tracking how often AI assistants mention you, with a monthly allowance of AI prompt checks (150 on Lite). If you also run Google Ads, Semrush saves you a second tool. If you don’t, you are paying for rooms you won’t enter.
What a Site Audit Actually Told Us
Between September and October 2026, Ahrefs flagged a long list on this site. A few of the rows, in order of how much they mattered:
- 49 of our 83 comparison pages and all 6 blog posts had no incoming internal links. Nothing pointed at them.
- 19 comparison titles were too long, because a “ | SaaSVersus” suffix added 13 characters to every one.
- The homepage HTML weighed 364 KB and was marked as a slow page.
- 93 URLs reported broken JavaScript.
- Five URLs answered with a redirect.
The orphans were real and the worst thing on the list; pages existed in the build and the registry that feeds our navigation never mentioned them. The titles were a one-line fix. The broken JavaScript was real for exactly as long as one crawl: a deploy landed mid-crawl, the previous deploy’s hashed files stopped resolving, and the fix was a Vercel setting called Skew Protection. Rows dated before that fix kept appearing in the report for weeks.
The redirects were deliberate. Each one is a retired URL pointing at its closest replacement, and deleting them to clear the warning would have turned five redirects into five 404s.
And one outbound link to smartsheet.com showed up as broken, because Smartsheet answers AhrefsBot with a 404 on every path while a normal browser gets the page.
Some of that list needed code. The rest needed someone who could tell a stale row from a live one, and no subscription tier sells that. What the $129 or $139 actually buys is competitor data. For auditing your own site, Ahrefs Webmaster Tools gives 5,000 crawl credits per verified project per month, charged only for HTML pages that return a 200. This site has about a hundred pages. The free tier could crawl it roughly fifty times a month. Semrush’s free plan, one demo project and ten reports a day, is a trial in all but name.
Pair either audit with Search Console, and with real analytics for what happens after the click. Our Google Analytics vs Mixpanel vs Amplitude comparison covers that side.
Rank Tracking
Semrush refreshes its 500 tracked keywords daily on the entry plan, while Ahrefs gives you 750 on Lite and, in every review we read, updates them weekly at that level, which is fine for a content site in a quiet month and close to useless in the week after you move platforms (if a platform move is coming, read our Webflow vs WordPress comparison first).
Who Should Choose Which
Choose Semrush if one marketer owns organic and paid search, or if you report rankings to clients who expect daily movement. The broader suite earns its price only when you use the PPC and local tools; otherwise it is the more expensive way to get the same keyword list.
Choose Ahrefs if your growth comes from content and links, you want to see which competitor pages earn backlinks, and you would rather learn one tool well. Lite is enough for a solo operator, though its six months of history gets thin fast once you start comparing this spring to last spring. Watch the three-seat ceiling.
Choose neither, for now, if you have one site and no competitor research to do. Verify it in Ahrefs Webmaster Tools and Search Console, fix what the crawl finds, and buy a paid plan the month you need to look at someone else’s domain.
The Verdict
For a small team running one content site, start with Ahrefs Webmaster Tools and Search Console, then pay for Ahrefs Lite when competitor backlink research becomes a weekly job. Pick Semrush when paid search is part of the same person’s work, since daily rank tracking and PPC data in one plan beat two subscriptions. Most teams overspend on the audit. It is the one part of this category with a genuinely free version, and its findings still need a human who knows which rows are stale.
Frequently Asked Questions
Is Ahrefs Webmaster Tools actually free?
Yes, for sites you can verify. Ahrefs says you can use it on an unlimited number of verified sites, with 5,000 Site Audit crawl credits per project per month and Site Explorer views of up to 1,000 backlinks or keywords at a time. It does not let you look at a competitor's domain. That part is what the paid plans sell.
Which is cheaper for a team of three?
Ahrefs, slightly, at list price. Lite is $129 a month with one user, and you can add two more at $40 each, so $209. Semrush's entry SEO plan is $139 a month and extra users start at $45, so at least $229. Ahrefs Lite tops out at three users, though. A fourth person pushes you to Standard at $249 before seats.
Why does my audit still show errors I already fixed?
Because the report describes the last crawl, and the last crawl happened before your fix. Re-run the crawl before you reopen the ticket. On this site, Ahrefs kept showing broken JavaScript rows for weeks after the cause was fixed, and every one of them was dated before the fix.
Related Comparisons
- Google Analytics vs Mixpanel vs Amplitude: what visitors do after search sends them to you
- Webflow vs WordPress: the platform decision that decides what your audit can fix
- Hotjar vs FullStory vs Clarity vs LogRocket: watching the sessions your rankings bring in
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