Semrush vs Ahrefs

Where Semrush pulls ahead

Semrush’s SEO + AI Search plans update tracked keyword rankings daily, on every paid tier from SEO up to Advanced. Ahrefs’ Rank Tracker refreshes weekly by default on every plan, including its $1,499-a-month Enterprise tier, with no published way to pay for faster updates. For a business that needs to see a ranking move the same day content goes live or a competitor changes something, that gap is the whole decision.

Semrush is also the only one of the two with a genuine free trial: 7 days on the SEO, Starter and Pro+ plans, card required, with the authorization charge reversed if you cancel in time. Ahrefs offers no free trial and no discounts of any kind on any plan. Semrush also bundles more AI-search prompt tracking into its plans: up to 200 of your own prompts checked daily on Advanced, against Ahrefs’ 20 on its own Advanced plan.

For a single-location service business, Semrush has one more thing Ahrefs doesn’t: a standalone Local Toolkit, sold without needing a core SEO plan, for Google Business Profile management, review replies and local map tracking, starting at $30 a location a month.

Where Ahrefs pulls ahead

Cost is the clearest one. At every size in the bills above, Ahrefs comes out cheaper than Semrush’s matching plan, and it tracks as many or more keywords while doing it: Lite tracks 750 keywords against the SEO plan’s 500, and Standard tracks 2,000 against Pro+‘s 1,500, both at a lower monthly price.

Ahrefs also builds in more than Semrush does at the same price point. API and MCP access ships from Lite ($129 a month) up; on Semrush, API access is locked to the $549-a-month Advanced plan. Ahrefs’ Lite plan already includes 6 months of historical ranking and traffic data, rising to 5 years on Advanced and unlimited on Enterprise; Semrush’s own plan table states plainly that the SEO plan has none, and doesn’t say what the higher tiers include.

Team size is the one place this flips: Ahrefs’ Lite plan hard-caps a team at 3 users in total, and Standard at 6, while Semrush publishes no such ceiling — you just keep paying $45 to $100 for each extra login. An agency that will outgrow 6 seats on one Ahrefs account should price that in before it commits.

How the bill changes as your team and keyword count grow

The three bills above use the same assumptions for both tools, and the gap between them doesn’t close as a team grows. Both tools force the same upgrade pattern as keyword counts rise: past roughly 500 to 750 tracked keywords, and again past roughly 1,500 to 2,000, whatever the seat count. Add a person past the plan’s included seat and the price moves in a fixed step on both sides — $45 to $100 on Semrush depending on the plan, $20 to $100 on Ahrefs, where the low end only applies to light users on Ahrefs’ metered Lite plan. Once a team needs Semrush Advanced or Ahrefs Advanced, both plans still include only one seat, so the per-seat cost that shows up on the small-team bill keeps applying rather than shrinking. Paying annually helps on both, but not by an identical amount: Semrush’s plans save 16 to 17%, while Ahrefs’ pricing page says “save up to 17%” and its help center separately calls the same annual discount “almost 20%”. Neither turns a monthly figure into a clean annual one you can compare at a glance — the tables above already do that math for both, at each size.

What it costs to switch from one to the other

Switching means starting your historical data over, not just changing which login you use. Neither platform exports the other’s ranking history or backlink profile in a format the other imports, so moving from Ahrefs to Semrush drops whatever historical depth you had built up — 6 months on Lite, or up to 5 years on Advanced — and moving the other way means Ahrefs starts that history clock over from zero on whichever plan you land on. Rank Tracker projects, Site Audit crawl settings and tracked keyword lists on either platform have to be rebuilt by hand; neither vendor publishes a tool for moving them across.

The other switching cost is timing. Ahrefs offers no free trial, so testing it before committing to a paid plan means paying for at least one month — Starter at $29, or Lite at $129 — with no guaranteed way back if it isn’t a fit, since Ahrefs only considers a refund for an unused monthly account, case by case. Semrush’s 7-day trial is the safer way to test in the other direction, but only on the SEO, Starter or Pro+ plans, and only if you cancel inside the week before the standard rate applies.

Where most advice gets this wrong

Most head-to-head posts put Ahrefs’ Starter plan next to Semrush’s SEO plan and call Ahrefs the clear budget option, pointing at the sticker prices alone. That isn’t a comparison between two real alternatives. Starter tracks 50 keywords in a single unverified project, can’t export a single report, and can’t add a second user at any price — Ahrefs’ own help center says so directly. It’s built for a freelancer running the lightest possible check on one site, not as a cheaper stand-in for a plan that tracks 500 keywords across 5 sites with exports included.

The realistic entry comparison is Semrush’s SEO plan against Ahrefs’ Lite plan, and there Ahrefs is still the cheaper, more generous option: more tracked keywords, more historical data, and an API, all for less money than Semrush charges. The mistake isn’t picking Ahrefs — on these numbers, Lite usually is the better entry plan for a solo operator. The mistake is the reasoning: crediting Starter’s price for that win, when Starter isn’t a plan a real SEO operation could run ongoing work on.

What the free plan and free trial actually let you do

Semrush’s free account needs no card and doesn’t expire, but it’s built for occasional lookups, not ongoing tracking: one demo project, 10 reports a day across its main tools, and 10 keywords in Position Tracking. Ahrefs Free is also cardless and permanent, but shaped differently — unlimited websites you verify ownership of, with Site Explorer, Site Audit and Web Analytics on each one, though Keywords Explorer and Rank Tracker are excluded entirely. Monitor your own site’s backlinks and technical health indefinitely at no cost, and Ahrefs Free does more; check a competitor’s numbers occasionally without verifying anything, and Semrush’s free tier is the one built for that.

Trials work in one direction only. Semrush’s 7-day trial on SEO, Starter or Pro+ is the one real way to test either platform’s paid tier before paying, provided you cancel before the week is up; Ahrefs has no equivalent, and its FAQ states plainly that it runs no trials and no discounts of any kind. That makes Semrush the lower-risk way to test a paid SEO platform, and Ahrefs the platform you commit to on the strength of its published plan details alone.