Ahrefs vs Semrush
Head-to-head with the fewertools Best Score formula (70% category fit + 30% Stack Score). Independent. No paid placements.
Semrush
Full reviewMy honest take: this is a tie I find genuinely useful, not annoying. Ahrefs and Semrush score within 0 points because they earn their marks differently. I'd pick Ahrefs when the seo power tool is the priority, and Semrush when all-in-one marketing toolkit matters more. If you're already on one of them and it's working, don't switch.
Why Ahrefs and Ahrefs tie.
Ahrefs is seo power tool. Semrush is all-in-one marketing toolkit. Both target seo workflows, and the question we get most often is which one to commit to. Here is the honest answer based on our scoring across functionality, pricing value, ease of use, reliability, and founder fit.
By the numbers, this is effectively a tie. Ahrefs scores 78 and Semrush scores 78, within 0 points. A tie on the headline doesn't mean the choice doesn't matter though. Both tools earn similar overall marks for different reasons, and the right pick depends entirely on which set of strengths matches the job in front of you.
The two tools are close across every criterion we score. There is no single factor where one pulls more than a point or two ahead of the other. That's why the headline score is tight and the real question is fit.
How they compare on every factor we score.
Best Score is the headline number (70% category fit + 30% Stack Score). The five criteria below feed Category Fit. Stack Score reflects editorial verdict, ownership stability, and pricing trajectory.
| Ahrefs | Semrush | Winner | |
|---|---|---|---|
| Best Score | 78/100 | 78/100 | Tie |
| Category Fit | 79/100 | 79/100 | Tie |
| Stack Score | 76/100 | 76/100 | Tie |
| Verdict | Recommended | Recommended | N/A |
| Pricing model | Paid | Paid | N/A |
| Ownership | Unknown | Unknown | N/A |
| Category | SEO | SEO | N/A |
| Functionality | 10/10 | 10/10 | Tie |
| Pricing value | 6/10 | 6/10 | Tie |
| Ease of use | 7/10 | 7/10 | Tie |
| Reliability | 9/10 | 9/10 | Tie |
| Founder fit | 6/10 | 6/10 | Tie |
Pick by situation, not by score alone.
Pick Ahrefs if...
- the SEO power tool
Pick Semrush if...
- all-in-one marketing toolkit
Ahrefs vs Semrush: the common questions.
Which is better for solo founders?
Both score similarly on founder fit. Pick based on which best-for line matches your current job.
Which is cheaper at the founder tier?
Ahrefs pricing model: Paid. Semrush pricing model: Paid. They land in similar pricing-value territory.
Is the ownership situation a risk for either tool?
Ahrefs has standard ownership signals. Semrush has standard ownership signals.
What's the migration cost if I'm already on the other one?
Migration cost depends on how deep you've integrated this category into your stack. For a project that uses Ahrefs or Semrush as the primary surface (not just a small embedded feature), expect a half-day to a weekend of migration work plus a week of running both in parallel. Both tools support data export. Run a fresh audit on your current stack before deciding the switch is worth it: audit my stack with both options.
How is this scoring decided?
Best Score is 70% Category Fit (graded on functionality, pricing value, ease of use, reliability, founder fit, scored 0-10 each) plus 30% Stack Score (editorial verdict + ownership stability + pricing trajectory). Same formula on every tool, no paid placements. Read the full methodology.
Why Ahrefs scored 78, and Semrush scored 78.
Best Score isn't pulled out of the air. Here's what lifted each tool and what pulled it down, criterion by criterion.
Ahrefs · 78/100
- functionality (10/10)
- reliability (9/10)
- Recommended editorial verdict
Semrush · 78/100
- functionality (10/10)
- reliability (9/10)
- Recommended editorial verdict
Which one wins in your specific situation.
- You already use Ahrefs and it's working: don't migrate. The score gap (0 points) doesn't justify the disruption. Migration costs are real · half a day to a weekend of work plus a week running both in parallel.
How each fits inside a founder stack.
A tool you can't integrate is a tool you'll replace in six months. Here's how each plays with the rest.
Ahrefs
Ahrefs fits cleanly in a stack with Vercel, Stripe, Notion, Linear. If your stack already includes most of those, Ahrefs integrates without friction.
Semrush
Semrush fits the same kind of stack. If your existing stack leans toward Vercel or Stripe or Notion, Semrush doesn't create integration debt either.
Toss-up. Pick Ahrefs if the seo power tool. Pick Semrush if all-in-one marketing toolkit. Either choice is defensible.
A tie, pick by use case.
Effectively a tie. Ahrefs (78) and Semrush (78) score within 0 points. Pick based on which best-for fits your situation: Ahrefs for the seo power tool, Semrush for all-in-one marketing toolkit.
Not sure either is right for your stack?
Paste the tools you already use. fewertools audits the whole stack: where there's overlap, where the weak links are, and which of these two (if either) actually belongs in your build.