Semrush vs Ahrefs: Which SEO Tool Is Better for Your Business?

Semrush and Ahrefs are two of the best-known SEO platforms, and most buyers end up comparing them. Both cover keyword research, site audits, rank tracking and competitor analysis. The practical differences are in pricing structure, free access, add-ons and how each handles AI search visibility.

Quick verdict

Semrush offers a free plan and a 7-day trial, with AI visibility tracking bundled into higher plans. Ahrefs offers a low-priced Starter plan and a free tool for verified sites, but no trial. For small sites on a tight budget, Ahrefs Starter or Ahrefs Free is the lower-cost start. For teams that want one broad platform and a trial period, Semrush is the more straightforward test.

Side-by-side comparison

Key differences

Pricing

Semrush starts its paid plans at $139 a month, or $117.33 a month billed annually. Ahrefs starts at $29 for Starter and $129 for Lite. These tiers are not like for like, so compare limits: the Ahrefs Lite plan lists 5 projects, 750 tracked keywords and one user, while Semrush’s SEO plan lists 5 websites and 500 keywords a day.

Free access

Semrush’s free plan gives one demo project and 10 reports a day. Ahrefs Free is for site owners who verify their website and includes Site Audit and limited Site Explorer data. Ahrefs does not offer a paid trial or discounts.

AI search visibility

Semrush includes AI visibility tracking in its Starter, Pro+ and Advanced plans, with AI prompts per day listed by tier. Ahrefs sells Brand Radar as an add-on from $199 a month and custom prompt packages from $50. If tracking brand mentions in AI answers matters, check how the cost compares with your budget.

Users and add-ons

Semrush lists additional users from $45 a month. Ahrefs lists extra users at $40 to $100 a month depending on plan, plus add-ons such as Report Builder and Project Boost.

Features

Semrush markets a broad platform covering search and AI visibility. Ahrefs lists tools including Site Explorer, Keywords Explorer, Rank Tracker, Site Audit, Content Explorer and Web Analytics. Each vendor also offers an API and an MCP server. Feature depth varies by plan, so use the trial or free tier on your own site.

Ease of use and integrations

We did not test usability. Both include onboarding materials and reporting tools. Check whether the exports, dashboards and integrations you need are included in the plan you will actually buy.

Advantages and limitations

Semrush

• Advantages: free plan, 7-day trial, AI visibility bundled into several plans.
• Limitations: higher entry price; extra users and reports cost more.

Ahrefs

• Advantages: $29 Starter, free tool for your own site, clear project and keyword limits.
• Limitations: no trial; AI visibility is a separate add-on; costs rise quickly with extra users.

Which should different users choose?

• Site owner starting out: use Ahrefs Free and Semrush’s free plan on your site first.
• Small business with a limited budget: Ahrefs Starter is the lowest-priced paid entry point.
• Marketer who wants a trial before paying: Semrush’s 7-day trial.
• Agency or multi-site team: compare project, user and reporting limits across plans.

For a wider view, see our roundup of the best SEO tools for small businesses and our guide to Semrush alternatives.

FAQs

Which has better data?

Each publishes its own database figures, and we have not verified them independently. Test with keywords and competitors you know well.

Can I switch later?

Yes. Export keyword lists and reports before you cancel.

Is the free plan enough?

For learning and basic audits on your own site, possibly. Competitor research at scale needs a paid plan.

Conclusion

Neither tool is universally better. Use free access first, compare plan limits at the size you need, and choose the platform whose workflow you will actually use every week.