Ahrefs vs. Semrush: Which SEO Tool Is Right for You?

Ahrefs and Semrush are two of the most popular SEO tools for professional search engine optimization. While both serve similar purposes, they take different approaches: Semrush positions itself as an all-in-one online marketing suite, while Ahrefs focuses solely on SEO. So which one is the better choice?

We put both platforms to the test to help you decide which tool fits your needs.

For our comparison, we rated Ahrefs and Semrush across seven categories, including ease of use, keyword research, backlink analysis, costs, and support. We scored each category and used those scores to calculate an overall rating.

Semrush wins our comparison, but that doesn’t automatically make it the better choice for everyone. Ahrefs outperforms Semrush in some areas. Let’s take a closer look at the key differences.

The differences between the two tools become clear right from the start. Ahrefs is built entirely around SEO, so its interface is clean and focused. Semrush, on the other hand, combines features for multiple marketing areas (content marketing, social media, and PPC) in a single dashboard.

Semrush offers more features, while Ahrefs stays laser-focused. That’s why Ahrefs scores 8.5 out of 10 in this category, and Semrush 7.5.

Ahrefs has a clean, modern design that makes data easy to understand. Once you log in, you land on a straightforward dashboard with quick access to all the key tools. Charts and graphs turn even complex data into clear insights.

The navigation is simple and well-organized. Tooltips, question mark icons, and built-in tutorial videos explain the more advanced features. Performance is another advantage: reports load quickly, and even in-depth domain analyses appear without noticeable delays.

The interface isn’t perfect, though. Some features appear in more than one place, which can be confusing at first. Backlink data, for example, shows up in both the Site Explorer and the separate Backlinks module. Even so, Ahrefs stays easy and intuitive to use.

In Semrush, the SEO tools are part of a larger marketing suite that also covers content marketing, social media, and PPC.

For agencies and larger teams that need all these tools, this is a big plus. But if you only use Semrush for SEO, you’ll have to navigate through a lot of irrelevant menu items.

Overall performance is strong, though we ran into slow loading times during the backlink audit. The localizations in other languages also have gaps, with English terms popping up in the middle of an international interface.

Both tools are nearly identical when it comes to keyword rankings, top pages, gap analysis, and analyzing organic competitors. Semrush stands out with a longer data history and slightly more accurate traffic estimates.

Overall, Semrush edges out Ahrefs with 16.5 out of 20 points, compared to Ahrefs’ 16.

The Site Explorer is the core competitor analysis tool in Ahrefs. Enter a domain, and you’ll get detailed insights into organic traffic, rankings, and top-performing content.

The “Content Gap” feature lets you compare up to ten competitors and shows which keywords they rank for while you don’t.

Ahrefs analyzes competitors at all four levels (domain, subdomain, directory, and URL) for a highly detailed breakdown.

One particularly useful feature is its analysis of referring IP addresses: this reveals whether a competitor's backlinks come from natural sources or potentially manipulated link networks.

Ahrefs clearly displays all key traffic metrics, including organic traffic, paid traffic, traffic value, and geographic distribution. Ahrefs stores five years of historical data, while Semrush keeps up to fourteen years.

In our test, Ahrefs’ traffic estimates were less accurate. With a 45.4% accuracy rate, it ranked in the bottom third of the comparison.

Ahrefs and Semrush offer similar features, but Semrush has the edge in two key areas. First, its historical data goes back 14 years, more than double Ahrefs’ five-year range. That makes it easier to analyze long-term trends across multiple Google updates.

Semrush also analyzes your competitors’ paid search ads and social media activity. Its automatic competitor detection surfaces relevant rivals so you don’t have to search for them.

Ahrefs offers a more detailed site structure analysis since Semrush doesn’t provide data on internal links. In our test, Semrush’s traffic estimates were 49.1% accurate, slightly better than Ahrefs, though both still performed around the middle of our comparison.

Backlinks are one of Google’s most important ranking factors, so reliable backlink analysis is a must.

Both tools cover all the key aspects of backlink analysis: backlink history, referring domains and IP addresses, broken links, anchor text analysis, and backlink gap analysis.

In the SEO industry, Ahrefs is best known for its backlink index. The company claims to run the most active web crawler after Google, updating its index every 15 to 30 minutes. As a result, deleted links disappear from the index faster than with many competitors, keeping backlink data more current.

Ahrefs performed well in our backlink source comparison, identifying an average of 5,627 referring domains. That’s fewer than Semrush, but for a good reason: while other tools count outdated or inactive links, Ahrefs removes them to keep its index clean.

Ahrefs’ Backlink Explorer gives you all the key metrics at a glance: referring domains, anchor texts, and link profile history. But it doesn’t include an automatic toxicity score, so you’ll have to evaluate problematic backlinks manually. That can be time-consuming for larger link profiles.

In our test, Semrush identified an average of 8,927 referring domains, putting it well ahead of Ahrefs. Its backlink database is one of the largest on the market, updates daily, and reliably detects redirects and JavaScript links.

The filtering options are nearly identical. Both tools let you filter by link age, link type, anchor text, traffic of the linking page, nofollow or dofollow links, link position, language, and link authority.

Semrush’s biggest advantage over Ahrefs is its automatic Toxicity Score, which flags backlinks as toxic, potentially toxic, or safe. This makes it much easier to evaluate large link profiles. The built-in link-building tool also suggests relevant sources for new backlinks to help you grow your profile.

Keyword research is the foundation of any content strategy, and here too, Semrush and Ahrefs offer nearly identical features. Both provide monthly and country-specific search volume, keyword difficulty, CPC, search intent, current and historical SERPs, SERP comparisons, SERP overlap, and keyword clustering. The main differences come down to database size and the accuracy of search volume data.

Ahrefs’ Keywords Explorer includes all the essential metrics and covers 170 countries. One notable feature is its “Parent Topics,” which group keywords into broader topic clusters and make it easier to plan content around related themes. It also offers extensive filtering options.

For the number of keyword suggestions, Ahrefs landed in the lower middle of the pack in our test, finding an average of 1,801 keyword variations per seed keyword.

Search volume accuracy was stronger. Ahrefs scored 73.4%, landing in third place overall, solid enough for strategic planning.

Semrush takes a two-pronged approach to keyword research. You can analyze search terms on their own or evaluate them in the context of your own domain. The “Keyword Magic Tool” generates a wide range of keyword ideas from a single seed keyword, while the “Strategy Builder” automatically groups them into thematic clusters.

The filtering options here are also extensive. Semrush lets you filter by search volume, keyword difficulty, CPC, search intent, SERP features, and word count, among others.

In our test, Semrush scored 75.3% for search volume accuracy, placing it second overall. It also pulls ahead on the number of keyword suggestions, delivering an average of 3,331 per seed keyword, almost twice as many as Ahrefs.

Rank tracking, site audits, AI tools, and extra features: this is where the two tools differ the most. Semrush is a full online marketing suite, so it comes with far more features.

Ahrefs’ Site Audit is a cloud-based crawler that detects over 170 predefined SEO issues and automatically sorts them into errors, warnings, or notices. For each issue, Ahrefs provides a clear description and actionable solutions.

Ahrefs tracks keyword sets at the city level within projects, but daily updates are only available as a paid add-on. Semrush includes them in every plan.

Ahrefs is currently ahead on AI features. It doesn’t just track AI Overviews in Google search results; its “Brand Radar” feature also monitors your brand’s presence in AI chatbots like ChatGPT, Gemini, and Perplexity. It also offers an AI-powered text editor.

Every plan includes Google Search Console imports, API access, and email reporting. Batch analysis, however, is only available starting with the Standard plan. Ahrefs also stands out with its Content Explorer and well-known metrics like Domain Rating and Keyword Difficulty.

Ahrefs doesn’t offer white-label reporting, which is a downside for agencies.

Semrush includes daily rank-tracking updates in every plan. Its local tracking goes even further, breaking down results by device (desktop or mobile) and adding metrics like SERP features and competitive comparisons.

Semrush also scores high on site audits. The tool scans for technical issues, automatically prioritizes fixes, and provides detailed explanations with links to helpful articles. It also checks Core Web Vitals and HTTPS.

Semrush falls behind Ahrefs in AI tracking. It does track AI Overviews in Google search results and offers an “AI Visibility Toolkit” for monitoring external AI chatbots. But overall, Semrush leans more on AI for content creation than for tracking.

Semrush offers a much broader feature set than Ahrefs, largely because of its complete marketing suite. On top of a robust content marketing package (including an SEO Writing Assistant and Content Audit), Semrush offers social media management, local SEO, PPC analysis, white-label reporting starting at the Business plan, and bulk backlink analysis for up to 200 domains.

Both tools deliver above-average support: Semrush scores 9.5 out of 10, while Ahrefs earns 9 out of 10.

The Ahrefs blog and help center are go-to resources in the SEO industry. The content is well-researched, data-driven, and practical, backed by high-quality YouTube tutorials and the Ahrefs Academy, which offers free courses on every module.

The AI chatbot Fin delivered accurate, high-quality answers in our tests. But Ahrefs doesn’t offer phone support, which costs it half a point in our rating.

The Semrush Academy offers dozens of free courses for beginners and pros. Its help center is massive, covering nearly every feature in detail, and an active blog and YouTube channel round out the learning resources.

Semrush also gives you more ways to get help. You can reach support by email, live chat, or, depending on your region and plan, phone. In our tests, the chatbot provided quick and accurate answers. The only downside is email support, which is mostly limited to logged-in customers.

Both tools rank among the most expensive SEO solutions out there. In most pricing scenarios, Ahrefs costs more than Semrush and offers less flexibility for getting started.

Ahrefs currently offers three plans: Lite starting at $99, Standard at $191, and Advanced at $349 (all monthly when billed annually). In three of four test scenarios, Ahrefs was the most expensive tool in our comparison. It also doesn’t offer a free trial or money-back guarantee, so you can’t test it risk-free.

Semrush also offers three plans: Pro starting at $108, Guru at $190, and Business at $386 per month. That makes it cheaper than Ahrefs for beginners and teams. Only advanced users end up paying more with Semrush.

And unlike Ahrefs, Semrush offers both a free trial and a refund policy.

In our overall ranking of the best SEO platforms, Semrush and Ahrefs finish neck and neck, both among the top providers. But they focus on different things:

Both tools are among the most expensive on the market. If you’re not ready to pay for Ahrefs or Semrush, consider more affordable alternatives like SE Ranking, Ubersuggest, Serpstat, Mangools, or SpyFu. These tools are often more than enough for many use cases. We’ve rounded up the best alternatives to Semrush and Ahrefs here: