Semrush vs Ahrefs: which SEO suite fits a SaaS team in 2026

Semrush and Ahrefs are both full SEO suites, and both now track how AI answers mention your brand. Semrush fits teams that want SEO and AI tracking in one bundle, with a free plan and a seven-day trial. Ahrefs fits teams that want a cheaper first plan, at $129 a month, and history built into every plan.

This guide compares the two on data, features, pricing and AI search tracking. Every number comes from each company's own pages, checked on 10 November 2026.

I use Ahrefs in my work, so weigh my view with that in mind. Every price and limit below comes from Semrush's and Ahrefs' own pricing pages and help pages, and is listed in the Sources at the end.

Semrush vs Ahrefs at a glance

The two suites, compared on the same seven questions. Prices are in US dollars on monthly billing, unless the row says otherwise.

What Semrush and Ahrefs are

Both are SEO suites sold as monthly subscriptions. Each runs its own web crawler, builds its own keyword and backlink databases, and sells access by plan.

Semrush

Semrush sells its tools as toolkits. Its main bundle, Semrush One, "combines the SEO and AI Visibility toolkits in a single subscription". It comes in Starter, Pro+ and Advanced plans. Other toolkits, such as Local and Content, are add-ons.

Ahrefs

Ahrefs sells one plan ladder: Lite, Standard, Advanced and Enterprise. Each step up adds history, tracked keywords, AI prompt checks and room for more users. Brand Radar, its AI search product, is priced on top.

Data: how big each database is, and why size is the wrong test

Both companies publish large numbers about their data. Here is what each one says about itself.

• Semrush: 28.8 billion keywords across 142 geographic databases, and over 43 trillion backlinks. Its crawler visits about 10 billion web pages a day.
• Ahrefs: keyword data for 217 locations, and 5 million pages crawled every minute, which is about 7.2 billion a day. Ahrefs calls its live backlink index the world's largest, refreshed every 15 to 30 minutes.

These figures do not line up, because each company counts keywords, pages and links its own way. Ahrefs says so itself: "each tool counts links in different ways", and the differences "make a fair link comparison nearly impossible to do." Freshness varies too: Semrush says its updates range from once a day to once a month.

A better test: your own site

Check each tool against data you already trust. Google Search Console is Google's free report on the searches and links that reach your site.

1. Open Semrush's free plan. It needs no credit card and gives you 10 reports a day.
2. Verify your site in Ahrefs Webmaster Tools. It is free for websites you own.
3. Compare both with Search Console. Look at the keywords and linking sites each tool finds for your domain.
4. Repeat for one competitor in your market. Pick the tool whose results look closest to what you know.

Features: free tools, seats, limits and add-ons

Both suites cover keyword research and backlink data, built on their own crawlers. The real differences sit in how each one packages, limits and prices that work.

Free options

• Semrush free plan: for trying the platform, with no credit card. It allows 10 reports a day across its main tools.
• Semrush trial: Semrush offers a seven-day free trial. The standalone AI Visibility Toolkit has no free trial.
• Ahrefs Webmaster Tools: free for websites you verify as yours. Its Site Audit checks for more than 170 common technical and on-page SEO issues, with 5,000 crawl credits per project each month.
• Ahrefs Starter: $29 a month for basic keyword and competitor research.

Seats and usage limits

Seats change the real price for any team of more than one person.

• Ahrefs seats: each main plan includes one user. Lite can add 2 more at $40 a month each, Standard 5 more at $60, and Advanced 10 more at $80.
• Ahrefs credits: Lite gives each user 1,000 credits, the unit Ahrefs uses to meter usage. Standard and Advanced give unlimited credits per user.
• Ahrefs history and rank tracking: Lite keeps 6 months of history and tracks 750 keywords. Standard keeps 2 years and tracks 2,000. Advanced keeps 5 years and tracks 5,000.
• Semrush seats: extra users start at $45 a month. The pricing page does not say how many users each plan includes, so confirm that before you buy.

Add-ons and extra toolkits

• Semrush: you can add toolkits, such as Local or Content, to a subscription at any time.
• Ahrefs: Brand Radar adds AI search research and tracking on top of the plans, from $50 a month.

Pricing: what Semrush and Ahrefs cost in 2026

Both price by plan in US dollars, with a discount for paying yearly. Here are both ladders, step by step.

Watch the names: both companies have a plan called Starter. Semrush Starter costs $199 a month, and Ahrefs Starter costs $29. For one user, Ahrefs Lite is $10 a month cheaper than Semrush's SEO plan on monthly billing. Higher up the ladder, the order flips: Semrush Pro+ costs $299 a month, while Ahrefs Advanced costs $449.

The plans also aim at different buyers. Semrush pitches its SEO plan at freelancers and small businesses, and Starter at "small teams and agencies growing across organic search and AI". Ahrefs pitches Advanced at "lean in-house marketing teams".

Seats change the sum. A team of three on Ahrefs Lite pays $129 plus two users at $40, which is $209 a month. On Semrush, extra users start at $45, so check how many seats your plan includes before you compare.

AI search tracking: Semrush One vs Ahrefs Brand Radar

AI search tracking means sending set questions, called prompts, to AI assistants and recording whether they mention or cite your brand. It measures GEO (generative engine optimization): the work of getting your brand cited in AI answers. Our GEO guide for B2B SaaS covers that work.

What Semrush offers

• Semrush One: one subscription for SEO and AI visibility, in Starter, Pro+ and Advanced plans. It shows how your brand appears in Google AI Overviews, AI Mode, ChatGPT, Gemini and Perplexity.
• AI Visibility Toolkit alone: $99 a month, with 25 prompts for tracking. It has no free trial.

What Ahrefs offers

• Prompt checks in each plan: 150 on Lite, 300 on Standard and 600 on Advanced.
• Brand Radar prompt tracking: from $50 a month. It tracks how AI answers the prompts you choose, refreshed daily.
• Brand Radar AI Visibility Index: from $199 a month. It maps AI visibility across 551 million real prompts, and reports citations: how often AI links to your pages as a source.

Which one tracks AI search better

Both name the same five engines. Ahrefs also names Microsoft Copilot, and Semrush's help page does not, so check Semrush's coverage if your buyers use Copilot.

The two also count differently. Semrush counts tracked prompts, while Ahrefs counts "checks on AI prompts", so ask each one how often a prompt is checked. For dedicated trackers beyond these two, see our list of the best AI visibility tools.

Before you pay for tracking, see what AI engines can read on your site. Our free AI visibility check runs 30 checks on that.

Semrush or Ahrefs: which should a SaaS team pick?

Match the tool to the job your team does most each week, not to the longest feature list.

Pick Semrush if

• You want SEO and AI search tracking in one subscription, from $199 a month.
• You expect to add local or content tools later, as toolkits on the same account.
• You want to try before you pay: there is a free plan and a seven-day trial.

Pick Ahrefs if

• You want the lower first plan: $129 a month for Lite.
• You need history built into the plan: 2 years on Standard and 5 years on Advanced.
• You want to research AI visibility across a large set of real prompts, including Copilot.

Start free if

You are still testing whether search works for you. Pair Semrush's free plan for research with Ahrefs Webmaster Tools for your own site, and pay once you hit their limits.

Either tool only measures. Rankings come from the work itself: our SEO for B2B SaaS guide covers the steps, and SaaS link building covers how to earn the links both tools count.

Mistakes to avoid when choosing between Semrush and Ahrefs

Most bad choices here come from comparing the wrong thing.

1. Choosing on database size. Each tool counts links its own way, so test both on your own site instead.
2. Pricing one seat for a team of three. Extra users cost $40 to $80 a month on Ahrefs and start at $45 on Semrush.
3. Buying Ahrefs Lite for heavy daily use. Lite gives each user 1,000 credits and keeps 6 months of history.
4. Buying AI tracking before you know your prompts. Start with a short list of questions your buyers ask AI, then add more.
5. Paying monthly for a tool you will keep. Yearly billing saves up to 17% on Ahrefs and takes Semrush's SEO plan from $139 to $117.33 a month.
6. Treating every number as live. Semrush says its updates range from once a day to once a month, so check the date on each report.

FAQs

Sources

1. SEO & AI Search Plans and Pricing, Semrush, checked 10 November 2026.
2. What is Semrush One?, Semrush Knowledge Base, checked 10 November 2026.
3. AI Visibility Toolkit: Boost Brand Visibility in AI Search, Semrush Knowledge Base, checked 10 November 2026.
4. Semrush Data & Metrics, Semrush Knowledge Base, checked 10 November 2026.
5. Plans & Pricing, Ahrefs, checked 10 November 2026.
6. Ahrefs Brand Radar: Study your brand's AI visibility, Ahrefs, checked 10 November 2026.
7. Ahrefs Webmaster Tools: Free SEO Tools to Grow Your Site, Ahrefs, checked 10 November 2026.
8. We're powered by seriously big data, Ahrefs, checked 10 November 2026.
9. You Can't Compare Backlink Counts in SEO Tools: Here's Why, Patrick Stox, Ahrefs, 13 March 2024, checked 10 November 2026.