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The Verdict
For the typical searcher, Ahrefs is the answer: it is a focused, best-in-class SEO toolset with the strongest backlink data, from $129/month, plus a new $29 Starter and free Ahrefs Webmaster Tools.
SimilarWeb wins only when whole-of-traffic market intelligence is the job, and its self-service tiers start at $125/month billed annually with the real power gated behind quote-only enterprise plans. One friction point on Ahrefs worth knowing up front: it has no free trial.
Choose SimilarWeb if
- +Whole-of-traffic competitive intelligence
- +Market and industry benchmarking
- +Audience and app-store analysis
- +Strategy, sales and investor research
Choose Ahrefs if
- +Backlink analysis and link building
- +Keyword research with accurate difficulty
- +Rank tracking and site audits
- +Focused, best-in-class SEO
Ratings
What reviewers say
SimilarWeb holds a —/5 average rating across 0 reviews. Ahrefs holds a 4.6/5 average across 1,171 reviews. Both tools are rated similarly by users.
SimilarWebMarket Presence
Ecosystem comparison
| SimilarWeb | Ahrefs | |
|---|---|---|
| User reviews | 0 | 1,171 |
| Founded | 2007 | 2010 |
| HQ | IL | SG |
Pricing
Which one costs more?
Ahrefs and SimilarWeb both start around $125 to $129 a month, but for different things. Ahrefs gets you a real SEO toolset (and a $29 Starter, plus free Webmaster Tools). SimilarWeb's entry tier is competitive intelligence, with its serious capability behind quote-only enterprise pricing. Note Ahrefs has no free trial, and SimilarWeb only offers a 7-day one.
$199/mo
starting price
Watch out
No public pricing whatsoever - everything requires sales contact. The extensive list of add-ons suggests the base toolkit prices may not include many features businesses would consider essential, like historical data or multi-country coverage.
$29/mo
starting price
Watch out
Many features require usage credits that can be consumed quickly with heavy use, potentially triggering automatic pay-as-you-go charges. Export limits and API usage have separate consumption tracking beyond the base plan price.
| Plan / Tier | SimilarWeb | Ahrefs | Notes |
|---|---|---|---|
| Entry | $125/mo (annual) Competitive Intelligence | $129/mo Lite ($108 annual) + $29 Starter | Ahrefs also has a $29 Starter and free Webmaster Tools; SimilarWeb has neither. |
| Mid | $399/mo adds SEO + AEO | $249/mo Standard ($208 annual) | Different value: SimilarWeb adds search data; Ahrefs Standard adds seats, projects and history. |
| Top (self-serve) | $649/mo adds Ads | $449/mo Advanced ($374 annual) | Both scale up; SimilarWeb's real depth is in quote-only enterprise tiers. |
| Free / trial | Free extension + 7-day trial | Free Ahrefs Webmaster Tools, NO free trial | Ahrefs killed its $7 trial; AWT (free) is the way to test it. |
Buddy's Take on Pricing
For SEO buyers Ahrefs is far better value: a focused SEO toolset from $129/month (or $29 to dip a toe) versus SimilarWeb's $125/month that does little SEO. If your job is market and traffic intelligence, SimilarWeb earns its price, but its real capability sits in five-figure enterprise contracts. Pricing edge goes to Ahrefs for the typical searcher.
I break down every SimilarWeb tier, the API credits, and the trial fine print in the SimilarWeb pricing guide.
Looking for something cheaper?
These SEO Software start lower than both SimilarWeb and Ahrefs.
Features
Capability comparison
Feature by feature, this is two different tools: Ahrefs owns the SEO column, SimilarWeb owns the market and traffic column, and they barely touch in the middle.
| Capability | SimilarWeb | Ahrefs |
|---|---|---|
| Backlink analysis | ○ | ★ |
| Keyword research | ○ | ★ |
| Rank tracking | ✗ | ★ |
| Site audit | ✗ | ★ |
| Competitor traffic estimates | ★ | ○ |
| Market & industry benchmarking | ★ | ✗ |
| Audience demographics | ★ | ✗ |
| App intelligence | ★ | ✗ |
| Free option | ◐ | ✓ |
| API & agent access | ★ | ● |
Ahrefs wins every SEO row and it is not close. Its backlink index is the reason most SEOs pay for it, and its keyword research, rank tracking and site audit round out a focused, best-in-class toolset. SimilarWeb has no rank tracker and thin backlink data, so it simply does not do SEO.
SimilarWeb wins the intelligence rows outright. It estimates competitors' total traffic across direct, referral, social, paid, email and search, benchmarks whole industries, profiles audiences and tracks apps. Ahrefs shows organic-search traffic estimates only, so for whole-of-traffic market intelligence it is not in the running.
Two honest caveats. SimilarWeb's data is modeled and works best at scale, so treat small-site numbers with caution. And Ahrefs has no free trial, which surprises people: the way to try it is the free Ahrefs Webmaster Tools on a site you own, or the $29 Starter plan.
AI & Integrations
Which fits your stack better?
API access, automation connectors, and AI readiness. The tools that connect to your stack save you the most time.
| SimilarWeb | Ahrefs | |
|---|---|---|
| MCP ServerConnect to AI assistants (Claude, Cursor) | ✓ | ✓ |
| REST APIBuild custom integrations | ✓ | ✓ |
| ZapierNo-code automation | ✗ | ✗ |
| Make (Integromat)Advanced workflow builder | ✗ | ✗ |
| Security | ||
| SSO | ✓ | ✓ |
| 2FA | ✓ | ✓ |
| Ecosystem | ||
| Support | ||
Who It's For
Who should choose which?
Choose SimilarWeb if you...
- +You need competitors' total traffic across all channels, not just search
- +You do market research, competitive intelligence or benchmarking
- +You want audience demographics and app-store data
- +Your role is strategy, sales or investing more than hands-on SEO
Choose Ahrefs if you...
- +You do SEO and care most about backlinks and keyword research
- +You want the largest, most trusted backlink index
- +You want a low entry point ($29 Starter) or free Webmaster Tools
- +You are fine without a free trial
Final recommendation
The bottom line
Pick Ahrefs if you are doing SEO, which is what nearly everyone comparing these two wants. Its backlink and keyword data are best-in-class, and the $29 Starter plus free Webmaster Tools lower the entry barrier despite the missing free trial. Pick SimilarWeb if your job is market and competitive intelligence: total traffic, market share, audiences and apps.
These two are complements, not rivals, and large teams often run both.
FAQ
Frequently Asked Questions
For SEO, no. Ahrefs has best-in-class backlink and keyword data plus rank tracking and audits that SimilarWeb does not offer. SimilarWeb is better for whole-of-traffic market and competitive intelligence, which Ahrefs does not really cover.
No, not for SEO. SimilarWeb has no rank tracker and shallow backlink data, so it cannot run an SEO program. It complements an SEO tool rather than replacing one.
No. Ahrefs does not offer a free trial of its paid plans (it discontinued its old $7 trial). To test it, use the free Ahrefs Webmaster Tools on a site you own, or the $29/month Starter plan. SimilarWeb offers a 7-day trial.
Ahrefs is better value for SEO: a real toolset from $129/month (or $29 Starter) versus SimilarWeb's $125/month (annual) that does little SEO. SimilarWeb's serious tiers are quote-only and reach five figures a year.
More on these tools
Joonas Rotko
Author & founder of That Marketing Buddy
I score marketing software for AI-stack fit (MCP, API, agent-readiness), backed by 10+ years in digital marketing. This comparison is based on structured data from 61 tools in the SEO Software category.
This page may contain affiliate links. I earn a commission at no extra cost to you. This never influences the comparison.
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