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The Verdict
For most people typing this into Google, the honest answer is Semrush.
If you are doing SEO, Semrush does the whole job (keywords, backlinks, rank tracking, audits) from $139.95/month, and its .Trends add-on covers competitor traffic if you need it. SimilarWeb wins only when whole-of-traffic market intelligence is the actual job, and there its self-service tiers start at $125/month billed annually and the real value sits in quote-only enterprise plans.
Choose SimilarWeb if
- +Whole-of-traffic competitive intelligence
- +Market and industry benchmarking
- +Audience and app-store analysis
- +Sales, strategy and investor research
Choose Semrush if
- +Keyword research and rank tracking
- +Backlink analysis and link building
- +Technical site audits
- +All-in-one SEO for teams and agencies
Pricing
Which one costs more?
Both quote entry prices around $120 to $140 a month, but you are buying different things. Semrush's price gets you the full SEO suite; competitor traffic data is a separate $289/month .Trends add-on. SimilarWeb's entry tier is competitive intelligence itself, but its serious tiers are quote-only and run into five figures a year.
| Plan / Tier | SimilarWeb | Semrush | Notes |
|---|---|---|---|
| Entry | $125/mo (annual) Competitive Intelligence | $139.95/mo Pro ($117 annual) | SimilarWeb's entry IS competitive intel; Semrush Pro is the full SEO suite. |
| Mid | $399/mo adds SEO + AEO | $249.95/mo Guru | Different value: SimilarWeb adds search data; Semrush Guru adds historical data and content tools. |
| Traffic/market data | Included (core product) | +$289/mo .Trends add-on | Semrush charges extra for the traffic intelligence SimilarWeb is built around. |
| Free / trial | Free Chrome extension + 7-day trial | Free plan (10 queries/day) + 7-day trial | Semrush has a standing free plan; SimilarWeb only a free extension and lookups. |
Buddy's Take on Pricing
For SEO buyers Semrush is better value: the full suite for $139.95/month versus SimilarWeb's $125/month that does almost no hands-on SEO. If competitor traffic intelligence is your main need, compare SimilarWeb's core product against Semrush Pro plus the $289 .Trends add-on, and SimilarWeb usually wins on depth. That is why the pricing edge goes to Semrush for the typical searcher.
Features
Capability comparison
Line the tools up feature by feature and the split is stark: Semrush owns the SEO column, SimilarWeb owns the market and traffic column.
| Capability | SimilarWeb | Semrush |
|---|---|---|
| Keyword research | ○ | ★ |
| Backlink analysis | ○ | ★ |
| Rank tracking | ✗ | ★ |
| Site audit | ✗ | ★ |
| Competitor traffic estimates | ★ | ● |
| Market & industry benchmarking | ★ | ◐ |
| Audience demographics | ★ | ◐ |
| App intelligence | ★ | ✗ |
| Free plan | ◐ | ✓ |
| API & agent access | ★ | ● |
Semrush wins every core SEO row: keyword research, backlinks, rank tracking and site audits. That is what it is built for, and SimilarWeb barely competes there. SimilarWeb has no rank tracker at all, and its backlink data is shallow, so it is not a tool you would use to do SEO.
SimilarWeb wins the intelligence rows: whole-site traffic estimates across every channel, market and industry benchmarking, audience demographics and app-store data. Semrush reaches into this territory only through its .Trends add-on at $289 a month, and even then SimilarWeb is generally regarded as deeper and more accurate for traffic estimation, especially on larger sites.
One honest caveat on SimilarWeb: its numbers are modeled from a panel and clickstream data, so they are estimates, most reliable at scale and least reliable for small sites. Semrush's traffic estimates carry the same caveat. If you need exact numbers for your own site, both lose to your own analytics.
Who It's For
Who should choose which?
Choose SimilarWeb if you...
- +You need whole-site traffic estimates for competitors across all channels, not just search
- +You do market research, competitive intelligence or industry benchmarking
- +You want audience demographics and app-store intelligence
- +You are in sales, strategy or investing rather than hands-on SEO
Choose Semrush if you...
- +You do SEO: keyword research, backlinks, rank tracking and site audits
- +You want the widest all-in-one toolkit for one login
- +You want a real free plan and a 7-day trial before paying
- +You need competitor traffic only occasionally (add .Trends when you do)
Final recommendation
The bottom line
Pick Semrush if you are doing SEO, which is what most people comparing these two actually want. It does keywords, backlinks, rank tracking and audits in one place, and you can bolt on .Trends the odd month you need competitor traffic. Pick SimilarWeb if your real job is market and competitive intelligence: sizing competitors' total traffic, benchmarking an industry, or understanding an audience.
They are complementary more than competitive, and plenty of large teams run both.
FAQ
Frequently Asked Questions
For SEO, no. Semrush does keyword research, backlinks, rank tracking and audits that SimilarWeb largely does not. SimilarWeb is better for whole-of-traffic market and competitive intelligence, which Semrush only partly covers through its $289/month .Trends add-on.
Not for SEO work. SimilarWeb has no rank tracker and shallow backlink data, so it cannot run an SEO program. It complements an SEO suite rather than replacing one.
Semrush is better value for SEO: the full suite is $139.95/month versus SimilarWeb's $125/month (annual) that does little hands-on SEO. SimilarWeb's serious tiers are quote-only and run into five figures a year.
Yes, through its .Trends add-on at $289/month per seat. It covers competitor traffic, market share and audience data. SimilarWeb is generally deeper and more accurate for traffic estimation, but .Trends is convenient if you already use Semrush.
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 60+ tools in the marketing 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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