Semrush
SimilarwebChoose Semrush if…
You do SEO, content and PPC and want competitor traffic as part of that.
Choose Similarweb if…
You need market sizing, channel mix and audience data, for strategy, sales or investing.
Semrush vs Similarweb
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Quick verdict
Semrush is an SEO and marketing suite with traffic analytics. Similarweb is a market intelligence platform focused on total traffic, sources and audiences across all channels.
Side by side
| Semrush | Similarweb | |
|---|---|---|
| Our rating | 4.4/5 | 4.3/5 |
| Value | 3.9/5 | 3.6/5 |
| Features | 4.9/5 | 4.7/5 |
| Ease of use | 4.1/5 | 4.4/5 |
| Output quality | 4.7/5 | 4.5/5 |
| Category | SEO | SEO |
| Free plan | Limited free account (10 requests/day) | Limited free data; free trial |
| Cheapest paid plan (monthly) | $139/mo | $125/mo |
| Same plan billed yearly | $117.33/mo | - |
| Top plan | Advanced: $549/mo | Self-service: $125/mo |
| Seats | 1 user per plan; extra seats cost more | Package-based |
| Trial / refund | 7-day trial on some plans | Free trial |
| Platforms | Web, API | Web, browser extension |
| Best for | Marketers who want SEO, PPC and content research in one tool | Competitive research and market sizing beyond SEO |
Semrush: pros & cons
- Huge keyword and competitor database
- Covers SEO, ads, content and AI search
- Strong reporting
- Expensive, especially with extra seats
- Overwhelming for beginners
Similarweb: pros & cons
- Best for estimating any site’s traffic and sources
- Free extension for quick checks
- Covers apps, ads and audiences
- Self-service from $125/mo
- Serious use needs custom packages
Frequently asked questions
Which is cheaper?
Semrush starts at $139/mo; Similarweb self-service from $125/mo.
Which is more accurate?
Both are estimates; use them to compare trends, not exact numbers.
Questions from readers
Still deciding between these two? Ask a question and we will answer it here.