What is Similarweb?
Similarweb is a digital market intelligence platform that estimates website and app traffic so businesses can benchmark competitors, size markets and plan SEO and advertising. It is a publicly traded company listed on the New York Stock Exchange, with offices in Israel, the US, Europe, Latin America and Asia. Its main product, Web Intelligence, combines competitive research, an SEO suite, ad intelligence and a generative AI suite.
The AI side has grown quickly. Similarweb AI Traffic tools measure visits from chatbots such as ChatGPT, Perplexity, Claude and Gemini, and AI Search Intelligence tracks brand visibility, citations and sentiment in AI answers. Separate products cover app analytics, retail and Amazon data, sales prospecting and investor research, and data is also sold through an API and data feeds.
Similarweb at a glance
How does Similarweb work?
- Enter a site or market
Look up any domain, industry or keyword to see estimated traffic, sources and audience trends.
- Benchmark competitors
Compare traffic share, channels, keywords and ad activity across rival sites.
- Check AI traffic and visibility
See which chatbots send traffic and how often your brand is cited in AI answers.
- Act on the data
Use keyword, ad and landing page insights to plan SEO and paid campaigns, or export data via API.
- Scale up with enterprise options
Larger teams can add AI Studio for natural-language questions, custom data feeds, SSO and managed services.
Similarweb key features
Website traffic analysis
Estimates visits, engagement and traffic sources for any site, with up to 37 months of history.
Strategic SEO suite
Keyword research, organic competitor analysis and rank data inside Web Intelligence.
Ads intelligence
Shows competitors' display, video and search ad activity.
Similarweb AI Traffic
Tracks referral traffic from ChatGPT, Perplexity, Claude, Gemini, Grok and DeepSeek.
AI Search Intelligence
Monitors AI brand visibility, citations, sentiment and prompts, with optimization tips.
App and retail intelligence
Separate products for app usage, digital shelf and Amazon sales analytics.
API and data feeds
Explore API and data-as-a-service options for enterprise teams.
Free tools
A Website Traffic Checker, AI Traffic Checker, free app analytics, a keyword generator and the SERP Seismometer give a limited preview of the data without a subscription.
Why use Similarweb?
- Traffic estimates for any website make competitor benchmarking fast.
- AI traffic tracking shows how much chatbots contribute to visits.
- One platform covers SEO, ads and market research.
- Free tools give a quick look at any site's traffic before you buy.
- Enterprise data feeds support custom dashboards and analysis.
Who is Similarweb best for?
A good fit for
- Marketing and strategy teams benchmarking competitors
- Agencies preparing market and competitor research
- Ecommerce brands tracking market share
- Enterprises measuring AI search visibility
Less suited to
- Freelancers who mainly need rank tracking or site audits
- Small budgets, since most packages are custom-quoted
- Users who need exact traffic numbers rather than estimates
Similarweb pricing
| Pricing model | Subscription |
|---|---|
| Free plan | Yes |
| Free trial | Available; length not stated |
| Starting price | $125/month (Web Intelligence) |
Self-serve packages suit individuals and small teams, while business and enterprise packages are custom-quoted. Free tools show limited, high-level data, and annual billing is arranged through support.
Prices checked October 2026. Vendors change plans often, so confirm on the official Similarweb pricing page before you buy.
Similarweb pros and cons
Pros
- Wide competitor and market data coverage
- Dedicated AI traffic and AI visibility tools
- Free traffic checker for quick lookups
- Publicly listed company with long history data
Cons
- Most pricing requires talking to sales
- Traffic figures are estimates, not exact analytics
- Can be costly for small businesses
Similarweb integrations and platforms
Available on
Similarweb alternatives
See the full shortlist in Best SEO Tools.
Similarweb FAQ
Is Similarweb free?
Similarweb has free tools, including a Website Traffic Checker, an AI Traffic Checker and a keyword generator, but they show only a limited, high-level sample of data. Full access requires a paid package, with Web Intelligence starting at $125 a month. A free trial is also offered, and larger teams get custom quotes.
What is Similarweb used for?
Similarweb is used to estimate website traffic, benchmark competitors, research keywords and ads, and size online markets. Marketers also use Similarweb to see how much traffic comes from AI chatbots and how often their brand appears in AI answers. Other products cover apps, retail, sales leads and investment research.
How accurate is Similarweb?
Similarweb shows estimates built from its data sources and models, not the exact numbers you would see in your own analytics. The figures are most useful for comparing trends and relative performance between sites rather than precise visit counts. For your own site, your analytics tool remains the source of truth.
Similarweb vs Semrush: what's the difference?
Similarweb focuses on market and traffic intelligence, showing how sites, apps and industries perform and where traffic comes from, including AI chatbots. Semrush focuses on SEO execution, with deeper rank tracking, site audits and content tools. Many teams use Similarweb for strategy and Semrush for daily SEO work.
Does Similarweb track AI traffic?
Yes. Similarweb AI Traffic tools track visits referred by chatbots such as ChatGPT, Perplexity, Claude, Gemini, Grok and DeepSeek. Its AI Search Intelligence product goes further, measuring brand visibility, citations and sentiment in AI answers. A free AI Traffic Checker offers a basic view for any site.
Sources
This overview is based on Similarweb's official website and documentation, checked October 2026.