Similarweb vs Unlighthouse
Which one do AI engines recommend, and how do they differ on price, fit and features?
The short answer
Similarweb is the stronger AI pick in SEO Tools: it has a visibility score of 2.4 versus 0 for Unlighthouse.
Choose Similarweb if…
- You want the brand AI engines rank higher (2.4 vs 0)
- You need ISO/IEC 27001:2022 or SOC 2 Type 2 or SOC 3 coverage
- competitive web traffic analysis and market intelligence
- cross-domain traffic sourcing and market share benchmarking
Choose Unlighthouse if…
No clear advantage in the published data.
AI visibility side by side
Latest weekly run · Nov 2
| Metric | Similarweb | Unlighthouse |
|---|---|---|
| Visibility score | 2.4% | 0% |
| Change vs last week | New | New |
| Rank in SEO Tools | #22 | #55 |
| Share of voice | 0.9% | 0% |
| Mentions this run | 5 | 0 |
| Positive in AI answers | 0% | — |
The stronger value in each row is marked with a ✓.
Visibility score trend
Weekly runs over the last 60 days
Similarweb 0pp · Unlighthouse 0pp over 0 weekly runs.
Engine by engine
Similarweb leads on 2 of 3 engines
Head to head in AI answers
0 engine answers name both brands
Features, pricing & fit
| Dimension | Similarweb | Unlighthouse |
|---|---|---|
| Pricing model | Flat tiers | — |
| Entry price | Contact sales | — |
| Free plan | No | — |
| Deployment | — | Runs locally on the user's own computer; results are shown in a local server on localhost:5678. |
| Compliance | ISO/IEC 27001:2022, SOC 2 Type 2, SOC 3 | — |
| Support | Email support (support@similarweb.com), Dedicated enterprise support, Sales chat | — |
| Founded | 2009 | — |
| Headquarters | New York, NY, United States | — |
| Employees | 1,001–5,000 | — |
| Funding | IPO (NYSE) · $240M raised | — |
| Best for | Marketers, researchers, and SEO and PPC teams | Teams that need full-site Lighthouse audits, such as pre-launch checks and ongoing monitoring. |
Plans side by side
Unlighthouse
Pricing not available.
Pros and cons
Themes from the AI answers that mention each brand
Similarweb
- competitive web traffic analysis and market intelligence
- cross-domain traffic sourcing and market share benchmarking
- competitor benchmarking and market research
- free trial and limited free version
- not suited to precise first-party conversion measurement
- ranked behind Google Analytics and Amplitude in one comparison
Unlighthouse
Profile in progress.
Data collected ·ChatGPT, Perplexity, Google AI Mode·coverage 100%·next run
Cite as: SlateIndex, “Similarweb vs Unlighthouse”, https://slateindex.ai/compare/similarweb-vs-unlighthouse, data of Nov 2, 2026. Licence: CC BY 4.0.