PostHogYour product's context layer.
vs
SimilarwebAI-powered digital data intelligence for market, competitive and consumer insights.
Comparison · Web Analytics · weekly run Nov 2
PostHog vs Similarweb
Which one do AI engines recommend, and how do they differ on price, fit and features?
The short answer
PostHog is the stronger AI pick in Web Analytics: it has a visibility score of 21 versus 7.2 for Similarweb, and ranks ahead in 100% of the answers that name both.
Choose PostHog if…
- You want the brand AI engines rank higher (21 vs 7.2)
- You want a free plan to start
- AI answers describe it more positively (57% vs 0% positive)
- You need a self-hosted or on-premises option
Choose Similarweb if…
- You need ISO/IEC 27001:2022 or SOC 3 coverage
- You prefer a larger, established vendor (1,001–5,000 employees)
- Flat tiers pricing suits your budget better than usage-based
- competitive web traffic analysis and market intelligence
AI visibility side by side
Latest weekly run · Nov 2
| Metric | PostHog | Similarweb |
|---|---|---|
| Visibility score | 21% | 7.2% |
| Change vs last week | New | New |
| Rank in Web Analytics | #7 | #12 |
| Share of voice | 6.1% | 2.5% |
| Mentions this run | 32 | 13 |
| Positive in AI answers | 57% | 0% |
The stronger value in each row is marked with a ✓.
Visibility score trend
Weekly runs over the last 60 days
PostHog 0pp · Similarweb 0pp over 0 weekly runs.
Engine by engine
PostHog leads on 3 of 3 engines
ChatGPT
AI Mode
Perplexity
PostHogSimilarweb
Head to head in AI answers
4 engine answers name both brands
4PostHog ranked higher
0Similarweb ranked higher
| Prompt | Engine | PostHog | Similarweb |
|---|---|---|---|
| How do I choose a web analytics tool for a mid-market team? | Perplexity | #5 | #9 |
| What are the best Web Analytics tools in 2026? | Perplexity | #6 | #11 |
| Compare the leading Web Analytics platforms | Perplexity | #11 | #12 |
| Official website of the top web analytics tool vendors | Perplexity | #13 | #14 |
Features, pricing & fit
| Dimension | PostHog | Similarweb |
|---|---|---|
| Pricing model | Usage-based | Flat tiers |
| Entry price | Contact sales | Contact sales |
| Free plan | Yes | No |
| Deployment | PostHog Cloud in US or EU regions, or self-hosted | — |
| Integrations | 926+ | — |
| Compliance | SOC 2 Type 2, GDPR, HIPAA | ISO/IEC 27001:2022, SOC 2 Type 2, SOC 3 |
| Support | Community support on the free plan, Email support on pay-as-you-go, Slack support for plans over $2k/mo, Paid onboarding call | Email support (support@similarweb.com), Dedicated enterprise support, Sales chat |
| Founded | 2020 | 2009 |
| Headquarters | San Francisco, CA, United States | New York, NY, United States |
| Employees | 201–500 | 1,001–5,000 |
| Funding | Series E | IPO (NYSE) · $240M raised |
| Best for | Product engineers, product managers, growth engineers and founders who want analytics, session replay, flags and experiments in one platform. | Marketers, researchers, and SEO and PPC teams |
Plans side by side
Pros and cons
Themes from the AI answers that mention each brand
PostHog
- Open-source, developer-first platform
- All-in-one bundle of analytics, session replay, feature flags and A/B testing
- Transparent, public pay-as-you-go pricing
- Generous free tier for small teams
- Strong adoption and best value for startups
- Pricing often requires sales-assisted quotes
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
Data collected ·ChatGPT, Perplexity, Google AI Mode·coverage 100%·next run
Cite as: SlateIndex, “PostHog vs Similarweb”, https://slateindex.ai/compare/posthog-vs-similarweb, data of Nov 2, 2026. Licence: CC BY 4.0.