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PostHog vs Semrush

A side-by-side look at PostHog and Semrush: what each costs to start, whether there is a free plan, how easy they are to pick up, and which features and integrations they cover.

Which should you choose?

Choose PostHog if

  • Startups and product teams that want one tool for analytics, replay and flags
  • Engineering-led companies comfortable with events and SQL
  • Teams needing EU data hosting for product analytics

Choose Semrush if

  • Agencies running SEO and PPC for multiple clients
  • In-house marketing teams that need competitor intelligence
  • Content teams that want research and optimization in one suite

Cheapest to start

Not comparable

Free plan

PostHog, Semrush

Highest editor rating

Semrush · 4.7

Comparison of PostHog and Semrush
ComparePostHog
Free planYes
Free trialNo
Starting pricePay as you go
Editor rating4.5
Ease of useModerate (3/5)
CategoryAnalytics
Pricing modelFree monthly allowance (approximately 1M events, 5,000 recordings and 1M flag requests), then usage-based per-product pricing with volume discounts; Teams add-on approximately $450 per month; Enterprise custom.
Plans
  • Free Free
  • Pay-as-you-go Custom
  • Teams add-on $450/mo
  • Enterprise Custom
PlatformsWeb, API
IntegrationsHubSpot, Intercom, Salesforce, Slack, Stripe, Zapier
Best for
  • Startups and product teams that want one tool for analytics, replay and flags
  • Engineering-led companies comfortable with events and SQL
  • Teams needing EU data hosting for product analytics
Pros
  • Analytics, session replay, feature flags, experiments and surveys share one event stream
  • Generous free monthly allowance covers many small products entirely
  • Open source with US and EU cloud hosting
  • Transparent per-unit pricing with volume discounts
  • SDKs for web, mobile and most backend languages
Cons
  • Requires developer setup and instrumentation to get value
  • Usage-based costs can grow quickly with high-traffic sites
  • Breadth of features makes the interface dense for newcomers
  • Self-hosted hobby deployment is unsupported beyond small volumes
A/B testingYes
AI assistantNo
API accessYes
Backlink analysisNo
Browser extensionNo
Competitor analysisNo
Content optimizationNo
Custom event trackingYes
Feature flagsYes
Forms & surveysYes
FunnelsYes
GDPR compliance toolsYes
HeatmapsYes
Keyword researchNo
Mobile appNo
Rank trackingNo
Reporting & dashboardsYes
Self-hosting optionYes
Session replayYes
Site auditNo
WebhooksYes
White-label / custom brandingNo

Common questions

Does PostHog or Semrush have a free plan?
Both do. PostHog and Semrush each offer a free tier, so you can try either without paying.
How long is the PostHog and Semrush free trial?
Semrush offers a 7-day free trial. PostHog does not offer one.

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