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Side-by-Side Comparison

AmplitudevsPostHog

Amplitude gives you a polished, enterprise-ready analytics platform with built-in A/B testing and retention prediction—but you'll hit the 50K MTU paywall fast and face a steeper learning curve. PostHog trades UI polish for an all-in-one stack (analytics, feature flags, A/B tests) plus a 1M-event free tier and the flexibility to self-host, though you'll own the infrastructure burden.

Product A

Amplitude

by Amplitude Inc.

Digital analytics platform for product teams that want behavioral analytics and experimentation.

Free tier
Visit Amplitude
Product B

PostHog

by PostHog Inc.

Open-source product analytics with feature flags, session replay, and A/B tests — self-hostable.

Free tier
Visit PostHog

Side-by-Side Comparison

FeatureAmplitudePostHog
Price
FreeBetter
Free
Free TierYesYes
Top ProsBuilt-in A/B testing alongside analyticsAll-in-one: analytics + feature flags + session replay + A/B
Compass identifies which actions predict retentionOpen-source and self-hostable
Data governance and compliance features for enterpriseMost generous free tier in the category (1M events)
Top ConsFree tier limited to 50K MTUsUI less polished than Amplitude or Mixpanel
Steeper learning curve than Mixpanel for new analystsSelf-hosting requires infrastructure management

Features Compared

Both Amplitude and PostHog deliver core product analytics capabilities, but they differ significantly in scope and approach. Amplitude excels as a specialized behavioral analytics engine paired with A/B experimentation. Its standout feature is Compass, which identifies which user actions predict retention—a powerful tool for teams focused on understanding what drives long-term engagement. Amplitude also emphasizes data governance and compliance features built for enterprise environments, making it the stronger choice for organizations managing sensitive customer data across regulated industries. Session replay rounds out its offering, giving teams visibility into user behavior at the session level.

PostHog takes a broader, all-in-one approach by bundling event analytics, session replay, feature flags, A/B testing, and surveys into a single product. This integrated stack eliminates tool-switching for teams building features from hypothesis to deployment. Where Amplitude focuses depth on behavioral insights and experimentation, PostHog prioritizes breadth and developer accessibility. The critical differentiator is PostHog's open-source, self-hostable architecture—teams can run the entire platform on their own infrastructure with no vendor lock-in. However, PostHog's UI is acknowledged as less polished than Amplitude's, and some enterprise features remain in earlier maturity stages compared to Amplitude's established, battle-tested platform.

Pricing & Value

Pricing models reflect each product's positioning. Amplitude offers a free tier capped at 50K monthly tracked users (MTUs), suitable for startups and small projects, but teams quickly outgrow it. PostHog's free tier is notably more generous—1M events per month—giving much longer runway before paid upgrade becomes necessary. Both products offer free-tier access, but PostHog's threshold is roughly 20× higher, dramatically shifting the cost-to-value equation for lean teams. At scale, Amplitude's enterprise pricing becomes steep, reflecting its premium positioning in the behavioral analytics market. PostHog's self-hosting option provides an alternative path to cost control at volume, though it trades vendor management for infrastructure management.

  • Amplitude: 50K MTU free tier; enterprise pricing scales with usage; best ROI for teams prioritizing advanced analytics and compliance over cost
  • PostHog: 1M events/month free tier; open-source self-hosting eliminates per-seat or usage-based costs; best ROI for cost-sensitive teams and those with DevOps capacity
  • PostHog's free tier supports roughly 20× more event volume than Amplitude's, significantly extending the runway before paid plans are needed
  • Amplitude's pricing assumes you're willing to invest in premium features; PostHog assumes you may want to self-host to avoid scaling costs

Ease of Use & Onboarding

Amplitude is designed for product analysts and data-driven teams; its interface is polished and feature-rich, but new users often report a steeper learning curve. Setup and initial exploration require time investment. PostHog prioritizes developer-friendly workflows and includes a less polished but more intuitive UI for technical users. Teams with strong engineering cultures and DevOps experience will find PostHog's self-hosting setup natural; teams without that infrastructure expertise may find it a burden. For non-technical product managers, Amplitude's established workflows and clearer documentation provide a gentler entry point, even if it takes longer to master advanced capabilities.

Integration & Ecosystem

Amplitude integrates deeply with third-party analytics, marketing automation, and data warehouse tools—standard for a mature platform in its category. PostHog, as an open-source product, benefits from a developer-centric ecosystem and can be self-hosted within existing infrastructure, reducing dependency on external integrations for data collection. However, PostHog's ecosystem is younger and less established than Amplitude's. Teams already invested in Amplitude's integrations (data warehouses, marketing platforms, BI tools) will face switching costs. Teams building on a modern stack with event-driven architecture may find PostHog's approach more natural, especially if they want to avoid sending data to third-party servers.

Who Should Choose Amplitude?

Amplitude is the right choice for product teams at mid-market and enterprise companies that prioritize advanced behavioral insights and compliance. Choose Amplitude if your team includes dedicated analysts who will spend significant time exploring user cohorts, building funnels, and running A/B tests; if you operate in regulated industries requiring robust data governance; or if identifying retention drivers (via Compass) is central to your roadmap. Teams with budgets to invest in premium tooling and those running complex experimentation programs will see strong ROI. Early-stage startups with tight budgets should only commit after confirming they've outgrown PostHog's free tier.

Who Should Choose PostHog?

PostHog is ideal for engineering-driven teams, open-source-first companies, and organizations seeking to minimize per-user costs at scale. Choose PostHog if your team values owning its analytics infrastructure, wants to avoid vendor lock-in, or needs feature flags and A/B testing tightly integrated with the rest of your stack. Early-stage startups will appreciate the 1M-event free tier—a significant runway advantage. Teams with DevOps or platform engineering capacity should seriously consider self-hosting; the operational overhead pays dividends as event volume grows. PostHog also suits companies uncomfortable with third-party data handling or those already committed to open-source tooling throughout their stack.

Choose Amplitude if you…
  • Want: built-in a/b testing alongside analytics
  • Want: compass identifies which actions predict retention
  • Want: data governance and compliance features for enterprise
Try Amplitude
Choose PostHog if you…
  • Want: all-in-one: analytics + feature flags + session replay + a/b
  • Want: open-source and self-hostable
  • Want: most generous free tier in the category (1m events)
Try PostHog

Our Verdict

Pick Amplitude if you're a mid-market growth team that runs frequent experiments and needs Compass's retention-predictive features without managing your own servers. Pick PostHog if you want to avoid vendor lock-in, need feature flags alongside analytics, or operate at scale where self-hosting infrastructure costs less than Amplitude's per-MTU pricing.