This comparison was auto-drafted from tool data and is being progressively edited. Last reviewed 2026-07-16.
PostHog vs Amplitude: The Side-by-Side Breakdown
PostHog and Amplitude both answer the questions Google Analytics cannot, tracking events, funnels, retention, and the behavioral cohorts that actually drive product decisions. The difference is philosophy. Amplitude is a deep, mature analytics suite with serious governance and taxonomy tooling aimed at established product teams, while PostHog bundles analytics with session replay, feature flags, experiments, and surveys into one open-source, aggressively priced platform. So the choice is depth-and-governance versus breadth-and-ownership. Here is where each pulls ahead.
PostHog
View detailsThe open-source product analytics platform that grew teeth, bundling analytics, session replay, feature flags, A/B testing, and surveys on one event graph. You instrument once and everything runs off the same data.
Key Features
- Product analytics with funnels, paths, and retention
- Session recording and replay
- Feature flags with multivariate support
- A/B testing and experimentation
- User surveys and feedback collection
- Self-hostable open source version
Pros
- + Replaces multiple tools: analytics, flags, recordings, surveys
- + Generous free tier with 1M events per month
- + Open source with self-hosting option
- + Great developer experience with SDKs for all platforms
- + EU-hosted cloud option for GDPR compliance
Cons
- - Can be resource-intensive when self-hosted
- - UI can feel overwhelming with so many features
- - Session recordings add up in storage quickly
- - Learning curve to set up all features properly
Amplitude
View detailsThe analytics platform you reach for when pageview counts stop being useful, built around event tracking, user journeys, and behavioral cohorts. Experimentation, session replay, and a CDP now sit on the same event graph.
Key Features
- Behavioral product analytics on events
- Pathfinder, compass, and impact analysis
- Predictive cohorts and segmentation
- Built-in A/B experimentation
- Tracking plan and data governance tools
- Native CDP and warehouse integrations
Pros
- + Powerful analytics suite for mature product teams
- + Strong governance and taxonomy tooling
- + Free tier is generous for early-stage usage
Cons
- - Steep learning curve for new analysts
- - Paid tiers are priced for larger organizations
The Verdict
Pick PostHog if you want one tool instead of five, since analytics, session replay, feature flags, A/B tests, and surveys all live on the same event graph, and the open-source self-hosting option plus a 1M-events free tier make it the budget-friendly default for startups. Pick Amplitude if analytics depth and data governance are the priority, because its taxonomy tooling, predictive cohorts, and impact analysis are built for mature product orgs that need rigor at scale. The tradeoffs are real on both sides. PostHog's breadth means a busy UI and a learning curve to set everything up, while Amplitude is priced for larger organizations and has a steep curve for new analysts. Both offer a genuinely usable free tier, so early-stage teams can start on either at no cost. If you can only run one, PostHog wins for lean teams that value owning the whole stack, and Amplitude wins when deep, governed analytics is the job and budget is not the blocker.
Choose PostHog if:
Startups and product teams that want analytics, replay, flags, experiments, and surveys in one open-source, budget-friendly platform.
Choose Amplitude if:
Mature product and growth orgs that need deep behavioral analytics with strong governance and taxonomy tooling.