In-depth two-product comparison
Amplitude vs PostHog
In-depth comparison of Amplitude and PostHog for B2B SaaS companies. We analyze analytics depth, experimentation, feature flags, pricing, and real-world use cases.
Last updated: 2026-03-15. Verify current features, pricing, limits, and integrations on official vendor pages.
Short answer
Amplitude wins for enterprise-grade behavioral analytics, collaboration (Notebooks), and predictive cohorts. PostHog wins for developer teams wanting an all-in-one open-source suite with feature flags, session replay, and analytics at lower cost. Sequenzy integrates with both and adds SaaS-specific lifecycle email automation on top of your analytics data.
Amplitude
Enterprise behavioral analytics with collaboration and experimentation
PostHog
Open-source all-in-one product suite for developer-led teams
Quick comparison
| Decision area | Amplitude | PostHog | What to verify |
|---|---|---|---|
| Primary Strength | Enterprise behavioral analytics and predictions | All-in-one open-source product suite | Test this with representative data and the next realistic usage tier. |
| Open Source | No | Yes (MIT license) | Test this with representative data and the next realistic usage tier. |
| Feature Flags | Amplitude Experiment (separate product) | Built-in, tightly integrated | Test this with representative data and the next realistic usage tier. |
| Session Replay | Amplitude Session Replay (newer feature) | Mature session recording with event timeline | Test this with representative data and the next realistic usage tier. |
| Collaboration | Notebooks, team spaces, governance | Dashboards and sharing, less enterprise collaboration | Test this with representative data and the next realistic usage tier. |
| Predictive Analytics | Predictive cohorts with ML | Not available | Test this with representative data and the next realistic usage tier. |
| Starting Price | $49/mo (Plus plan) | Free, pay-as-you-go | Test this with representative data and the next realistic usage tier. |
| Billing Integration | Not native | Not native | Test this with representative data and the next realistic usage tier. |
Feature comparison
| Feature | Amplitude | PostHog |
|---|---|---|
| Behavioral cohorting | 9/10 Advanced cohorts with predictive capabilities and ML | 7/10 Cohort analysis with behavioral filters |
| Retention analysis | 9/10 Lifecycle retention with new/current/resurrected/dormant segmentation | 7/10 Retention tables with basic cohort analysis |
| Pathfinder / Journey | 9/10 Pathfinder for user journey discovery and visualization | 7/10 User paths and journey visualization |
| Custom queries | 8/10 Structured query builder with good flexibility | 8/10 HogQL (SQL-like) for custom analysis |
| Feature flags | 5/10 Amplitude Experiment includes feature flags, separate product | 9/10 Built-in feature flags with targeting, rollouts, and multivariate flags |
| Session replay | 5/10 Amplitude Session Replay available, newer capability | 9/10 Mature session recording with network tab, console, and event timeline |
| In-app surveys | 3/10 Not a core feature | 8/10 Built-in surveys with targeting and analytics |
| Self-hosting | 1/10 Not available | 10/10 Full self-hosting with Docker, Kubernetes |
| Email automation | 2/10 Not an email platform | 2/10 Not an email platform |
| Billing integration | 3/10 Track billing as events | 3/10 Track billing as events |
| Dunning | 1/10 Not available | 1/10 Not available |
Pricing and operating cost
Amplitude
Free plan: 50K MTUs/month
MTU pricing can be expensive at scale Experiment product priced separately CDP features separately priced
PostHog
Free plan: generous allocations per product
Self-hosting requires infrastructure and DevOps Multiple products can add up Enterprise features require paid plans
| Tier or usage case | Amplitude | PostHog |
|---|---|---|
| Free | $0/mo (50K MTUs) Core analytics, limited features | $0/mo (1M events, 5K sessions, etc.) All products available with free allocations |
| Growth | From $49/mo Advanced analytics, cohort comparison | Pay-as-you-go per product Volume discounts, all features |
| Enterprise | Custom pricing SSO, governance, dedicated support | Custom pricing SSO, advanced permissions, support |
Pros and cons
Amplitude
Pros
- Best-in-class behavioral cohorting with predictions
- Notebooks for team collaboration
- Enterprise governance and data quality
- Publicly traded stability
- Pathfinder for journey discovery
- Lifecycle retention analysis
Cons
- Higher starting price ($49/mo)
- MTU pricing expensive at scale
- Experiment is a separate product
- Not open source
- No self-hosting
- Not an email platform
PostHog
Pros
- All-in-one: analytics + flags + replay + testing + surveys
- Open source (MIT)
- Self-hosting option
- Developer-friendly HogQL
- Generous free tier across products
- Rapid feature development
Cons
- Analytics less deep than Amplitude
- No predictive cohorts
- Less enterprise collaboration
- Younger platform
- Smaller company
- Not an email platform
Who should choose what?
Large team needing collaborative analytics with governance.
Recommendation: Amplitude
Small team wanting one tool for analytics, flags, and replay.
Recommendation: PostHog
Need automated email from product behavior and billing events.
Recommendation: PostHog
Need to keep analytics data on your own infrastructure.
Recommendation: PostHog
Final verdict
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FAQ
Is PostHog a real alternative to Amplitude?
For core analytics, PostHog is solid but less mature for complex behavioral analysis and predictions. PostHog value proposition is the all-in-one suite that replaces Amplitude PLUS separate feature flag and session replay tools. For enterprise teams needing deep analytics, Amplitude remains stronger.
Can either handle SaaS lifecycle email?
No. Both are analytics platforms. Use Sequenzy for lifecycle email with native billing integration, connecting to either analytics platform via Segment.
Which has better experimentation?
Both offer experimentation. PostHog integrates A/B testing tightly with feature flags in one platform. Amplitude Experiment is a separate product that is more enterprise-oriented. For most teams, PostHog integrated approach is more convenient.
Related reading: B2B email marketing guide, alternatives hub, and B2B SaaS tool stack.