PostHog
AmplitudePostHog vs Amplitude: Which Is Better for Product Event Analytics? (2026)
Quick Verdict
Choose PostHog if...
Best for engineering-led teams, open-source advocates, and any product that needs analytics + replay + flags + experiments without three separate vendors.
Choose Amplitude if...
Best for product-led companies past Series A with dedicated PMs or analysts, especially when event governance and polished reporting matter more than bundling.
If you're picking between PostHog and Amplitude for product event analytics, you've narrowed your choice to the two most credible options on the market — but they couldn't be more different in philosophy.
Amplitude has spent over a decade building the gold standard for behavioral analytics: pristine event taxonomies, deep cohort segmentation, and a query engine that PMs swear by. PostHog took the opposite approach — open-source, developer-first, and aggressively all-in-one. Where Amplitude assumes a dedicated analytics team will curate clean data, PostHog assumes engineers will instrument it themselves and ship features the same week.
After spending serious time in both platforms across early-stage and scale-stage products, here's the truth most comparison posts miss: the right tool depends less on feature count and more on who owns the data. If your PMs run analysis and your data team enforces governance, Amplitude's structured approach pays off. If your engineers ship analytics alongside features and you want session replay, feature flags, and experiments without buying three more SaaS contracts, PostHog wins on day one.
This guide walks through the four dimensions that actually decide the choice: event schema flexibility, funnel and retention depth, pricing at real-world volumes, and the self-hosted versus cloud trade-off. We pulled apart pricing tiers, tested funnel builders, and compared how each handles messy event data — so you can skip the marketing pages.
If you're still mapping the broader landscape, browse our full product analytics tools category for adjacent options like Mixpanel and Heap.
Feature Comparison
| Feature | PostHog | Amplitude |
|---|---|---|
| Product Analytics | ||
| Web Analytics | ||
| Session Replay | ||
| Feature Flags | ||
| A/B Testing & Experimentation | ||
| Surveys | ||
| Error Tracking | ||
| Data Warehouse | ||
| CDP (Customer Data Platform) | ||
| Autocapture | ||
| Feature Experimentation | ||
| Web Experimentation | ||
| Cohort Analysis | ||
| Behavioral Journeys | ||
| AI-Powered Insights | ||
| Heatmaps & Surveys |
Pricing Comparison
| Pricing | PostHog | Amplitude |
|---|---|---|
| Free Plan | ||
| Starting Price | /month | $00/month |
| Total Plans | 3 | 4 |
PostHog- 1M product analytics events
- 5K session replays
- 1M feature flag requests
- 250 survey responses
- No credit card required
- Community support
- Free tier included
- Product analytics from $50 per 1M events
- Session replay from $5 per 1K recordings
- Automatic volume discounts up to 82%
- Spending caps per product
- No per-seat fees
- Everything in Pay-as-you-go
- RBAC (role-based access control)
- Dedicated support and training
- SOC 2 Type II certification
- HIPAA readiness
- GDPR compliance
- SSO/SAML
Amplitude- 10K monthly tracked users
- 10M events
- Basic analytics
- Session replay
- Unlimited feature flags
- Up to 300K MTUs
- 25M events
- Behavioral cohorts
- Web experimentation
- Advanced charts
- Advanced behavioral analysis
- Feature experimentation
- Predictive audiences
- Custom event volumes
- Cross-product analysis
- Advanced permissions
- Multi-armed bandit experiments
- Assigned account manager
Detailed Review
PostHog is the open-source, developer-first answer to product analytics — and in 2026 it's become the default choice for engineering-led teams. Where Amplitude treats analytics as a discipline owned by a data or product team, PostHog treats it as something engineers should ship alongside features. That philosophy shows in every part of the product.
For event schemas, PostHog leans heavily on autocapture — every click, pageview, and form interaction is captured automatically without instrumentation. You can layer custom events on top, query everything via HogQL (a SQL dialect), and join event data with imported CRM or payment data in the built-in data warehouse. There's no rigid taxonomy to enforce, which is liberating for fast-moving teams and chaotic for those who need governance.
Funnel analysis, retention cohorts, and user paths are all here and capable. The funnel builder isn't quite as fluid as Amplitude's, but you can drop into HogQL when the UI hits its limit. The killer feature is bundling: session replay, feature flags, A/B testing, surveys, and error tracking all live in the same platform with shared user identity. You stop paying for FullStory, LaunchDarkly, and Hotjar separately.
The self-hosted option is what really sets it apart. If you're in a regulated industry or just want full data sovereignty, you can run PostHog on your own infrastructure with the same features as cloud — something Amplitude simply doesn't offer.
Pros
- All-in-one platform — analytics, session replay, feature flags, A/B testing, and surveys in one bill (no LaunchDarkly + FullStory + Mixpanel stack)
- Fully self-hostable for healthcare, finance, and EU teams that can't put user data in a third-party cloud
- Generous 1M event/month free tier with no credit card — covers most pre-seed and seed products entirely
- HogQL SQL access lets engineers run any analysis the UI doesn't support, without exporting to a warehouse
- Autocapture means you start getting useful data within minutes of installing, before you've defined a single custom event
- Open-source codebase — you can read it, fork it, and audit how your data is processed
Cons
- Steeper learning curve than Amplitude for non-technical PMs and marketers — the breadth of features is overwhelming at first
- Funnel and retention UIs are less polished than Amplitude's; expect to drop into HogQL for advanced analyses
- Session replay storage costs can climb fast at scale ($5 per 1K recordings beyond the 5K free tier)
Amplitude
AI-powered digital analytics for understanding user behavior and product optimization
Amplitude is the original behavioral analytics platform and still the gold standard when it comes to clean event taxonomies, polished funnels, and PM-friendly cohort analysis. If your team has a dedicated analyst or growth PM who lives in the analytics tool every day, Amplitude's interface and query speed pay for themselves.
Where Amplitude shines is structured event data. The platform is built around the assumption that you'll define a careful event taxonomy, govern it, and enforce naming consistency. Their Data product (formerly Iteratively) helps with this — you spec events in code before shipping, which prevents the schema drift PostHog tends to accumulate. For organizations with multiple engineering squads instrumenting events, this governance is a real advantage.
Funnel analysis, retention cohorts, and behavioral segmentation are best-in-class. Building a multi-step funnel with conditional properties, segmented by cohort, and broken out by acquisition source takes seconds — and the queries return fast even at scale. Cohort definitions are powerful: behavioral, predictive, and lookalike audiences are all native. Session replay and feature experimentation exist as add-ons, but they're newer and less integrated than PostHog's native bundling.
The trade-off is cloud-only and MTU-based pricing. You can't self-host, and costs scale with monthly tracked users, which means a viral product can hit budget surprises. The free tier (10K MTUs) is generous for early stage, but Plus at $49/month caps at 300K MTUs, and Growth tier pricing is custom and rarely cheap.
Pros
- Best-in-class funnel, retention, and cohort analysis with a UI built for daily PM use — no SQL required
- Strong governance tools (Amplitude Data) for enforcing event taxonomy across engineering teams
- Predictive audiences and behavioral cohorts are more sophisticated than PostHog's equivalents
- Fast query performance and intuitive UX — analysts can answer ad-hoc questions in seconds
- Mature, battle-tested platform with a deep ecosystem of integrations and partner tools
Cons
- Cloud-only — no self-hosted option, which is a non-starter for regulated industries or strict EU privacy requirements
- MTU-based pricing means viral or B2C growth can produce surprise renewal increases at Growth tier
- Session replay, feature flags, and experimentation are separate products — you'll either pay for add-ons or stack other vendors
- Data warehouse sync can lag 2+ hours, which complicates real-time workflows
Our Conclusion
Choose PostHog if: You're a product engineering team that wants analytics, session replay, feature flags, and A/B tests in one bill. You value open-source and want the option to self-host for compliance. You're early-stage and the 1M-event free tier covers you for months. You like SQL and don't mind a steeper learning curve in exchange for flexibility.
Choose Amplitude if: Your PMs and growth team — not engineers — drive analysis. You need polished cohort and retention reports out of the box. You care about data governance and want a curated taxonomy enforced across the org. You have the budget for Plus or Growth and won't outgrow the MTU model.
The honest middle ground: For most seed-to-Series-A startups in 2026, PostHog is the pragmatic pick — generous free tier, every feature in one place, and pricing that doesn't punish you for growing. Amplitude becomes the better fit once you've crossed Series B, hired a data team, and need governance and predictive features that justify a five-figure annual contract.
Next step: Both have meaningful free tiers, so don't pick on paper. Spin up both, instrument the same three core events (signup, activation, key conversion), and build a funnel in each. You'll know within an hour which mental model fits your team.
For adjacent decisions, see our guide on the best product analytics tools or compare against open-source alternatives in web analytics.
Frequently Asked Questions
Is PostHog really free, or does the free tier run out fast?
PostHog's free tier covers 1M product analytics events and 5K session replays per month with no credit card required — genuinely usable for most early-stage products. You only start paying when you cross those limits, and pricing is usage-based with automatic volume discounts up to 82%.
Can I self-host Amplitude like I can with PostHog?
No. Amplitude is cloud-only. PostHog is the only major product analytics platform with a fully supported self-hosted option, which is why teams in regulated industries (healthcare, finance, EU privacy-strict) often default to PostHog regardless of feature preference.
Which has better funnel and retention analysis?
Amplitude wins on out-of-the-box polish — funnel and retention reports are faster to build and easier for non-technical PMs. PostHog's funnels are functionally equivalent and more flexible via HogQL, but require more configuration. If your PMs build reports daily, Amplitude saves time.
How does pricing actually compare at 5M events per month?
PostHog at 5M events is roughly $200/month on pay-as-you-go (after the free 1M). Amplitude doesn't price by events — it prices by Monthly Tracked Users, so cost depends on your unique user count. At 50K-100K MTUs, expect Amplitude Plus at $49-$200+/month, with Growth tier (custom pricing) typically starting around $1-2K/month for serious volume.
Does PostHog actually replace session replay tools like FullStory?
Yes for most use cases. PostHog session replay is solid — masking, console logs, network requests, and integration with errors and feature flags. It's not as polished as FullStory's UX, but you get it bundled with analytics for free up to 5K replays/month, which is the real value.
Which is better for A/B testing?
PostHog has feature flags and experimentation natively integrated, so you can flag a feature, target a cohort, and measure impact in one platform. Amplitude has Experiment as a separate add-on. For teams running frequent experiments alongside analytics, PostHog's bundling is a significant advantage.