Amplitude vs PostHog — Product Analytics for the Rich vs the Rest
Amplitude is the enterprise-grade luxury sedan; PostHog is the open-source hatchback you can mod yourself. Pick based on budget and control.
PostHog
PostHog’s open-source model and transparent pricing win for startups and devs who hate vendor lock-in. You get 90% of Amplitude’s features at 10% of the cost, with full data ownership.
The Framing: Enterprise Analytics vs Developer-First Agility
Amplitude and PostHog both track user behavior, but they approach it like a corporate boardroom vs a hacker garage. Amplitude is the incumbent, built for product managers at Fortune 500 companies who need polished dashboards and executive buy-in. PostHog emerged from Y Combinator with a developer-first ethos: open-source, self-hostable, and obsessed with transparency. If Amplitude is Salesforce, PostHog is the scrappy upstart that lets you peek under the hood—and modify the engine.
Where PostHog Wins
PostHog’s killer feature is ownership. Its open-source core means you can self-host for free (unlimited events) or use their cloud with a generous free tier (1 million events/month). Pricing scales transparently: $0 for up to 1 million events, then $0.00045/event. Compare that to Amplitude’s starter plan at $49/month for 10 million events, with enterprise plans requiring sales calls and often hitting $50k+/year. PostHog also bundles session recording, feature flags, and A/B testing into one platform—no extra fees. For startups, this is a no-brainer: you get Amplitude-like analytics without the opaque enterprise pricing.
Where Amplitude Holds Its Own
Amplitude still dominates in enterprise-grade polish and support. Its Behavioral Cohorting and Predictive Analytics (e.g., churn forecasting) are more mature, with better UI for non-technical users. Large companies value its SOC 2 compliance, dedicated CSMs, and integrations with tools like Salesforce and Marketo. If you’re a product team at a bank or publicly traded company, Amplitude’s $50k/year enterprise plan buys peace of mind—and a vendor that won’t disappear tomorrow. It’s the safe choice for orgs where ‘open-source’ is a red flag for legal.
The Gotcha: Switching Costs and Data Lock-In
Once you’re on Amplitude, leaving is painful. Historical data export is clunky, often requiring CSV dumps or paid professional services. PostHog, being open-source, lets you export everything via API or even migrate to a competitor easily. But PostHog’s gotcha is scaling complexity: self-hosting requires DevOps effort (think Kubernetes clusters), and its UI, while improving, still feels rougher than Amplitude’s slick dashboards. Most comparisons miss that Amplitude’s ease-of-use comes at the cost of flexibility—you’re renting a condo, not owning land.
If You’re Starting Today...
Choose PostHog if you’re a startup, indie hacker, or dev team with under $100k in funding. Use their free cloud tier, then self-host when you hit scale. You’ll save thousands and keep control. Choose Amplitude only if you’re a funded Series B+ company with a dedicated product ops team and a budget for ‘enterprise-grade’ tools. For everyone else, PostHog’s $0 entry price and bundled features (session replays! A/B tests!) make it the default pick. Don’t overthink this—start with PostHog, and migrate later if you outgrow it.
What Most Comparisons Get Wrong
Most reviews treat these as equals, but they’re not. Amplitude’s ‘free tier’ is a trap—it caps at 10 million events/month, then forces you onto a paid plan with opaque pricing. PostHog’s free tier is truly free forever for up to 1 million events, with clear pay-as-you-go after. Also, PostHog’s feature flags are built-in, while Amplitude charges extra for Experiment (its A/B testing tool). The real divide isn’t features—it’s philosophy: Amplitude sells to VPs, PostHog builds for engineers.
Quick Comparison
| Factor | Amplitude | PostHog |
|---|---|---|
| Pricing Transparency | Opaque; enterprise plans require sales calls | Clear: $0 for 1M events, then $0.00045/event |
| Open-Source / Self-Hostable | No | Yes (MIT license) |
| Built-in A/B Testing | Extra paid add-on (Amplitude Experiment) | Included in all plans |
| Enterprise Features (e.g., Predictive Analytics) | Strong (churn forecasting, advanced cohorts) | Limited (basic cohorts only) |
| Free Tier Limits | 10M events/month, then paid | 1M events/month forever |
| Session Recording | Extra paid add-on | Included in all plans |
| Data Export Ease | Clunky (CSV dumps, paid services) | Easy (API, self-hosted control) |
| UI/UX Polish | Excellent (drag-and-drop dashboards) | Good but rougher edges |
The Verdict
Use Amplitude if: You’re a large enterprise (500+ employees) with a $50k+ analytics budget and need SOC 2 compliance and hand-holding.
Use PostHog if: You’re a startup, indie dev, or tech team that values data ownership, transparency, and wants to avoid vendor lock-in.
Consider: Mixpanel if you want a middle ground—better UI than PostHog but more affordable than Amplitude, though its pricing is still opaque.
PostHog’s open-source model and transparent pricing win for startups and devs who hate vendor lock-in. You get 90% of Amplitude’s features at 10% of the cost, with full data ownership.
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